they provide stability and traction on most surfaces while protecting your knees from impacts
The necessary tilt is securely held by the built-in
The Whittet-Higgins PWT-21 is a precision bearing lockwasher with precision-ground parallel faces that keep the assembly square to the threaded shaft
The Whittet-Higgins NH-12 is a heavy-duty inch-series bearing locknut machined from carbon steel for high axial-load applications
Bore Diameter 17 mm Outside Diameter 40 mm Overall Width 12 mm Bore Type Cylindrical Closure Type Double Sealed Row Type & Fill Slot 1 Snap Ring Included With Snap Ring Internal Clearance C3 Operating Temperature Range -40 to +210 °F Dynamic Load Capacity 2237 lbf Static Load Capacity 1068 lbf Precision Rating ABEC 3 Seal Type Contacting seal Finish/Coating Uncoated Bearing Material Bearing steel Cage Material Bearing steel Inner Ring Width 12 mm Outer Ring Width 12 mm Fillet Radius 0
FAG B71910-E-2RSD-T-P4S-UM Spindle Bearing - 50 mm ID, 72 mm OD, 12 mm Width ratcheting guy strand cutter they provide stability and tractionSpindle Bearing FAG spindle bearings (also called super precision angular contact ball bearings) are engineered for machine tool spindles and other high precision, high speed applications. They feature optimized internal geometry, super precision tolerances, and are often supplied as universally matchable sets for stiff spindle arrangements.