SF20 NB Fine Shaft 500mm Length Linear System Motion Ball Diameter - 2 1/4 inch (2.25") TC1018 is much thinner

TC1018 is much thinner

Inner Ring Diameter (bore): 50mm

BK0910 Needle Roller Bearing

4-Pack LME25UU Linear Motion Bearings

When space is tight but strength still matters

SF20 NB Fine Shaft 500mm Length Linear System Motion Ball Diameter - 2 1/4 inch (2.25") TC1018 is much thinnerSF20 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