QCS Workholding LLC
10635 Tower Oaks Blvd.  Ste. E
Houston  TX   77070
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Constant Grip Quick-Change and Non-Quick Change Power Chucks 
 

Closed Center Power Chucks Designed for Vertical Turning Lathes


 

Jaw Presetting Fixture Order Number 1009-07090 for use with 6", 8", 10", 12", 15", 18" and 20" sizes Standard Bore and King Bore Models Quick Change Jaw Power Chucks.


 
  • One Year Warranty
  • ±.0005" Repeatability
  • 3-Point Adjusting Feature in the chuck body permits indicating in to zero. Increase Soft Jaw Life by using adjustment feature. Reduce or eliminate re-boring of Soft Jaws.
  • Close center design with chip ejecting discharge chutes in the chuck body face reducing build-up to near zero.
  • High RPM ... up to 5,000 using standard top jaws ... without loss of gripping force, due to internally counter-balanced design.
  • Quick Change Master Jaws, 2 sets supplied with each chuck permits offline pre-assembly of top tooling for next job reducing traditional setup time by 95%.
  • SAFE Visual Indicator shows when Master Jaws are in the unlocked mode.
  • Utilize existing top tooling by selecting style of master jaws from 1.5 x 60, 1/16 x 90, Am. Std. Acme, Am. Std Tongue & Groove and Square Serrations or substitute mono block jaws. Sets can be mixed styles.
  • Doubles as collet chuck as master jaws have keyed radius in front that accept standard W & S collet pads. Eliminate time wasted on switching over to collet chuck.
  • Utilize the machine's existing actuating cylinder - including Japanese types.
  • Easy Installation - removable blank sleeve in the chuck allows the customer to bore and thread the sleeve of the chuck to match existing drawtube of drawbar. PBA can supply chuck sleeve prethreaded on request, at a nominal charge.
  • Optional Jaw Setting Fixture (as shown) for presetting top jaws off the machine for the next job, while the machine is still running. A real timesaver!
  • Sizes 6", 8", 10", 12", 15", 18", 20", and 24" diameters.
Chuck Size Mount (D)Direct (I)Indirect RPM Model No.** Jaw Stroke Sleeve Stroke Collet Pad Bar Capacity Tooling Hole Size Operating Force lbs/f Grip Force lbs/f Wt (lbs)
Quick Change Jaw VTL Chucks
10.0" A2-6(I) 5000 9101-426__ .160" .730" 2.5" 3/8" UNC 7,200 19,800 82
10.0" A2-8(D) 5000 9101-526__ .160" .730" 2.5" 3/8" UNC 7,200 19,800 82
12.0" A2-8(I) 4200 9101-531__ .160" .730" 3.0" 3/8" UNC 9,900 27,000 150
12.0" A2-11(D) 4200 9101-631__ .160" .730" 3.0" 3/8" UNC 9,900 27,000 150
15.0" A2-8(I) 3000 9101-538__ .200" .790" 4.5" 3/8" UNC 13,500 31,500 280
15.0" A2-11(D) 3000 9101-638__ .200" .790" 4.5" 3/8" UNC 13,500 31,500 280
18.0" A2-8(I) 2500 9101-546__ .236" .984" 5.5" 1/2" UNC 15,500 38,250 375
18.0" A2-11(I) 2500 9101-646__ .236" .984" 5.5" 1/2" UNC 15,500 38,250 375
20.0" A2-11(I) 2500 9101-650__ .236" .984" 5.5" 1/2" UNC 15,500 38,250 550
24.0" A2-11(I) 1800 9101-660__ .315" .984" 6.25" 1/2" UNC 20,700 38,250 760
24.0" A2-15(I) 1800 9101-760__ .315" .984" 6.25" 1/2" UNC 20,700 38,250 760
Non-Quick Change Jaw VTL Chucks
10.0" A2-6(I) 5000 9111-426__ .160" .730" 2.5" 3/8" UNC 7,200 19,800 82
10.0" A2-8(D) 5000 9111-526__ .160" .730" 2.5" 3/8" UNC 7,200 19,800 82
12.0" A2-8(I) 4200 9111-531__ .160" .730" 3.0" 3/8" UNC 9,900 27,000 150
12.0" A2-11(D) 4200 9111-631__ .160" .730" 3.0" 3/8" UNC 9,900 27,000 150
15.0" A2-8(I) 3000 9111-538__ .200" .790" 4.5" 3/8" UNC 13,500 31,500 280
15.0" A2-11(D) 3000 9111-638__ .200" .790" 4.5" 3/8" UNC 13,500 31,500 280
18.0" A2-8(I) 2500 9111-546__ .236" .984" 5.5" 1/2" UNC 15,500 38,250 375
18.0" A2-11(I) 2500 9111-646__ .236" .984" 5.5" 1/2" UNC 15,500 38,250 375
20.0" A2-11(I) 2500 9111-650__ .236" .984" 5.5Z 1/2" UNC 15,500 38,250 550
24.0" A2-11(I) 1800 9111-660__ .315" .984" 6.25" 1/2" UNC 20,700 38,250 760
24.0" A2-15(I) 1800 9111-760__ .315" .984" 6.25" 1/2" UNC 20,700 38,250 760
** Insert last two digits for Master Jaw type...Example 9101-42623...Indicates 1.5mm x 60°: Master Jaw Required
Use 23 for 1.5mm x 60° Japanese type.** Use 07 for Am. Std Tongue & Groove. Use 10 for 1/16 X 90° Serrations.*
Use 26 for Acme Serration. Use 27 for Square Serration.

