1.Product Overview The THK BF30 is a square-type fixed-end or supported-side ball screw support unit designed for a 30mm shaft diameter, utilizing a deep-groove ball bearing to stabilize rotating machine components 👉 Get a quote within 24 hours for your project 2.Technical Specifications Model: BF 30 Inner Diameter (ID): 30 mm Outer Diameter (OD): 32 mm Width: 128 mm Structure: Ball screw side support Cage: Steel cage Clearance Class: C3 enlarged radial clearance Design: