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aro ® automatic machining tools problem solvers working for you

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for accuracy and performance at the cutting edge aro automatic machining to olsaretheanswertotoday s needsandtomorrow s unforeseen challenges.

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table of contents numerical model index 2 tool selection 4 aro automatic machining tools 5 electric/pneumatic self-feed drills 6-11 series 34a electra-feed 3/8 9.5 mm capacity 7 series 54c 74b electra-feed 1/2 12.7 mm capacity 8-9 series 34a 54c 74b spindle accessories 10-11 pneumatic self-feed drills 12-19 bant-a-matic series 3/16 4.8 mm capacity 12-13 par-a-matic series 5/16 7.9 mm capacity 12-13 super par-a-matic series 1/2 12.7 mm capacity 12-13 twin drills 1/8 to 3/8 3.2 to 9.5 mm capacity 14-15 offset drills 3/16 4.8 mm capacity 16 peck-feed drills 5/16 7.9 mm capacity 17 high-thrust 8670 series 5/8 15.9 mm capacity 18-19 pneumatic-self feed lead screw tappers 20-23 bant-a-matic series no 0 to 1/4 m1.6 to m6 capacity 20-21 par-a-matic series no 0 to 1/2 m1.6 to m12 capacity 20-21 2200 series lead screw no 0 to 1/2 m1.6 to m12 capacity 22-23 spindle accessories 24-28 drill chucks taper adapters tap chucks 24 collets 25 twin drill head attachments 26-27 twin drill collets 28 control accessories 29-38 mounting accessories 39-49 cad drawings 50 tool dimensional data 51-61 service kits 62 notes 64 contact information 65 1

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numerical model index model fe034a a-a fe054c a fe074b a 8245-b8 8245-b30 8245-b45 8245-101 8245-203 8246-d5-2 8246-d8-2 8248-b8 8248-b30 8248-b45 8255-a5 8255-a8 8255-a14 8255-a21 8255-a28 8255-a50 8255-101 8255-172 8256-c5-2 8256-c8-2 8256-c14-2 8257-a5-2 8257-a8-2 8257-a14-2 8258-c5 8258-c8 8258-c14 8258-c21 8258-c28 8258-c50 8265-3 8265-6 8265-12 8265-25 8265-46 8265-101 8265-171 8266-a7 8266-a12 8266-a17 8266-a23 8268-a3 8268-a6 2 description page series 34 electra-feed drill 7 series 54 electra-feed drill 8 series 74 electra-feed drill 9 bant-a-matic valve-in-head drill 12 bant-a-matic valve-in-head drill 12 bant-a-matic valve-in-head drill 12 bant-a-matic valve-in-head drill 12 bant-a-matic valve-in-head drill 12 bant-a-matic clutch-type tapper 20 bant-a-matic clutch-type tapper 20 bant-a-matic twin drill 14 bant-a-matic twin drill 14 bant-a-matic twin drill 14 par-a-matic valve-in-head drill 12 par-a-matic valve-in-head drill 12 par-a-matic valve-in-head drill 12 par-a-matic valve-in-head drill 12 par-a-matic valve-in-head drill 12 par-a-matic valve-in-head drill 12 par-a-matic valve-in-head drill 12 par-a-matic valve-in-head drill 12 par-a-matic clutch-type tapper 20 par-a-matic clutch-type tapper 20 par-a-matic clutch-type tapper 20 par-a-matic jaw-type tapper 20 par-a-matic jaw-type tapper 20 par-a-matic jaw-type tapper 20 par-a-matic twin drill 14 par-a-matic twin drill 14 par-a-matic twin drill 14 par-a-matic twin drill 14 par-a-matic twin drill 14 par-a-matic twin drill 14 super par-a-matic valve-in-head drill 12 super par-a-matic valve-in-head drill 12 super par-a-matic valve-in-head drill 12 super par-a-matic valve-in-head drill 12 super par-a-matic valve-in-head drill 12 super par-a-matic valve-in-head drill 12 super par-a-matic valve-in-head drill 12 par-a-matic offset drill 16 par-a-matic offset drill 16 par-a-matic offset drill 16 par-a-matic offset drill 16 super par-a-matic twin drill 14 super par-a-matic twin drill 14

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numerical model index model 8268-a12 8268-a25 8268-a46 8345-b8 8345-b30 8345-b45 8345-203 8355-a5 8355-a8 8355-a14 8355-a21 8355-a28 8355-a50 8355-171 8360-a5-3 8360-a8-3 8360-a14-3 8360-a21-3 8360-a28-3 8360-a50-3 8360-171-3 8655-b 8656-b 8657-b 8658-b 8659-b 8670-4-3 8670-8-3 8670-13-3 8670-28-3 8670-47-3 description page super par-a-matic twin drill 14 super par-a-matic twin drill 14 super par-a-matic twin drill 14 bant-a-matic thru-head drill 12 bant-a matic thru-head drill 12 bant-a matic thru-head drill 12 bant-a-matic thru-head drill 12 par-a-matic thru-head drill 12 par-a-matic thru-head drill 12 par-a-matic thru-head drill 12 par-a-matic thru-head drill 12 par-a-matic thru-head drill 12 par-a-matic thru-head drill 12 par-a-matic thru-head drill 12 par-a-matic peck drill 17 par-a-matic peck drill 17 par-a-matic peck drill 17 par-a-matic peck drill 17 par-a-matic peck drill 17 par-a-matic peck drill 17 par-a-matic peck drill 17 lead screw tapper 22 lead screw tapper 22 lead screw tapper 22 lead screw tapper 22 lead screw tapper 22 hi-thrust self-feed drill 18 hi-thrust self-feed drill 18 hi-thrust self-feed drill 18 hi-thrust self-feed drill 18 hi-thrust self-feed drill 18 3

