Martin
SF-BB

Martin QD Idler Bushing, 3-1/8 in Barrel Dia, 3-7/8 in Bolt Circle, 4-5/8 in Flange Dia, 1/2 in Flange Thickness, 3/8 x 2 in (Cap Screw)/5/16-18 x 5/16 in (Set Screw) Screw, Ball Bearing, 4860 lb Radial Load, 5 in Overall Length, Ductile Iron

• Size SF bushing
• They are equipped with two electric motor grade, permanently lubricated ball bearings, mounted on a precision shoulder bolt
• Installation is made by slipping the threaded shaft through a hole bored in support structure and tightening the locking nut
• Sheaves, sprockets or other products can be removed without dismounting the idler bushing
• Designed for conventional mounting or reverse mounting
• Bushings have a flange

• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/Martin_E-BB_Catalog.pdf