Dimensional Data
Dimensional and Performance Data (in inch)
            E  
Chuck Size A B C D F Max Min G
10-A6 10 5.511 5.669 5.25 1.181 3.268 2.087 M12x35(6)
10-A8 10 5.905 6.063 6.75 1.181 3.268 2.087 M16x150(3)
12-A8 12 6.614 6.771 6.75 1.181 4.291 2.362 M16x40(6)
12-A11 12 6.614 6.771 9.25 1.181 4.291 2.362 M20x110(3)
15-A8 15 6.929 7.086 6.75 1.693 5 3.228 M16x35(6)
15-A11 15 6.929 7.086 9.25 1.693 5 3.228 M20x180(6)
18-A8 18 7.72 7.78 6.75 1.693 6.772 4.527 M16x40(6)
18-A11 18 7.72 7.78 9.25 1.693 6.772 4.527 M20x35(6)
20-A11 19.7 7.362 7.499 9.25 2.362 8.09 5.059 M20x45(6)
24-A11 24 7.56 7.72 9.25 2.362 10.09 5.77 M20x45(6)
24-A15 24 7.56 7.72 13 2.362 10.09 5.77 7/8-9x
Dimensional and Performance Data (in inch)
        L    
Chuck Size H J K Min Max S W
10-A6 M12x35 1⁄2 UNFx3⁄4 4.53 1.42 2.15 0.63 1.57
10-A8 M12x35 1⁄2 UNFx3⁄4 4.53 1.3 2.03 0.63 1.57
12-A8 M14x45 1⁄2 UNFx3⁄4 5.71 1.3 2.03 0.71 1.81
12-A11 M14x45 1⁄2 UNFx3⁄4 5.71 1.38 2.16 0.71 1.81
15-A8 M20x55 1⁄2 UNFx3⁄4 473/789 1.38 2.16 0.866 2.36
15-A11 M20x55 1⁄2 UNFx3⁄4 473/789 1.38 2.36 0.866 2.36
18-A8 M20x55 1⁄2 UNFx3⁄4 433/630 1.38 2.36 0.984 2.36
18-A11 M20x55 1⁄2 UNFx3⁄4 433/630 1.38 2.36 0.984 2.36
20-A11 M20x35 1⁄2 UNFx3⁄4 705/994 1.38 3.36 0.984 2.36
24-A11 M20x35 1⁄2 UNFx3⁄4 *** 1.57 2.56 0.984 2.36
24-A15 M20x35 1⁄2 UNFx3⁄4 *** 1.57 2.56 0.984 2.36
(T) Draw Tube Thread Blank
1. Dimensions listed are with 1.5 x 60° Japanese type master jaws.
Some dimensions will vary using other Master Jaw types such as Acme, 1/16" x 90° or Am. Std. Tongue & Groove.
2. Chuck is at mid stroke with master jaws flush with the body O.D.
3. UNC mounting bolts available upon request.

Replacement Jaws
Mono block jaws are extremely accurate solid one piece design ideal for dedicated jobs, and will allow you to work closer to the chuck face, due to no jaw bolt obstructions. For longer service Mono Block Jaws are made from a nitride hardening material to allow hardening after forming without major distortion.
See our product catalog for dimensions.
Extra Sets of Master Jaws for Quick Change Jaw Power Chucks
  10" 12" 15" 18" 20" 24"
Master Jaw Type - 15mm " 60° Fine Serration (Japanese Type)
 8130-26623 8130-31623 8130-40623 8130-46623 8130-50623** 8130-61623**
1/16 " 90° Fine serration (European Type)
 8130-26610 8130-31610 8130-38610* 8130-46610* 8130-50610* 8130-61610*
Acme Serration
 8130-26626 8130-31626 8130-40626 8130-46626 8130-50626 8130-61626
American Std. Tongue & Groove
 8130-26607 8130-31607 8130-40607 8130-46607 8130-50607 8130-61607
Square Serration
 8130-26627 8130-31627 8130-40627 8130-46627 8130-50627 8130-61627
Mono Block Jaw ***
 8130-26601 8130-31601 8130-38601 8130-46601 8130-50601 8130-61601
** 20 and 24 diameter chucks supplied with 3mm x 60° serrations * 15, 18, 20 and 24 diameter chucks supplied with 3/32 x 90° serrations

 


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