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tool selection self-feed tool performance tool series bant-a-matic 8245 8246 8248 series 34a electra-feed par-a-matic 8255 8256 8258 8266 series 54c electra-feed super par-a-matic 8265 8268 series 74b electra-feed hi-thrust 8670 lead screw tapper all at 90 psi at tool inlet while operating motor h.p 1/4 1/3 1/2 1/2 3/4 3/4 1-1/4 5/8 thrust in pounds 90 330 170 330 250 330 500 air consumption in cubic feet at working speed typ 6 sec cycle one min operation 1.5 n/a 2.3 n/a 2.9 n/a 5.0 3.0 15.0 0.14 per cycle 23.0 0.14 per cycle 29.0 0.14 per cycle 50.0 30.0 positive feed mechanism no piston thrust self-feed drill selection guide how to use chart the selection chart below provides model recommendations based on factors of textbook speeds actual drill test results and judgements based on available power and thrust it should be used as a guide only in selecting the model or models best suited to meet the general machining requirements of these materials proper selection of a feed tool for a specific application however must also take into account the density and hardness of the material to be drilled the type of drill bit used the cutting lubricant or coolant used the production cycle desired tool life and the amount of compressed air available those models in italics are generally considered the more appropriate selections but where more than one model is given the more powerful tool will do the job faster therefore the best tool for the job will depend upon the desired production rate and the amount of available compressed air drill dia aluminum 2024-t4 single spindle twin drill 8245-203 8255-101 8245-b45 8255-101 8245-b30 8255-a50 8245-b30 8255-a28 8255-a14 8265-25 8265-12 8670-47 8258-c50 8258-c28 8258-c50 8268-a46 8258-c28 8268-a46 8258-c14 8268-a46 8268-a25 8268-a12 8268-a12 8268-a6 brass sae 72 single spindle twin drill 8245-203 8245-101 8245-b45 8255-101 8245-b30 8255-a50 8245-b8 8255-a28 8265-46 8255-a28 8265-25 8255-a14 8265-12 8670-47 8258-c50 8258-c50 8268-a46 8258-c28 8268-a46 8258-c14 8268-a46 8268-a25 8268-a12 8268-a12 8268-a6 steel sae 1213 single spindle twin drill 8245-b45 8265-46 8245-b30 8255-a50 8245-b8 8255-a28 8265-25 8255-a14 8265-25 8258-c50 8248-b45 8248-b30 8258-c28 8268-a25 8258-c14 8268-a25 8268-a12 8258-c5 8268-a12 8268-a25 8268-a12 8268-a6 8268-a6 8268-a3 wood medium or frp single spindle twin drill 8245-203 8255-172 8245-101 8245-b45 8245-b30 8255-a50 8245-b30 8255-a28 8245-b8 8255-a21 8265-46 8255-a8 8265-25 8265-25 8258-c50 8248-b30 8258-c50 8268-a46 8258-c28 8268-a25 8258-c14 8268-a25 8268-a25 8265-a12 8258-a12 8268-a25 1/16 1.59 mm 1/8 3.17 mm 3/16 4.76 mm 1/4 6.35 mm 5/16 7.92 mm 3/8 9.52 mm 7/16 11.10 mm 1/2 12.70 mm 9/16 14.27 mm 5/8 15.87 mm 11/16 17.45 mm 3/4 19.05 mm 8255-a5 8265-12 8265-6 8670-13 8265-12 8670-47 8265-12 8670-47 8265-6 8670-28 8265-3 8670-13 8265-12 8670-47 8265-12 8670-28 8265-6 8670-28 8265-3 8670-13 8265-6 8670-13 8265-3 8670-8 8265-12 8670-47 8265-12 8670-28 8265-6 8670-28 8265-3 8670-13 8670-8 8670-8 8265-3 8670-4 8670-8 8670-8 8670-8 8670-4 8670-4 8670-4 4

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aro automatic machining tools precision and versatility at the cutting edge today s fast paced and increasingly complex manufacturing environment demands versatile and affordable tools tools that are precise and reliable tools that are easy to use and simple to maintain and most of all able to evolve if and when production needs change aro automatic machining tools bring these qualities and more to your secondary machining operations designed with extensive input from customers throughout industry this tool line offers the most efficient and flexible tools for drilling reaming countersinking counterdrilling and tapping requirements in most metals and non-metals whether your application is in plastic molding metal die casting or woodworking aro pneumatic and electric/pneumatic self-feed drills and lead screw tappers deliver highly effective and economical solutions to thousands of machining challenges · series 34a · series 54c · series 74b 1/3 hp 1/2 hp 3/4 hp 5/16 capacity steel 3/8 capacity steel 1/2 capacity steel customer-driven design for versatility and easy maintenance aro s series 34 54 and 74 models are highly flexible and extremely versatile offering simple design innovations that put them ahead of other products in their class · an extensive selection of tapping heads drill chucks and collets that can be interchanged as applications demand · 20 spindle speeds for optimum performance driven by an easy-to-access pulley system that can be changed quickly and easily to accommodate new diameters or materials · compact size 24 inches and modest weight 30 ibs for flexibility in use and mounting allowing a maximum number of simultaneous secondary operations · a simple customer-driven design that includes fewer parts than competitive tools with less-frequent lower-cost maintenance · a central module for three remote control options electronic 24v dc electric 115v ac and pneumatic allows for easier machine diagnostics · manual controls for feed and retract that remain operational for setup while using remote controls · standard frame motors with dual voltage capabilities 230/460v ac depending upon your process requirements and plant power sources you can choose from electric/pneumatic or pneumatic self-feed drills pneumatic self-feed and lead screw tappers plus a wide range of spindle control and mounting accessories all provide exceptional precision and versatility for example on one foundation for the new series 34 electra-feed drill you can select from among 20 rapid-change speeds and 10 versatile spindle accessories to design a custom tool should your needs change you can transform the tool with minimal additional investment simply alter the speed via a new pulley set or switch your spindle accessory to address a new application the remarkable flexibility of series 34 54 and 74 models is surpassed only by their precision our spindle with pre-loaded bearing support offers accurate targeting longevity and runout of .001 t.l.r or less and built-in dwell control holds repeatable depth to within .002 inches electric spindle power is ideal for plants with a limited supply of compressed air or for operations seeking to supplement existing pneumatic tools this catalog is the perfect starting point and your aro distributor or representative will be happy to provide expert consultation to help you meet your business objectives 5

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electric/pneumatic self-feed drills reliable and precise performance for consistent results each unique feature of the aro series 34 54 and 74 electra-feed drill supports unsurpassed performance accuracy · a precision spindle with pre-loaded bearing support for accurate targeting longevity and .001 t.i.r runout or less · built-in dwell control that holds repeatable depth within .002 inches · individually adjustable feed rate control for advance and retract · the longest usable tool stroke length adjustable to 110 mm [4.33 inches available in such a compact tool · variable thrust from 150 to 330 ibs for proper penetration power and rate · a heavy duty ball-bearing supported drive train that is fully sealed and prelubed · air and electric i/o s for control and feedback 5-1/4 11-5/8 see page 51 for more dimensions 6

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electric/pneumatic self-feed drills made in the u.s.a to the following specifications example of product identification f self feed electric power horsepower stroke f 3 e 4 0 a 3 4 a 7 7 b a e 0 type motor variations speed variations generation model number fe034a a fe034a-77b-a fe034a-67b-a fe034a-59b-a fe034a-54b-a fe034a-48b-a fe034a-43b-a fe034a-38b-a fe034a-34b-a fe034a-30b-a fe034a-27b-a fe034a-24b-a fe034a-22b-a fe034a-19b-a fe034a-17b-a fe034a-38c-a fe034a-34c-a fe034a-30c-a fe034a-27c-a fe034a-24c-a fe034a-22c-a fe034a-19c-a fe034a-17c-a fe034a-15c-a fe034a-14c-a fe034a-12c-a fe034a-11c-a fe034a-10c-a fe034a-08c-a free speed r.p.m 7690 6750 5954 5400 4800 4274 3808 3398 3030 2700 2400 2178 1920 1685 3845 3375 2977 2700 2400 2137 1904 1699 1516 1350 1199 1089 959 842 load speed peak h.p r.p.m 7013 6155 5486 4977 4470 3979 3582 3197 2851 2566 2279 2070 1822 1600 3507 3078 2744 2488 2235 1990 1791 1598 1426 1283 1139 1034 911 800 torque peak h.p lb.ft 0.23 0.26 0.30 0.33 0.38 0.42 0.47 0.53 0.60 0.67 0.75 0.83 0.94 1.07 0.47 0.53 0.60 0.67 0.75 0.83 0.94 1.07 1.20 1.34 1.50 1.66 1.88 2.14 stainless 300 series .018 020 .020 026 .026 029 .029 032 .032 037 .037 041 .041 046 .046 052 .052 059 .059 067 .067 073 .073 081 .081 093 .093 098 .041 046 .046 052 .052 059 .059 067 .067 073 .073 081 .081 093 .093 098 .098 109 .109 116 .116 125 .125 140 .140 161 .161 187 nominal drilling capacities steel aluminum s.a.e 1213 2024-t4 .036 040 .040 046 .046 052 .052 059 .059 063 .063 073 .073 082 .082 093 .093 104 .104 116 .116 128 .128 147 .147 164 .164 187 .073 082 .082 093 .093 104 .104 116 .116 128 .128 147 .147 164 .164 187 .187 204 .204 234 .234 250 .250 265 .265 281 .281 312 .070 093 .093 101 .101 116 .116 136 .136 147 .147 166 .166 187 .187 201 .201 221 .221 234 .234 265 .265 281 .281 296 .296 312 .166 187 .187 201 .201 221 .221 234 .234 265 .265 281 .281 296 .296 312 .312 328 .328 343 .343 359 .359 375 .375 390 .390 406 med wood or f.r.p .078 096 .096 110 .110 125 .125 140 .140 156 .156 187 .187 209 .209 234 .234 265 .265 281 .281 312 .312 343 .343 390 .390 406 .187 209 .209 234 .234 265 .265 281 .281 312 .312 343 .343 390 .390 406 .406 421 .421 437 .437 453 .453 468 .468 484 .484 531 note tools are not supplied with the required motor starter the starter unit should conform to local/national regulations and must provide overload protection complete wiring and connection data are given in the tool s operator s manual motor b part no 49685-1 .33 h.p 3600 r.p.m 220/270 vc 380/460 vy 3 ph 60 hz air consump per cycle .014 ft.3 .40 l operating sound level 60 db a 330 100 stroke length 4.33 inches 11o mm 314 95 297 90 spindle mount #33 jacobs male 280 85 264 80 power air inlet 1/8 n.p.t female 248 75 motor c part no 49685-2 .33 h.p 1800 r.p.m 220/270 vc 380/460 vy 3 ph 60 hz req inlet hose size 1/4 i.d 231 70 215 65 198 60 remote control port size #10-32 female 182 55 165 50 operating pressure range 50-100 p.s.i.g 149 45 thrust output lbs air pressure p.s.l.g 7

