Product Details
The IKO Shell Type Needle Roller Bearing is designed with a 2-1/8 inch bore, a 2-1/2 inch outer diameter, and a 1.500 inch width, referenced as part number BA3424ZOH. This bearing consists of an accurately drawn outer ring made from a thin special steel plate, needle rollers, and can be configured with or without a retainer. Known for having the smallest sectional height and weight among all needle roller bearings, it also features relatively high load ratings. The version with a retainer is suited for high-speed applications as it allows for precise guidance of the rollers with the retainer and thrust ring. It is important to note that these bearings do not come pre-packed with lubricant; users must ensure proper lubrication is applied during use. Typically, Shell Type Needle Roller Bearings are utilized with shafts that do not have inner rings. Recommendations for optimal performance include a shaft surface finish of 0.2µm RA or less and a hardness of HRC 58 to 64. If these conditions cannot be met, the use of IKO inner rings is advised. For accuracy, it is important to acknowledge that the thin cross section of the outer ring may lead to deformation during heat treatment, making direct measurement on the outer ring inappropriate; instead, users should rely on standard mounting dimensions for shaft and housing diameters. The tolerance for the outer ring width is specified as +0 to -0.20 mm.
