Product Details
Bearings Limited HK0408 needle bearing is a drawn cup, caged, metric needle roller bearing with a bore size of 3.988 mm. Needle roller bearings are a type of roller bearing classified as either radial or thrust based on the load direction they support, with certain variants slightly exceeding the ISO-defined needle roller size range. They are available as drawn cup, solid radial bearings, and thrust needle bearings, with options for caged or full complement configurations. The drawn cup outer rings are constructed from carefully selected alloy steel sheet, which is surface-hardened after precise pressing to achieve a unique structure. The cage is designed to accurately guide the rollers at the pitch diameter, while its hardened surface reduces frictional torque and enhances both rigidity and wear resistance.
