SF20 NB Fine Shaft 500mm Length Linear System Motion Ball Diameter - 2 1/4 inch (2.25") or artificial resin

or artificial resin

Thrust ball bearings are built for specific applications:

When space is tight but strength still matters

Inner Ring Diameter (bore): 50mm

TC1018 is much thinner

SF20 NB Fine Shaft 500mm Length Linear System Motion Ball Diameter - 2 1/4 inch (2.25") or artificial resinSF20 NB Fine Shaft Standard Shaft: NB Linear Systems 500mm (19. 7" inch) Length 20mm Diameter Shaft SF20 NB Fine Shaft Standard, 20mm Diameter x 500mm Long Shaft, the diversification of industrial needs for rationalization, energy conservation, lower cost, Fine Shaft is mass produced to maintain the highest quality and accuracy while lowering component cost. Name: SF20 NB Shaft NB Linear Systems Shaft Diameter: 20mm Length: 500mm Quality: One Shaft