Workholding Cat PRINT

Jaw Presetting Fixture Order number
1009-07090
for use with 6", 8", 10", 12", 15",
18", and 20" sizes Standard Bore
and Big Bore Models Quick Change
Jaw Power Chucks.
➀ Insert last two digits for Master Jaw type...
Example 9141-21723...Indicates 1.5mm x 60°:
Master Jaw Required
Use 23 for 1.5mm x 60° Japanese type.
Use 26 for Acme Serration.
Use 10 for 1/16 X 90° Serrations.
Use 07 for Am. Std Tongue & Groove.
Use 27 for Square Serration.
30 www.pratt-burnerd.co.uk
Pratt Burnerd Quick Change
2 Jaw Power Chucks
Constant Grip High Speed
Open Centre Power Chucks
■ ±.12µm repeatability
■ 4-Point adjusting feature in the chuck body allows you to true up to virtually
zero Increase Soft jaw life by using the adjustment feature instead of skim
cutting soft jaws as often. 6 points on 380mm chucks and larger
■ High RPM ... up to 6,000 using standard top jaws ... without loss of
gripping force, due to internally counter-balanced design
■ Quick change base 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
■ Master jaws available in 1.5mm x 60° (Japanese type), 1/16" x 90°, Acme
serration and square serration, American standard tongue and groove
■ Utilize existing top tooling by selecting style of master jaws from 1.5 x 60,
1.5 x 90, Am. Std. Acme, Am. Std tongue & groove and square serrations or
substitute mono block jaws. Sets can be mixed styles
■ Quick conversion to an expanding mandrel, ref. page 34
■ Large bore capacity (bore can be sealed for VTL use... page 42 and 43)
■ Utilise 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 PBI can supply chuck sleeve pre-threaded on request, at a
nominal charge
■ Optional jaw setting fixture for presetting top jaws off the machine for the
next job, while the machine is still running. A real timesaver!
■ Sizes 165mm to 305mm diameters...other sizes available on request
■ Twelve month warranty
Chuck Mount Jaw Sleeve Through Collet Pad Tooling Operating Grip Wt
Size (D)Direct (I)Indirect RPM Model No. ➀ Stroke Stroke Hole Bar Capacity Hole Size Force lbs/f Force lbs/f (lbs)
165 A2-4(I) 6000 9141-217__ 3.5 16 42 38 5/16" UNC 16 47 16
165 A2-5(D) 6000 9141-317__ 3.5 16 42 38 5/16" UNC 16 47 16
165 A2-6(I) 6000 9141-417__ 3.5 16 42 38 5/16" UNC 16 47 16
210 A2-5(I) 5500 9141-321__ 3.5 16 52 50 5/16" UNC 24 66 28
210 A2-6(D) 5500 9141-421__ 3.5 16 52 50 5/16" UNC 24 66 28
210 A2-8(I) 5500 9141-521__ 3.5 16 52 50 5/16" UNC 24 66 28
254 A2-6(I) 5000 9141-426__ 4 18.5 65 63 3/8" UNC 32 88 42
254 A2-8(D) 5000 9141-526__ 4 18.5 65 63 3/8" UNC 32 88 42
305 A2-8(I) 4200 9141-531__ 4 18.5 90 76 3/8" UNC 44 121 68
305 A2-11(D) 4200 9141-631__ 4 18.5 90 76 3/8" UNC 44 121 68
HOW TO ORDER: State quantity, model number of chuck, machine make & model, and shipping instructions.