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electric/pneumatic self-feed drills made in the u.s.a to the following specifications example of product identification f self feed electric power horsepower stroke f 5 e 4 0 c 5 4 c 2 2 b a e 0 type motor variations speed variations generation model number fe054c a fe054c-77b-a fe054c-67b-a fe054c-59b-a fe054c-54b-a fe054c-48b-a fe054c-43b-a fe054c-38b-a fe054c-34b-a fe054c-30b-a fe054c-27b-a fe054c-24b-a fe054c-22b-a fe054c-19b-a fe054c-17b-a fe054c-38c-a fe054c-34c-a fe054c-30c-a fe054c-27c-a fe054c-24c-a fe054c-22c-a fe054c-19c-a fe054c-17c-a fe054c-15c-a fe054c-14c-a fe054c-12c-a fe054c-11c-a fe054c-10c-a fe054c-08c-a free speed r.p.m 7690 6750 5954 5400 4800 4274 3808 3398 3031 2700 2398 2178 1918 1684 3845 3375 2977 2700 2400 2137 1904 1699 1516 1350 1199 1089 959 842 load speed peak h.p r.p.m 7013 6155 5486 4977 4470 3979 3582 3197 2851 2566 2279 2070 1822 1600 3507 3078 2744 2488 2235 1990 1791 1598 1426 1283 1139 1034 911 800 torque peak h.p lb ft 0.32 0.36 0.41 0.46 0.51 0.57 0.65 0.72 0.81 0.91 1.03 1.13 1.28 1.46 0.65 0.72 0.81 0.91 1.03 1.13 1.28 1.46 1.62 1.82 2.05 2.26 2.56 2.92 stainless 300 series .018 020 .020 026 .026 032 .032 038 .038 048 .048 054 .054 060 .060 066 .066 072 .072 078 .078 084 .084 090 .090 096 .096 110 .054 060 .060 066 .066 072 .072 078 .078 084 .084 090 .090 096 .096 110 .110 125 .125 136 .136 152 .152 166 .166 182 .182 201 nominal drilling capacities steel aluminum s.a.e 1213 2024-t4 .036 046 .046 055 .055 062 .062 073 .073 081 .081 086 .086 093 .093 101 .101 110 .110 125 .125 138 .138 156 .156 187 .187 250 .086 093 .093 101 .101 110 .110 125 .125 138 .138 156 .156 187 .187 250 .250 281 .281 312 .312 343 .343 359 .359 375 .375 390 .070 101 .101 125 .125 147 .147 169 .169 187 .187 196 .196 228 .228 250 .250 281 .281 296 .296 312 .312 343 .343 375 .375 406 .196 228 .228 250 .250 281 .281 296 .296 312 .312 343 .343 375 .375 406 .406 421 .421 437 .437 453 .453 468 .468 484 .484 500 med wood or f.r.p .078 096 .096 125 .125 140 .140 156 .156 187 .187 228 .228 250 .250 281 .281 312 .312 343 .343 375 .375 406 .406 437 .437 484 .228 250 .250 281 .281 312 .312 343 .343 375 .375 406 .406 437 .437 484 .484 531 .531 562 .562 593 .593 625 .625 656 .656 687 note tools are not supplied with the required motor starter the starter unit should conform to local/national regulations and must provide overload protection complete wiring and connection data are given in the tool s operator s manual motor b part no 49685-3 .50 h.p 3600 r.p.m 220/270 vc 380/460 vy 3 ph 50/60 hz motor c part no 49685-4 .50 h.p 1800 r.p.m 220/270 vc 380/460 vy 3 ph 50/60 hz air consump per cycle .014 ft.3 .40 l operating sound level 60 db a 330 100 stroke length 4.33 inches 110 mm 314 95 297 90 spindle mount #33 jacobs male 280 85 264 80 power air inlet 1/8 n.p.t female 248 75 231 70 req inlet hose size 1/4 i.d 215 65 198 60 remote control port size #10-32 female 182 55 operating pressure range 50-100 p.s.i.g 165 50 149 45 thrust output lbs air pressure p.s.l.g 8

