Bison Front Mount Scroll Chuck - 5" Plain Mount 7-812-0500

• Can be mounted directly on 3/6 slot rotary tables or on a base plate when the rotary table has 3/6 or 4/8 T-slots • Base plates are designed for use with all rotary tables and other devices where back mounting chucks cannot be used • These chucks can also be mounted to a rough machined backplate, but will require machining of bolt hole patterns and projections for finished assembly

Technical Specifications Top Jaw Height 1.575 Mount Recess Depth .158 Mount Recess 3.740 Size of Mounting Bolts (3) 5/16-18 x 2.17 Mounting Bolt Radius 4.252 Number of Jaws 3 Class Lathe Chucks & Accessories Chuck Size 5 Hole Size 1.259 Model Number 8120500 Weight 14 lbs Type Front Mounting Semi-Steel Self-Centering Scroll Chuck Body Width 2.204 Brand Name Bison Mount Plain Back

ĦDesigned for use with Rotary Tables where Back Mounting Chucks cannot be used ĦSemi-Steel Body ĦTwo-piece hard reversible jaws ĦScroll and jaws are hardened and ground

Chuck Diameter D in 5

Weight lb 9.3 Hole Diameter d in 1.2598 F in 4.2520 E H7 in 3.7402 C in .1575 H in 2.205 h in 1.575 Mounting Bolts, Thread G 5/16-18 x 2.17 # of Bolts 3 Back Thread M M8

Clamping Range d1 (min-max) .118 - 1.97 Clamping Range d2 (min-max) 2.05 - 3.78 Clamping Range d3 (min-max) 3.74 - 4.92 Clamping Range d4 (min-max) 1.34 - 2.99 Clamping Range d5 (min-max) 2.95 - 4.65