Cylindrical Rollers

Cylindrical Rollers

Precision cylindrical rollers are mainly used as bearing rolling elements to transmit torque and reduce friction. They can also server as precision shafts or as pricision loacting pins. Needle Rollers are used in automotive transmissions, universal joints, front wheeldrive, constant velocity joints water pump bearings, roller clutches, rollerized cam lifters, rocker arms, cam rollers, starter drives and as pins and dowels for various applications.
Specifications of Needle Rollers.

Materials Standard: - AISI 52100 or SAE 52100 bearing quality chrome steel.
Hardness  Standard: - HRC 58 to 64
Surface Finish Standard: - OD Ground and Lapped to surface finish of 0.020 um Ra Max
Alternative: Surface finish of 0.025 um Ra Max is available on request.
Tolerance  
Outside diameter (mm) --> Standard: +0.000 to - 0.005 [G5]
Length ---> Standard: +0.000 to - 0.500
Applications of Needle Rollers
Needle Rollers are available special end forms provide performance benifits for specific
Kinds of applications as shown below.
I-Type BR (Rounded ends)
II- Type BP (Flat Underground ends)
III- Type BPM (Flat Ground ends)