Forklift Mast Bearing SR55D40-2 55×70.5mm – Chrome Steel Roller

Forklift Mast Roller Bearing SR55D40-2 — 55×21.4×40×30×70.5mm Chrome Steel Mast Guide Roller Bearing

This forklift mast roller bearing model SR55D40-2 is a Kingstream OEM mast guide roller bearing for forklift trucks in manufacturing, agriculture, mining, and material handling. Precision machined from chrome steel with long-life low-noise design. Specifications: overall diameter 55mm, inner diameter 21.4mm, outer diameter 40mm, thickness 30mm, total length 70.5mm. Grease or oil lubrication. Precision grades: P0, P6. ISO9001:2008 certified. 0.8kg with 15×15×10cm packaging. OEM/ODM service available. Samples available on request. Kingstream OEM for forklift fleet mast roller bearing replacement.

MAST ROLLER FUNCTION: The SR55D40-2 bearing is a specialized mast guide roller designed for forklift mast channel applications. The bearing mounts on a shaft pin through the 21.4mm inner bore, with the 40mm outer diameter rolling surface contacting the mast channel. The 70.5mm overall length provides the correct spacing within the mast channel assembly. These bearings reduce friction between mast sections during lifting and lowering. Chrome steel construction provides high hardness and wear resistance for continuous heavy-duty operation. Low-noise design suitable for indoor warehouse environments. For forklift fleet mast bearing maintenance, contact us. Kingstream OEM.

INSTALLATION: Remove the mast stop bolts. Extract the inner mast section from the outer mast. Remove the worn SR55D40-2 bearings from the mast channels. Clean the channel contact surfaces. Install the new bearings with the correct shim washers to achieve proper mast channel clearance. Reassemble the mast. Test lift operation for smooth, quiet extension. For forklift fleet mast roller replacement, contact us. Kingstream OEM.

Technical Specifications

OEM/ODM available. Kingstream OEM. Contact us.