Bison Steel Body Independent Lathe Chuck - 3-1/2" Plain Back Mount 7-850-0300

7-850-0300 4-Jaw (Solid) Independent Chuck Steel Body Plain Back 3-1/2in, Type 4306-85, Bison-Bial





Over 50 years of Quality European Manufacturing have made BISON the number one choice for Lathe Chucks. Whether scroll, independent or collet, these chucks are not just a exceptional value. Offered with direct spindle mounting or special application back plates, Bison Chucks are easy to install and maintain.

When it comes time for a New Chuck, Give the Guys at Ajax a call. And Let us help you get Your Lathe UP and Turning!

Ajax Sales and Service: 1 (800) 543-5998



Technical Details

Chuck Diameter D in 3.5

Chuck Body Steel

Chuck Jaws solid

Maximum Speed RPM 4000

Weight lb 3.4

Load Capacity lb 33

Hole Diameter d in .9843

Max Hole Enlargement d1 in 0.9843

E in 2.4409

F in 2.8346

C in .1969

H in 1.5748

h1 in .6693

Chuck Mounting Bolts Thread 1/4 - 20

Chuck Mounting Bolts L 1-1/4

Chuck Mounting Bolts Qty 4



d1 min in 0.118

d2 max in 3.346

d3 Chuck Thru Hole in 0.984

Manufacturer Model Number 4304



Accessories and Parts

7-889-003 Wrench for 3 and 4in Scroll/Indep. Chuck

7-890-103 Hard Solid Rev.Jaws, 3in, 4 Pc Set

7-890-1030 Hard Solid Rev.Jaw, 3in, 1 Pc

7-890-603 Operating Screw-Part for 3" Indep.Chuck

7-897-498 Mounting Bolt 1/4-20 x 1-1/4" Long

7-909-3045C Fixture Adapters,Soft - 3in & 4in

7-890-703 Thrust Bearings for 3in Indep.Chuck

Spare parts and jaw options are readily available, an Ajax Lathe Chuck Technician is available to assist you.