Boyar Schultz surface grinder 6-18 and 6-12 Replacement parts list for Challenger surface grinder 3325 Wrench mounting 4000 adapter wheel 3086 Nut Outer 3612-B Bearing Front 3187 Wheel Arbor Adapter 3553-A Spring Pre-load 3613-B Bearing Rear 3703-C Apron Dust 3580 Cover Screw 3845-B Cover Dust 3534-A Screw Crossfeed 3535-A Bushing Screw 110901 Elevating Screw with Bushing 107042 Elevating Screw with Bushing Spindle Bearing 3612-B and 3613-B | 3732 Nut Bushing 3529-B Gear Table 1/2" Shaft 3529-A Gear Table 5/8" shaft 3530 Rack Table 3536-B Screw Elevating 3537-A Elevating Screw Bushing 3538-A Gear Bevel 3611-A Bearing 3608 Bearing Needle 105610 Spindle Coupling with Spider 105610S Spider 105590 Crossfeed Screw with Bushing 110900 Crossfeed Screw with Bushing |