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Pratt Burnerd/Atlas
3 Jaw
234 & 235 Series Self-Centering Scroll
Chucks
Super-Precision, 3 Pinion Non-Adjustable
• Two-year warranty |
| Self-Centering High Quality 3 Jaw Universal Chucks | |||||||
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Chuck Size |
Adapter Mounting Model No. |
Type A Spindle Short Taper |
Type D Spindle Camlock |
Type L Spindle Long Taper |
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| Size | Model No. | Size | Model No. | Size | Model No. | ||
| 5 | 0523500 | - | - | D-3 | 0523520 | - | - |
| 5 | - | - | - | D-4 | 0523521 | - | - |
| 6 | 0623500 | A-5 | 0623510 | D-3 | 0623520 | L-00 | 0623531 |
| 6 | - | - | - | D-4 | 0623521 | L-0 | 0623532 |
| 8 | 0823500 | A-5 | 0823510 | D-3 | 0823520 | L-00 | 0823531 |
| 8 | - | A-6 | 0823511 | D-4 | 0823521 | L-0 | 0823532 |
| 8 | - | - | - | D-5 | 0823522 | - | - |
| 8 | - | - | - | D-6 | 0823523 | L-1 | 0823533 |
| 10 | 1023500 | A-5 | 1023510 | D-4 | 1023521 | L-00 | 1023531 |
| 10 | - | A-6 | 1023511 | D-6 | 1023523 | L-0 | 1023532 |
| 10 | - | A-8 | 1023512 | D-8 | 1023524 | L-1 | 1023533 |
| 12 | 1223500 | A-6 | 1223511 | D-6 | 1223523 | L-0 | 1223532 |
| 12 | - | A-8 | 1223512 | D-8 | 1223524 | L-1 | 1223533 |
| 12 | - | - | - | D-11 | 1223525 | L-2 | 1223534 |
| 15 | 1523400 | A-8 | 1523412 | D-6 | 1523423 | L-1 | 1523433 |
| 15 | - | A-11 | 1523413 | D-8 | 1523424 | L-2 | 1523434 |
| 15 | - | - | - | D-11 | 1523425 | - | |
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Larger diameter chucks available, contact QCS Workholding for
price and delivery.
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| Dimensional Information | |||||||||||||
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Dimensional Data for 235 Series Adapter Mounting Self-Centering
Chucks
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| Gripping Capacity | |||||||||||||
| Chuck Size | A | B | C | D | E | F | G | H | K | Lbs. Wt. | Min. | Max. | Max. RPM |
| 5" | 4.92" | 3.740" | 1.38" | 2.31" | 1.375" | .15" | 4.25" | 6.75" | M8 | 10.5 | 3/16" | 4" | 3600 |
| 6" | 6.30" | 4.921" | 1.81" | 2.53" | 1.59" | .15" | 5.51" | 7.75" | M10 | 18 | 3/16" | 5" | 3400 |
| 8" | 7.87" | 6.299" | 2.16" | 2.87" | 1.75" | .15" | 6.93" | 9.75" | M10 | 31.5 | 3/16" | 6-1⁄2" | 3100 |
| 10" | 9.84" | 7.875" | 2.99" | 3.31" | 2.13" | .19" | 8.82" | 12.25" | M12 | 59 | 1/2" | 8" | 2700 |
| 12" | 12.20" | 10.236" | 4.05" | 3.56" | 2.28" | .19" | 11.26" | 14.25" | M12 | 89 | 3/4" | 10" | 2200 |
| 15" | 15.74" | 12.990" | 5.35" | 3.96" | 2.75" | .19" | 14.25" | 16.25" | M16 | 150 | 1-1⁄2" | 13" | 1800 |
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Mounting Plates For 234 and 235 Series Chucks
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Mounting plates are precision machined to suit the spindle nose
of your machine. Plates are stocked semi-finished. If ordering
plate separately, specify the model number of your chuck so that
PBA can finish machine the adapter to suit your Pratt Burnerd
chuck.
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Type D Camlock Mountings
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| Spindle | 5" | 6" | 8" | 10" | 12" | 15" |
| D-3 | 0503020 | 0603020 | 0803020 | 1003020 | - | - |
| D-4 | 0503021 | 0603021 | 0803021 | 1003021 | - | - |
| D-5 | - | - | 0803022 | 1003022 | - | - |
| D-6 | - | - | 0803023 | 1003023 | 12303023 | 1503023 |
| D-8 | - | - | - | 1003024 | 1203024 | 1503024 |
| D-11 | - | - | - | - | 1203025 | 1503025 |
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Type A American Standard Short Taper A-1 & A-2 Spindles
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| Spindle | 5" | 6" | 8" | 10" | 12" | 15" |
| A-5 | 0503010 | 0603010 | 0803010 | 1003010 | - | - |
| A-6 | - | - | 0803011 | 1003011 | 1203011 | 1503011 |
| A-8 | - | - | - | 1003012 | 1203012 | 1503012 |
| A-11 | - | - | - | - | 1203013 | 1503013 |
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Type L American Standard Long Taper Key Drive Spindles
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| Spindle | 5" | 6" | 8" | 10" | 12" | 15" |
| L-00 | 0503031 | 0603031 | 0803031 | 1003031 | - | - |
| L-0 | - | 0603032 | 0803032 | 1003032 | 1203032 | - |
| L-1 | - | - | 0803033 | 1003033 | 1203033 | 1503033 |
| L-2 | - | - | - | 1003034 | 1203034 | 1503034 |
| L-3 | - | - | - | - | - | 1503035 |
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Threaded Spindles
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| Spindle | 5" | 6" | 8" | 10" | ||
| 1-1⁄2"-8 | 0503041 | 0603041 | 0803041 | - | ||
| 1-3⁄4"-8 | 0503042 | 0603042 | 0803042 | - | ||
| 2-1⁄4"-8 | 0503043 | 0603043 | 0803043 | 1003043 | ||
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Special adapter plates available upon request. Specify chuck
number and spindle nose specifications.
For spindle nose specifications |
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