The footprint of 4 posts vise: 150*70mm
Bench installation holes distance: 125mm
Clamping diameters: 1, 1.1, 1.12, 1.18, 1.21, 1.25, 1.5 inches (7 sizes come with the vise)
Thrust bearing： Model No. 51102
4pc Stainless bolts (2pc for your spare)
2pc High tensile M12X90mm bolts with nuts and spring washers and washers (to be used for installation onto your bench)
4pc 5mm emergency use washers (if any thrust bearing fails)
About 51102 thrust bearings:
4 thrust bearings will significantly reduce the friction from nut tightening, therefore the same torque on nuts will generate far greater downward force.
Each thrust bearing can statically bear a maximum axial load force of 16600N ≈1.69 tons.
Thrust bearings will damage if bearing balls were not sitting in the running grooves! And the ball bearings bracket will immediately deform and causing bearing balls to pop out.
Don’t worry! Thrust bearings will be sold by us for $5 ea or $20 for a set of 4.
Each package comes with 4pc of 5mm thick washers for emergency use in case your thrust bearing fails.
About the cheater bar:
During the prototype, we noticed some gunsmiths would mount our vise onto a big cheater bar. You are welcome to do so but you will have to replace the thrust bearings with washers instead. Thrust bearings will get damaged if bearing balls were not sitting in the running grooves! When a cheater bar is used, the bearing will hardly sit level and causing balls to derail and pop out!