Base mounting tabs: (4) x 0.5"D, mounting hardware not included. Any other questions please do not hesitate in contacting firstname.lastname@example.org or 616-396-2063 Ext 3.
Typical Working load is 4,400 pounds which equates to ~104 ft-lb of torque. If you need additional clamp strength then select the Yost 750-DI vise (constructed from heavy duty ductile iron) with a clamp strength of 9,000 pounds or ~180 ft-lb.
1. Are both lock downs loosened sufficiently to allow the carriage bolts and inner plate to separate from the underside of the outer base? 2. Is there a bur on either the inner base plate or on the underside of the outer base causing it to bind? 3. In the end, we can replace inner base plate to solve the problem.
Not sure abut extended warranty. Factory warranty is 1 year, and you only have 7 days to discover that the unit does not comply with its specifications.
4 3/4 to 4 7/8
the mounting holes are 1/2" diameter, and are 4-3/4" apart center to center.