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electric/pneumatic self-feed drills made in the u.s.a to the following specifications example of product identification f self feed electric power horsepower stroke f 7 e 4 0 b 7 4 b 3 0 c a e 0 type motor variations speed variations generation model number fe074b a fe074b-77b-a fe074b-67b-a fe074b-59b-a fe074b-54b-a fe074b-48b-a fe074b-43b-a fe074b-38b-a fe074b-34b-a fe074b-30b-a fe074b-27b-a fe074b-24b-a fe074b-22b-a fe074b-19b-a fe074b-17b-a fe074b-38c-a fe074b-34c-a fe074b-30c-a fe074b-27c-a fe074b-24c-a fe074b-22c-a fe074b-19c-a fe074b-17c-a fe074b-15c-a fe074b-14c-a fe074b-12c-a fe074b-11c-a fe074b-10c-a fe074b-08c-a free speed r.p.m 7690 6750 5954 5400 4800 4274 3808 3398 3031 2700 2398 2178 1918 1684 3845 3375 2977 2700 2400 2137 1904 1699 1516 1350 1199 1089 959 842 load speed peak h.p r.p.m 7013 6155 5486 4977 4470 3979 3582 3197 2851 2566 2279 2070 1822 1600 3507 3078 2744 2488 2235 1990 1791 1598 1426 1283 1139 1034 911 800 torque peak h.p lb ft 0.48 0.54 0.62 0.69 0.77 0.86 0.98 1.08 1.22 1.37 1.55 1.70 1.92 2.19 0.98 1.08 1.22 1.37 1.55 1.70 1.92 2.19 2.43 2.73 3.08 3.39 3.84 4.38 stainless 300 series .018 020 .020 026 .031 036 .036 042 .042 054 .054 062 .062 070 .070 078 .078 084 .084 090 .090 101 .101 110 .110 125 .125 136 .062 070 .070 078 .078 084 .084 090 .090 101 .101 110 .110 125 .125 136 .136 156 .156 187 .187 190 .190 203 .203 250 .250 312 nominal drilling capacities steel aluminum s.a.e 1213 2024-t4 .046 055 .055 062 .062 070 .070 084 .084 090 .090 101 .101 112 .112 125 .125 140 .140 156 .156 187 .187 203 .203 218 .218 234 .101 112 .112 125 .125 140 .140 156 .156 187 .187 203 .203 218 .218 265 .265 315 .315 343 .343 375 .375 437 .437 500 .500 531 .070 125 .125 140 .140 156 .156 183 .183 196 .196 218 .218 250 .250 281 .281 312 .312 340 .340 375 .375 406 .406 437 .437 468 .218 250 .250 281 .281 312 .312 340 .340 375 .375 406 .406 437 .437 468 .468 484 .484 500 .500 531 .531 546 .546 562 .562 625 med wood or f.r.p .078 109 .109 140 .140 187 .187 250 .250 312 .312 375 .375 437 .437 468 .468 500 .500 531 .531 562 .562 593 .593 625 .625 656 .375 437 .437 468 .468 500 .500 531 .531 562 .562 593 .593 625 .625 656 .656 687 .687 718 .718 750 .750 781 .781 812 .812 875 note tools are not supplied with the required motor starter the starter unit should conform to local/national regulations and must provide overload protection complete wiring and connection data are given in the tool s operator s manual motor b part no 49685-5 .75 h.p 3600 r.p.m 220/270 vc 380/460 vy 3 ph 50/60 hz motor c part no 49685-6 .75 h.p 1800 r.p.m 220/270 vc 380/460 vy 3 ph 50/60 hz air consump per cycle .014 ft.3 .40 l operating sound level 60 db a 330 100 stroke length 4.33 inches 110 mm 314 95 297 90 spindle mount #33 jacobs male 280 85 264 80 power air inlet 1/8 n.p.t female 248 75 231 70 req inlet hose size 1/4 i.d 215 65 198 60 remote control port size #10-32 female 182 55 operating pressure range 50-100 p.s.i.g 165 50 149 45 thrust output lbs air pressure p.s.l.g 9

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electric/pneumatic self-feed drills interchangeable spindle accessories address a multitude of needs the electra-feed drills can be used with an extensive selection of tapping heads drill chucks and collets that can be changed as your secondary machining applications demand this flexibility helps ensure that your investment today won t be obsolete tomorrow series 34a 54c 74b spindle options collet 48175 see chart at right 7/32­3/4 cap 3.750 3.750 max max twin drill head 47276 see chart at right adjustable centers .750 .750 max max ª chuck 49905 0­3/8 cap precision see collets 46033 3.750 3.750 max max twin tap head 47908 see chart at right adjustable centers º chuck 46977 1/32­1/2 cap collar .750 .750 max max see collets 46033 10

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electric/pneumatic self-feed drills bore diameter +000 0035 .079 .083 .087 .091 .094 .098 .102 .106 .110 .114 .118 .122 .126 .130 .134 .138 .142 .146 .150 .154 .157 .161 .165 .169 .173 .177 .181 .185 .189 .193 .197 .201 .205 .209 .213 .216 .220 .224 drill sizes inch no mm 5/64 47 2.0 45 2.1 44 2.2 43 2.3 3/32 42 2.4 40 2.5 38 2.6 36 2.7 7/64 35 2.8 33 2.9 32 3.0 31 3.1 1/8 3.2 30 3.3 29 3.4 3.5 9/64 28 3.6 26 3.7 25 3.8 23 3.9 5/32 22 4.0 20 4.1 19 4.2 18 4.3 11/64 17 4.4 l 6 4.5 14 4.6 13 4.7 3/16 12 4.8 10 4.9 9 5.0 7 5.1 13/64 5 5.2 4 5.3 3 5.4 5.5 7/32 2 5.6 5.7 twin drill collets bore collet diameter no +000 0035 46033-1 .228 46033-2 .232 46033-3 .236 46033-4 .240 46033-5 .244 46033-6 .248 46033-7 .252 46033-8 .256 46033-9 .260 46033-10 .264 46033-11 .268 46033-12 .272 46033-13 .276 46033-14 .280 46033-15 .283 46033-16 .287 46033-17 .291 46033-18 .295 46033-19 .299 46033-20 .303 46033-21 .307 46033-22 .311 46033-23 .315 46033-24 .319 46033-25 .323 46033-26 .327 46033-27 .331 46033-28 .335 46033-29 .339 46033-30 .342 46033-31 .346 46033-32 .350 46033-33 .354 46033-34 .358 46033-35 .362 46033-36 .366 46033-37 .370 46033-38 .375 drill sizes inch no mm 1 5.8 5.9 15/64 a 6.0 b 6.1 c 6.2 d 6.3 1/4 e 6.4 f 6.5 g 6.6 17/64 6.7 h 6.8 i 6.9 j 7.0 9/32 k 7.1 7.2 7.3 l 7.4 m 7.5 19/64 7.6 n 7.7 7.8 5/16 7.9 o 8.0 8.1 p 8.2 21/64 8.3 q 8.4 8.5 r 8.6 11/32 8.7 8.8 s 8.9 9.0 23/64 t 9.1 9.2 9.3 u 9.4 3/8 9.5 collet no 46033-39 46033-40 46033-41 46033-42 46033-43 46033-44 46033-45 46033-46 46033-47 46033-48 46033-49 46033-50 46033-51 46033-52 46033-53 46033-54 46033-55 46033-56 46033-57 46033-58 46033-59 46033-60 46033-61 46033-62 46033-63 46033-64 46033-65 46033-66 46033-67 46033-68 46033-69 46033-70 46033-71 46033-72 46033-73 46033-74 46033-75 46033-76 series 48175 specifications length 3 5/16 84 mm taper no 33 jacobs outside diameter 1 3/4 44 mm approx tooling penetration 1 7/8 42.6 mm subassemblies 48091 body 35264 insert collet no 48175-1 48175-2 48175-3 46175-4 48175-5 48175-6 48175-7 48175-8 48175-9 48175-10 48175-11 46175-12 48175-13 48175-14 48175-15 48175-16 48175-17 size range in mm 7/32 1/4 5.5-6.4 1/4 9/32 6.4-7.1 9/32 5/16 7.1-7.9 5/16 11/32 7.9-8.7 11/32 3/8 8.7-9.5 3/8 13/32 9.5-10.3 13/32 7/16 10.3-11.1 7/16 15/32 11.1-11.9 15/32 1/2 11.9-12.7 1/2 17/32 12.7-13.5 17/32 9/16 13.5-14.3 9/16 19/32 14.3-15.1 19/32 5/8 15.1-15.9 5/8 21/32 15.9-16.6 21/32 11/16 16.6-17.4 11/16 23/32 17.4-18.2 23/32 3/4 18.2-19.0 insert 35264-1 35264-2 35264-3 35264-4 35264-5 35264-6 35264-7 35264-8 35264-9 35264-10 35264-11 35264-12 35264-13 35264-14 35264-15 35264-16 35264-17 46983 wedge set to remove chuck from tapered spindle 49785 49786 twin tap collets tap size #0 6 #8 #10 #12 1/4 5/16 49787 59764-4 ª tap adapters for quick change tapping head part no 49766-1 49766-2 49766-3 49766-4 49766-5 49766-6 49766-7 49766-8 adapter adapter adapter adapter adapter adapter adapter adapter #0 6 #8 #10 1/4 #0 6 #8 #10 1/4 tap size tap size tap size tap size tap size tap size tap size tap size positive drive positive drive positive drive positive drive torque control torque control torque control torque control control accessories switch kit provides output for electric tool is forward or tool is retracted signals ac or dc solenoid kit 120 vac provides input for remote start or emergency retract signals solenoid kit 24 vdc provides input for remote start or emergency retract signals connector 10 pcs box used to connect input output ports to air signal tubing shown on page 37 feed rate controls part no 38922 38922-1 38922-2 1 stroke hydraulic check 2 stroke hydraulic check 3 stroke hydraulic check 11

