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25" BISON 3 Jaw  SET-TRU Chuck Forged Steel  7-866-2500

25" BISON 3 Jaw SET-TRU Chuck Forged Steel 7-866-2500

Item# 7-866-2500
Regular price: $13,995.10
Sale price: $10,674.94
Availability: In Stock

Product Description

BISON 25" 3 Jaw (2 Piece) SET-TRU Chuck Forged Steel with Fine Adjustment 7-866-2500

Bison SET-TRU Chucks can give your lathe the accuracy of a tool room lathe. Once dialed in you can count on .0003" total indicator run out (radial) and .0001 total indicator run out (axial).

Set-Tru Scroll Chucks have 3 pinions, or 3 positions for the chuck wrench. Compare with other well-known chucks which only use a single pinion design. Bison's finest product.

This well respected brand of chucks has been the long accepted standard for high quality European work holding technology. At your request an Ajax Chuck & Jaw Technician can assest in selection of a Bison Chuck to fit your application. Ajax sales and service 1 (800) 543-5998

Maximum RPM 1000

Hole Size 9.921

Weight 630 lbs

.0004" Accuracy

Scroll & jaws hardened and ground

Three hardened and ground pinions

4 Micro adjustment screws provide .0004 T.I.R. repeatability

Extremely high gripping concentricity

2-Piece top jaws are American Standard Tongue & Groove.


F in 13
H in 5.905
h in 3.425
C in 1.18
M Thread 3/4 x 10
M Qty 6
N Thread M18 x 1
N Qty 8

Clamping Range d1 (min-max) 1.18 - 13.19
Clamping Range d2 (min-max) 4.72 - 22.44
Clamping Range d3 (min-max) 7.87 - 24.80
Clamping Range d4 (min-max) 5.51 - 23.23
Clamping Range d5 (min-max) 8.27 - 26.18

Each chuck is provided with:

1 Set of hard master jaws
1 Set of hard top reversible jaws
1 Chuck wrench
1 Set of mounting bolts
1 Set of fine adjustment screws
2 Hex keys
Eye bolts for chuck sizes 15-3/4 and larger

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