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MK3 3-Jaw Self-Contained Air Power Chucks & Accessories
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MK3 3-Jaw Self-Contained Air Power Chucks
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| Type D Spindles | Type A Spindles | ||||
| Chuck Size | Adapter Mount Model No. | Spindle Size | 3-Jaw Model No. | Spindle Size | 3-Jaw Model No. |
| 6-1⁄2" | 9760-01710 | D-3 | 9762-21710 | - | - |
| D-4 | 9762-31710 | - | - | ||
| D-5 | 9762-41710 | A-5 | 9761-31710 | ||
| D-6 | 9762-51710 | A-6 | - | ||
| 8" | 9760-02110 | D-4 | 9762-32110 | - | - |
| D-5 | 9762-42110 | A-5 | 9761-32110 | ||
| D-6 | 9762-52110 | A-6 | 9761-42110 | ||
| 10" | 9760-02610 | D-5 | 9762-42610 | - | - |
| D-6 | 9762-52610 | A-6 | 9761-42610 | ||
| D-8 | 9762-62610 | A-8 | 9761-52610 | ||
| 12" | 9760-03210 | D-8 | 9762-63210 | A-8 | 9761-53210 |
| D-11 | 9762-73210 | A-11 | 9761-63210 | ||
| 14" | 9760-03510 | D-8 | 9762-63510 | A-8 | 9761-53510 |
| D-11 | 9762-73510 | A-11 | 9761-63510 | ||
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Table Mount, “L” Type Mounts and Special Mounts available upon
request.
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Dimensional and Technical Data (in inch)
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| Chuck Size | A | B | C | D | E | F | Mtg Hole | 6-Hole B.C. | Wt. Lbs | Max rpm* | Jaw Travel | Ext. Gripping Range Std. Hard Jaws | Int. Gripping Range Std. Hard Jaws | Force** |
| 6-1⁄2 | 6.5 | 9.45 | 5.06 | 1.5 | 4.921 | 0.24 | M10 | 5.91 | 50 | 3000 | 0.18 | .63 to 7.09 | 2.80 to 7.80 | 6,930 |
| 8 | 7.87 | 10.63 | 5.16 | 2.05 | 6.102 | 0.24 | M10 | 7.09 | 68 | 2500 | 0.18 | .98 to 8.62 | 3.58 to 9.58 | 10,230 |
| 10 | 9.84 | 12.2 | 5.73 | 2.56 | 7.283 | 0.24 | M10 | 8.27 | 100 | 2000 | 0.197 | 1.22 to 10.71 | 4.45 to 11.39 | 15,180 |
| 12-1⁄2 | 12.4 | 13.98 | 5.79 | 3.54 | 8.858 | 0.26 | M10 | 9.84 | 144 | 1500 | 0.197 | 1.57 to 13.35 | 5.31 to 14.69 | 18,080 |
| 14 | 13.78 | 15.35 | 7.28 | 5.59 | 10 | 0.26 | M12 | 11 | 200 | 1300 | 0.236 | 3.50 to 14.60 | 7.30 to 15.90 | 18,960 |
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*Max. RPM at 85 PSI with standard hard top jaws. Consult factory
for increased RPM rating.
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Lever Control Unit - Part Number 1157-12800 This unit is essential in order to operate MK3 Self-Contained Power Chucks. It is designed to be interlocked with the machine spindle so that the chuck cannot be actuated while the spindle is under power. Care must be taken not to actuate the chuck while the spindle is decelerating. Units are supplied complete with pressure gage, pressure regulator, oil mist lubricator, air filter and lines with fittings. Unit is operated by air and 110 volt/60 cycle (24 volt DC on request). |
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Top Jaws for MK3 Self-Contained Chucks — 1/16" x 90º Serrations
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 Type 611 - Hardened and ground reversible jaws with serrated gripping faces. (Supplied in sets of 3 for 3 jaw chucks only) Type 612 - Soft blank jaws, case hardening quality steel. (Supplied as single units only) |
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Dimensional Data
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| Chuck Size | Jaw Type | Part Number | A | B | C | D | F | Bolt Size | Step Height |
| 6-1⁄2" | 611 | 8130-17611 | 2.56" | 1.56" | 1.18" | .475" | .67" | M8 | .39" |
| 6-1⁄2" | 612 | 8140-17512 | 2.75" | 1.50" | 1.25" | .475" | .787" | M8 | - |
| 8"/10" | 611 | 8130-21611 | 3.00" | 1.97" | 1.57" | .670" | .75" | M12 | .47" |
| 8"/10" | 612 | 2860-21512 | 3.50" | 2.00" | 1.50" | .670" | 1.00" | M12 | - |
| 12"/14" | 611 | 8130-31611 | 4.92" | "2.36" | 2.36" | .830" | 1.25" | M16 | .55" |
| 12"/14" | 612 | 2860-32512 | 4.50" | 2.50" | 2.00" | .830" | 1.25" | M16 | - |