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pneumatic self-feed drills aro bant-a-matic par-a-matic and super par-a-matic drills provide the selection performance and degree of precision to automate a wide range of secondary machining applications simply and economically they utilize compressed air for both the spindle rotation and feed control functions the reliable rotary-vane air motor offers high power-to-size performance which minimizes tool size and weight for added machine design flexibility the tools are easily installed requiring only simple pneumatic circuitry they can be used individually or in conjunction with other aro electric and pneumatic tools additional features benefits include · built-in four-way valve enables both manual and remote operation · double-acting air piston provides smooth controlled forward and retract strokes · needle valve controls allows adjustment of forward and retract strokes · adjustment screw provides infinite stroke length settings · ball bearing spindle support offers precision and long service life · muffled exhaust for a quieter work environment bant-a-matic® series 3/16 4.8 mm capacity steel · .25 hp 20 kw model 8245-b45-2 par-a-matic® series 5/16 7.9 mm capacity steel · .50 hp 37 kw model 8255-a14-2 super par-a-matic® series 1/2 12.7 mm capacity steel · .75 hp 56 kw model 8265-25-3 model identification 8 controls 2 valve-in-head built-in valving 3 thru-head external valving required series 45 bant-a-matic 55 par-a-matic 65 super par-a-matic 2 55 a 21 2 stroke length free speed tool generation 12

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pneumatic self-feed drills specifications models stroke lengths bant-a-matic series 1-1/4 32 mm 2.0 51 mm 3.0 76 mm 8245-203-1 8245-203-2 8245-203-3 8245-101-1 8245-101-2 8245-101-3 8245-b45-1 8245-b45-2 8245-b45-3 8245-b30-1 8245-b30-2 8245-b30-3 8245-b8-1 8245-b8-2 8245-b8-3 par-a-matic series 1-1/4 32 mm 2.0 51 mm 8255-172-1 8255-172-2 8255-101-1 8255-101-2 8255-a50-1 8255-a50-2 8255-a28-1 8255-a28-2 8255-a21-1 8255-a21-2 8255-a14-1 8255-a14-2 8255-a8-1 8255-a8-2 8255-a5-1 8255-a5-2 3.0 76 mm 8255-172-3 8255-101-3 8255-a50-3 8255-a28-3 8255-a21-3 8255-a14-3 8255-a8-3 8255-a5-3 free nominal drilling capacities thrust air consp sound std chuck speed stnls steel steel aluminum wood med @90 psi @working speed level capacity gear 3 rpm type 304 sae 1213 2024-t4 or frp lb n ft /cycle l/cycle dba in mm reduction 19,000 10,000 4,400 2,700 900 1/640.4 1/32 0.8 1/64 0.4 1/32 0.8 1/16 1.6 1/32 0.8 1/16 1.6 1/8 3.2 1/16 1.6 1/8 3.2 3/16 4.8 3/32 2.4 3/16 4.8 1/4 6.4 1/16 1.6 1/8 3.2 5/32 4.0 3/16 4.8 5/16 7.9 90 400 1.5 42 77 1/4 6.4 single double single single double 17,000 10,000 5,000 2,800 2,100 1,450 850 500 1/16 1.6 7/64 2.8 5/32 4.0 11/64 4.4 1/4 6.4 1/64 0.4 1/32 0.8 5/64 2.0 9/64 3.6 7/32 5.6 1/4 6.4 9/32 7.1 5/16 7.9 1/32 0.8 1/16 1.6 3/16 4.8 1/4 6.4 9/32 7.1 5/16 7.9 21/64 8.3 11/32 8.7 1/16 1.6 5/32 4.0 3/16 4.8 1/4 6.4 5/16 7.9 170 756 3/8 9.5 25/64 9.9 13/32 10.3 2.3 65 74 5/16 79 single double single single single double double double super par-a-matic series 1-1/2 38 mm 3.0 76 mm 8265-171-1 8265-171-3 8265-101-1 8265-101-3 8265-46-1 8265-46-3 8265-25-1 8265-25-3 8265-12-1 8265-12-3 8265-6-1 8265-6-3 8265-3-1 8265-3-3 17,000 10,000 4,600 2,500 1,200 650 350 3/32 2.4 5/32 4.0 17/64 6.7 5/16 7.9 1/64 0.4 3/64 1.2 1/8 3.2 3/16 4.8 5/16 7.9 7/16 11.1 1/2 12.7 3/32 2.4 5/32 4.0 1/4 6.4 5/16 7.9 3/8 9.5 9/16 14.3 5/8 15.9 3/32 2.4 5/32 4.0 5/16 7.9 7/16 11.1 250 1112 9/16 14.3 5/8 15.9 11/16 17.5 2.9 82 77 1/2 12.7 single double single single double double double note 17,000 19,000 rpm units have collet in spindle see pages 52 54 56 consumption in cubic feet during a typical 6 second cycle time note performance data given at 90 psi 6.2 bar operating pressure tool series bant-a-matic par-a-matic super par-a-matic air inlet 1/8 npt male 1/4 npt male 1/4 npt male control ports 1/8 nptf female 1/8 nptf female 1/8 nptf female spindle thread 1/2 20 male 1/2 20 male 1/2 20 male recommended hose size 1/4 id 5/16 id 3/8 id recommended operating pressure 90 psi 6.2 bar 90 psi 6.2 bar 90 psi 6.2 bar to order a thru-head tool requires an external four-way valve for controls change the 2 in the base model number to 3 bant-a-matic and par-a-matic series tools only example 8355-a21-2 thru-head tools available in super par-a-matic series only as a custom order tool 47884 pneumatic interface kit contains 2 each of 6045 elbow and 9600 bleeder valve standard equipment bant-a-matic series · 33906 1/4 6.4 mm cap chuck · 47884 pneumatic controls interface kit · 203 units have collet built-in spindle instead of chuck see page 63 for selection of collet accessories at extra cost bant-a-matic series · 40301 hydraulic checks · 39486 flange bracket · 39485-1 foot bracket · 45053 h.d foot bracket · 36042 split-block clamp · nose housings · drill bushing adapters · control kits · service kits par-a-matic series · 33907 3/8 9.5 mm cap chuck · 47884 pneumatic controls interface kit · 172 units have collet built-in spindle instead of chuck see page 63 for selection of collet super par-a-matic series · 30018 1/2 12.7 mm cap chuck · 47884 pneumatic controls interface kits · 171 units have collet built-in spindle instead of chuck see page 63 for selection of collet par-a-matic series · 40591 hydraulic checks · 38877 flange bracket · 38875-1 foot bracket · 45055 h.d foot bracket · 35283 split-block clamp · nose housings · drill bushing adapters · control kits · service kits super par-a-matic series · 40591 hydraulic checks · 40589 flange bracket · 40588-1 foot bracket · 45056 h.d foot bracket · 41454 collet-type foot bracket · nose housings · nose housing adapters · drill bushing adapters · control kits · service kits 13

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pneumatic self-feed twin drills aro twin drills perform two machining operations per cycle for holes with center distances from 3/8 to 3 3/4 they re ideal for many closecenter machining problems but even more important aro twin drills significantly reduce machining time and parts handling while improving quality three series of standard tools are available equipped with adjustable dual spindle heads like the other aro automatic production tools each twin drill is a completely self-contained unit with built-in cycle feed rate and motor controls they can be operated individually or in conjunction with other tools and machine components additional features benefits include · adjustable spindles allow reapplication as machining requirements change · comprehensive range of american and metric collets available to meet a wide variety of hole specifications · double-acting air piston provides smooth controlled forward and retract strokes · needle valve controls allow adjustment of forward and retract strokes · adjustment screw provides infinite stroke length settings up to 3.0 maximum · muffled exhaust for a quieter work environment bant-a-matic® series 1/8 3.2 mm capacity steel · .25 hp 19 kw model 8248-b30-2 par-a-matic® series 1/4 6.4 mm capacity steel · .50 hp 37 kw model 8258-c21-2 super par-a-matic® series 3/8 9.5 mm capacity steel · .75 hp 56 kw model 8268-a25-3 model identification 8 valve-in-head built-in control valve 2 58 c 21 2 stroke length free speed tool generation series 48 bant-a-matic 58 par-a-matic 68 super par-a-matic 14

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pneumatic self-feed twin drills specifications models stroke lengths bant-a-matic series 1-1/4 32 mm 2.0 51 mm 3.0 76 mm 8248-b45-1 8248-b45-2 8248-b45-3 8248-b30-1 8248-b30-2 8248-b30-3 8248-b8-1 8248-b8-2 8248-b8-3 par-a-matic series 1-1/4 32 mm 2.0 51 mm 8258-c50-1 8258-c50-2 8258-c28-1 8258-c28-2 8258-c21-1 8258-c21-2 8258-c14-1 8258-c14-2 8258-c8-1 8258-c8-2 8258-c5-1 8258-c5-2 3.0 76 mm 8258-c50-3 8258-c28-3 8258-c21-3 8258-c14-3 8258-c8-3 8258-c5-3 free nominal drilling capacities thrust air consp sound std chuck speed stnls steel steel aluminum wood med @90 psi @working speed level capacity gear 3 rpm type 304 sae 1213 2024-t4 or frp lb n ft /cycle l/cycle dba in mm reduction 4,400 2,700 900 1/32 78 1/16 1.6 3/32 2.4 3/32 2.4 1/16 1.6 3/32 2.4 1/8 3.2 1/8 3.2 90 400 1/8 3.2 1/8 3.2 3/16 4.8 3/16 4.8 1.5 42 77 5/32 4.0 single single double 5,000 2,800 3/64 1.2 2,100 5/64 1.9 1,450 7/64 2.7 850 11/64 4.3 500 1/4 6.4 1/16 1.6 1/8 3.2 5/32 4.0 3/16 4.5 1/4 6.4 1/4 6.4 1/8 3.2 3/16 4.5 7/32 5.6 1/4 6.4 9/32 7.1 5/16 7.9 1/8 3.2 3/16 4.5 7/32 5.6 170 756 1/4 6.4 9/32 7.1 5/16 7.9 2.3 65 74 1/4 6.4 single single single double double double super par-a-matic series 1-1/2 38 mm 3.0 76 mm 8268-a46-1 8268-a46-3 4,600 1/4 6.4 3/16 4.8 8268-a25-1 8268-a25-3 2,500 1/16 1.6 1/4 6.4 5/16 7.9 5/16 7.9 8268-a12-1 8268-a12-3 1,200 1/8 3.2 5/16 7.9 11/32 8.7 3/8 9.5 250 1112 8268-a6-1 8268-a6-3 650 13/64 5.2 11/32 8.7 3/8 9.5 7/16 11.1 8268-a3-1 8268-a3-3 350 5/16 7.9 3/8 9.5 13/32 10.315/32 11.9 2.9 82 77 3/8 9.5 single single double double double speed sensitive material consumption in cubic feet during a typical 6 second cycle time note performance data given at 90 psi 6.2 bar operating pressure spindle adjustment 3/8 to 2 1/8 centers 9.5 to 54 mm par-a-matic 1/2 to 2 1/2 centers 12.7 to 63.5 mm super par-a-matic 3/4 to 3 3/4 centers 19 to 95 mm tool series bant-a-matic air inlet 1/8 npt male 1/4 npt male 1/4 npt male control ports 1/8 nptf female 1/8 nptf female 1/8 nptf female recommended hose size 1/4 id 5/16 id 3/8 id recommended operating pressure 90 psi 6.2 bar 90 psi 6.2 bar 90 psi 6.2 bar standard equipment bant-a-matic series par-a matic series · 46394 twin drill head · 46023 twin drill head · 47884 pneumatic controls interface kit · 47884 pneumatic controls interface kit · necessary wrenches · necessary wrenches contains 2 6045 90° street elbows and 2 9600 pilot bleeder valves note collets for twin drills must be ordered separately at extra cost see page 28 super par-a-matic series · 46063 twin drill head · 47884 pneumatic controls interface kit · necessary wrenches accessories at extra cost bant-a-matic series · 47368 collets · 40301 hydraulic checks · 39486 flange bracket · 39485-1 foot bracket · 45053 h.d foot bracket · 36042 split-block clamp · control kits · service kits par-a-matic series · 45998 collets · 40591 hydraulic checks · 38877 flange bracket · 38875-1 foot bracket · 45055 h.d foot bracket · 35283 split-block clamp · control kits · service kits super par-a-matic series · 46033 collets · 40591 hydraulic checks · 40589 flange bracket · 40588-1 foot bracket · 45056 h.d foot bracket · 41454 collet-type foot bracket · control kits · service kits 15

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pneumatic self-feed offset drills aro automatic offset drills are offered to accommodate unusual part or fixture configurations they also may be grouped in a fixture to produce holes with a center-line distance as low as 1.5 offset drills are easily installed requiring only simple pneumatic circuitry they may also be used in conjunction with other pneumatic or electric aro automatic production tools additional features benefits include · built-in four-way valve for both manual and remote operation · double-acting air piston provides smooth controlled forward and retract strokes · infinite stroke length adjustment up to 2.0 maximum · feed rate adjustment screws for the forward and retract strokes provide optimum hole quality and cycle time · muffled exhaust for a more comfortable work environment · selection of mounting brackets to meet installation requirements par-a-matic® series 3/16 4.8 mm capacity steel · 50 hp 37 kw model 8266-a17-2 specifications models free speed rpm 2,300 1,750 1,200 700 nominal drilling capacities stnls steel steel aluminum wood med type 304 sae 1213 2024-t4 or frp n/a n/a n/a n/a 1/16 1.6 3/32 2.4 5/32 4.0 3/16 4.8 1/8 3.2 5/32 4.0 3/16 4.8 7/32 5.6 3/16 4.8 7/32 5.6 1/4 6.4 9/32 7.2 thrust @90 psi lb n air consp @working speed 3 ft /cycle l/cycle sound level dba std.chuck capacity gear in mm reduction double double double double 8266-a23-2 8266-a17-2 8266-a12-2 8266-a72 170 756 2.3 65 74 3/8 9.5 consumption in cubic feet during a typical 6 second cycle time note performance data given at 90 psi 6.2 bar air pressure air inlet 1/4 npt male control ports 1/8 nptf female spindle thread 3/8 24 male recommended hose size 5/16 id recommended operating pressure 90 psi 6.2 bar standard equipment · 47341 3/8 9.5 mm cap chuck · 47884 pneumatic controls interface kit contains 2 6045 90° street elbows and 2 9600 pilot bleeder valves accessories at extra cost · 40591 hydraulic checks · 38877 flange bracket · 38875-1 foot bracket · 45055 h.d foot bracket · 35283 split-block clamp · control kits · service kits 16

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pneumatic peck-feed drills aro peck-feed drills are designed specifically for applications where the hole depth exceeds four times the diameter of the drill bit they offer the advantages of deep-hole chip clearance with close diameter and axial controls the aro peck-feed drill is a complete self-contained unit the pecking operation is controlled by a pre-set timed sequence upon receiving a start signal the tool automatically advances drills to a selected peck depth and retracts continuing the cycle until the total hole depth is reached this sequential pecking action clears the hole and drill flutes of chips that produce frictional heat drag and drill skew it also greatly increases the life of small drills 3/32 thru no 80 that are sensitive to excessive thrust and radial loading additional features benefits include · manual and remote operation · muffled exhaust for a more comfortable work environment · selection of mounting brackets to meet installation requirements par-a-matic® series 5/16 7.9 mm capacity steel · .50 hp 37 kw model 8360-a28-3 specifications feed speed rpm 8360-172-3 17,000 8360-a50-3 5,000 8360-a28-3 2,800 8360-a21-3 2,100 8360-a14-3 1,450 8360-a8-3 850 8360-a5-3 500 models thrust @90 psi lb n free rate in m mm/m stroke length in mm peck range in mm rapid advance range in mm air consp @working speed 3/cycle l/cycle ft sound level dba std chuck capacity in mm gear reduction single single single single double double double 170 756 0 min to 40 max 29/32 to 2 1/4 0 to 1016 2.75 6.99 23 to 57 5/16 min to 1-21/32 max 7.9 to 42 2.3 65 74 3/8 9.5 note 17,000 rpm unit has collet in spindle see page 59 +consumption in cubic feet for a full minute of operation note performance data given at 90 psi 6.2 bar air pressure air inlet tool peck box 1/4 npt male 5/32 tubing control ports peck box 5/32 tube connection spindle thread 1/2 20 male recommended hose size 5/16 id recommended operating pressure 90 psi 6.2 bar standard equipment · 33907 3/8 9.5 mm cap chuck · peck-feed control accessories at extra cost · 38877 flange bracket · 38875-1 foot bracket · 45055 h.d foot bracket · 35283 split-block clamp · nose housing · drill bushing adapter · service kits 17

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pneumatic self-feed drills high-thrust 8670 series 5/8 15.9 mm capacity steel · 1.25 hp 93 kw model 8670-28-1 aro hi-thrust automatic feed drills are designed for increased material removal rates of standard alloys and non-ferrous materials their high power and thrust also enable the machining of even the most demanding materials including titanium and high-nickel alloys aro hi-thrust drills feature a dual piston which develops the increased thrust for fast penetration and reduced cycle times the tools are fully automatic with all cycle and motor functions regulated by a single control module they are easily installed requiring only simple pneumatic circuitry hi-thrust drills can also be used in conjunction with other pneumatic and electric aro automatic production tools additional features benefits include · adjustable hydraulic check provides positive feed rate control for fine adjustment of chip size or breakthrough control · dead stop and dwell control offer repeatable depth accuracy within .001 · heavy-duty cast iron housing for rigid mounting · constant tool length regardless of spindle speed allows speed change without repositioning the tool · both coarse and fine stroke length adjustments enables quick accurate setups · control module is a complete replaceable unit and can be easily removed without tool disassembly · modular motor and gearing units enable fast easy speed changes and servicing · single exterior lubrication point for entire gear train simplifies preventative maintenance · muffled exhaust for a more comfortable work environment · exhaust may be piped away model identification 86 70 ­ 28 ­ 3 series free speed stroke exhaust m 43874-1 muffler b 22827 barbed insert for 1/2 i.d exhaust hose drive options a 45177 3/4 cap chuck b 45176 3/8 cap chuck c 46090 no 1 morse taper adapter d 46091 no 2 morse taper adapter 18

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pneumatic self-feed drills 8670 specifications model free speed rpm 4,700 2,800 1,350 800 450 stnls steel type 304 3/16 4.8 5/16 7.9 3/8 9.5 1/2 12.7 nominal drilling capacities steel aluminum sae 1213 2024-t4 3/16 4.75 7/16 11.1 1/4 6.35 9/16 14.3 11/32 8.73 5/8 15.9 7/16 11.11 3/4 19.0 5/8 15.87 7/8 22.2 wood med or frp 1/2 12.7 5/8 15.9 3/4 19.0 7/8 22.2 1.0 25.4 thrust @90 psi lb n air consp @working speed 3 ft /cycle l/cycle sound std chuck stroke level capacity length dba in mm in mm 8670-47-3 8670-28-3 8670-13-3 8670-8-3 8670-4-3 500 2224 5.0 142 80 3/4 19.0 3.0 76 consumption in cubic feet during a typical 6 second cycle time note performance data given at 90 psi 6.2 bar air pressure air inlet 3/8 npt male control ports 1/8 nptf female spindle thread 5/8 16 male recommended hose size 5/8 i.d recommended operating pressure 90 psig 6.2 bar coupler/connection 1/2 f/r/l 1/2 standard equipment as ordered see model identification · 45177 3/4 19 mm cap chuck · 38922-1 2.0 hydraulic check · 45940 exhaust manifold · 43874-1 muffler or 2632 barbed insert · necessary wrenches · 45176 3/8 9.5 mm cap chuck · 46090 no 1 morse taper adapter · 46091 no 2 morse taper adapter accessories at extra cost · 38922-2 3.0 hydraulic check · 46133 twin hydraulic check assembly · 45185 foot bracket · 45188 nose housing · 46093 collets 19

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pneumatic self-feed tappers these tools are identical to the bant-a-matic and par-a-matic units described on pages 12 and 13 except that these are fitted with tapping heads all models are completely self-contained and have an adjustable stroke length of 2.0 maximum these tools are ideal for low-cost automated hole tapping in applications where high precision is not required also excellent for thread-chasing operations bant-a-matic® series clutch-type tapping head no 0 to 1/4 m1.6 to m6 capacity steel .25 hp 20 kw clutch-type tapping units may be used for both blind and thru-hole applications jaw-type units are for use in thru-hole applications only model 8246-d8-2 par-a-matic® series clutch-type tapping head no 0 to 1/2 m1.6 to m12 capacity steel .50 hp 37 kw model 8256-c8-2 par-a-matic® series jaw-type tapping head no 10 to 5/16 m4.5 to m8 capacity steel .50 hp 37 kw model 8257-a8 model identification tool series 4 bant-a-matic 5 par-a-matic valve-in-head control tapping head 6 clutch type engineering generation spindle speed stroke length 8 2 5 6 8 2 5 7 tapping head 7 jaw type c c 8 2 14 a tap chuck options jaw type only a 5/16 cap b 1/4 cap c 5/8 cap 20

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pneumatic self-feed tappers specifications stroke free length speed in mm rpm bant-a-matic series clutch-type 8246-d8-2 2.0 51 900 8246-d5-2 2.0 51 550 models par-a-matic series clutch-type 8256-c14-2 2.0 51 1,450 8256-c8-2 2.0 51 850 8256-c5-2 2.0 51 500 par-a-matic series jaw-type 8257-a14 2.0 51 1,450 8257-a8 2.0 51 850 8257-a5 2.0 51 500 nominal tap capacities stnls steel mild aluminum type 304 steel brass #8 m6 1/4 m6 #10 m5 5/16 m8 1/2 m12 #10 m5 5/16 m8 1/2 m12 1/4 m6 1/4 m6 1/4 m6 3/8 1/2 m12 1/4 m6 3/8 9/16 m14 hand tap capacity no 0-1/4 m1.6-m6 air consp working speed 3/cycle l/cycle ft 15 42 sound level dba 77 gear reduction double double double double double double double double no 0 1/2 m1.6-m12 2.3 65 74 no 10-5/16 m4.5-m8 2.3 65 74 consumption in cubic feet during a typical 6 second cycle time tapping capacity is limited by the capacity of the tap chuck note performance data given at 90 psi 6.2 bar air pressure tool series bant-a-matic par-a-matic air inlet 1/8 npt male 1/4 npt male control ports 1/8 npt female 1/8 npt female spindle thread 1/2 20 male 1/2 20 male recommended hose size 1/4 id 5/16 id recommended operating pressure 90 psi 6.2 bar 90 psi 6.2 bar standard equipment bant-a-matic series clutch-type · 42123-1 tapping head attachment · 37431-2 no 0-no 10 cap rubber flex collet insert · 37431-3 no 10-1/4 cap rubber flex collet insert · 47884 pneumatic controls interface kits · necessary wrenches par-a-matic series clutch-type · 38021-4 tapping head attachment · 38036 no 0-1/4 cap rubber flex collet insert · 38036-1 no 1/4-1/2 cap rubber flex collet insert · 47884 pneumatic controls interface kits · necessary wrenches par-a-matic series jaw-type · 34000-1 tapping head attachment · 31432 no 10-5/16 cap tap chuck see model identification chart on page 20 · 31427 no 1/4 cap tap chuck see model identification chart on page 20 · 32060 no 1/4-5/8 cap tap chuck see model identification chart on page 20 · 47884 pneumatic controls interface kits · necessary wrenches contains 2 6045 90° street elbows and 2 9600 pilot bleeder valves accessories at extra cost bant-a-matic series · 40301 hydraulic checks · 39486 flange bracket · 39485-1 foot bracket · 45053 h.d foot bracket · 36042 split-block clamp · service kits par-a-matic series · 40591 hydraulic checks · 38877 flange bracket · 38875-1 foot bracket · 45055 h.d foot bracket · 35283 split-block clamp · service kits 21

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p. 24

pneumatic lead screw tappers 2200 series 1/2 m12 capacity steel .62 hp 47 kw model 8655-b24-a the aro lead screw tapper is designed for precision hole tapping in medium and high-production machining applications the tool is air operated and is fully automatic with a built-in pressure-operated valve manual controls and remote control ports for starting and retracting installation is easy with only simple pneumatic circuitry required it can be used individually or in conjunction with other pneumatic and electric self-feed tools and machine components additional features/benefits include­ · repeatable tapping depth accuracy of ±.005 127 mm · stroke length is fully adjustable from 3/16 4.8 mm minimum to 2.0 50.8 mm maximum for use in a wide range of setups · a built-in no-hole sensing system prolongs tap life by automatically retracting the spindle when a pilot hole is missing or when excessive misalignment exists · modular tool design enables easy servicing of air motor and gearing and offers convenient economical speed and lead screw conversions as job requirements change · compact size requires less machine space for increased design flexibility · fixed-position foot mounting requires no additional mounting hardware while providing added rigidity · a wide selection of models is available for both american and metric threads · twin and multi-spindle tapping heads are available for close-center machining requirements model identification 8 free speed 5 175 rpm 6 325 rpm 7 600 rpm 8 1300 rpm 9 2400 rpm 6 5 5 b 2 4 a thread pitch or lead indicator tool generation 22

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p. 25

pneumatic lead screw tappers specifications steel sae 1213 aluminum 2024-t4 3/8 to 1/2 m10 to m12 7/16 to 5/8 m10 to m16 175 rpm 8655-b11-a 8655-b12-a 8655-b13-a 8655 b14-a 8655-b16-a 8655-b18-a 8655-b20-a 8655-b24-a 8655-b27-a 8655-b28-a 8655-b32-a 8655-b36-a 8655-b40-a 8655-b44-a 8655-b48-a 8655-b56-a nominal tap capacities 1/4 to 7/16 no 8 to 1/4 no 2 to no 10 m6 to m10 m4 to m6 m2 to m5 5/16 to 1/2 m8 to m12 325 rpm 8656-b11-a 8656-b12-a 8656-b13-a 8656-b14-a 8656-b16-a 8656-b18-a 8656-b20-a 8656-b24-a 8656-b27-a 8656-b28-a 8656-b32-a 8656-b36-a 8656-b40-a 8656-b44-a 8656-b48-a 8656-b56-a 1/4 to 5/16 m6 to m8 models 600 rpm 8657-b11-a 8657-b12-a 8657-b13-a 8657-b14-a 8657-b16-a 8657-b18-a 8657-b20-a 8657 b24-a 8657-b27-a 8657-b28-a 8657-b32-a 8657-b36-a 8657-b40-a 8657-b44-a 8657-b48-a 8657-b56-a no 2 to 5/16 m2 to m8 1,300 rpm 8658-b13-a 8658-b14-a 8658-b16-a 8658-b18-a 8658-b20-a 8658 b24-a 8658-b27-a 8658-b28-a 8658-b32-a 8658-b36-a 8658-b40-a 8658-b44-a 8658-b48-a 8658-b56-a lead screw no 2 to no 10 and m2 to m5 nut assembly 2,400 rpm 8659-b24-a 8659 b27-a 8659-b28-a 8659-b32-a 8659-b36-a 8659-b40-a 8659-b44-a 8659-b48-a 8659-b56-a no 2 to no 8 m2 to m4 air consp working speed ft3/cycle l/cycle std chuck capacity in mm free speed 11 12 13 14 16 18 american 20 thread 24 pitch 27 t.p.i 28 32 36 40 44 48 56 .40 .45 .50 metric .60 thread .70 lead .75 mm .80 1.00 1.25 1.50 45453-11 45453-12 45453-13 45453-14 45453-16 45453-18 45453-20 45453-24 45453-27 45453-28 45453-32 45453-36 45453-40 45453-44 45453-48 45453-56 3.0 85 no 0 to 1/2 m4.5 to m12 metric pitches available consult factory air inlet 3/8 npt female control ports 1/8 npt female spindle thread no 1 morse taper female american hand tap size no 0 no 6 no 8 no 10 no 12 no 14 1/4 5/16 3/8 7/16 1/2 9/16 5/8 1/8 s.s pipe 1/8 l.s pipe recommended hose size 1/2 id recommended operating pressure 90 psi 6.2 bar collet id in mm .141 3.58 .168 4.27 .194 4.93 .220 5.59 .255 6.48 .318 8.08 .381 9.68 .323 8.20 .367 9.32 .429 10.90 .480 12.19 .313 7.95 .438 11.12 special tappers available featuring high duty cycle twin and multi-spindle heads and left hand threads consult factory +consumption in cubic feet during a typical 6 second cycle time note performance data given at 90 psi 6.2 bar air pressure standard equipment · 41376 tap chuck no 0-1/2 m4.5 m12 cap · necessary wrenches accessories at extra cost · 44889 floating tap chuck no 0-5/8 m1.6 m16 cap · 44890 collets for 44889 chuck 44889 floating tap chuck no 1 morse taper metric hand tap size m1.6 m6 m4 m4.5 m5 m6 m7 m8 m10 m12 m14 m16 provides parallel float up to 0.030 0.76 mm to ensure the tap being driven aligns properly with the drilled hole order the desired size 44890 collet separately from the chart at the right collet no 44890-1 44890-2 44890-3 44890-4 44890-5 44890-6 44890-7 44890-8 44890-9 44890-10 44890-11 44890-12 44890-13 s.s small shank l.s large shank 23

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