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Bearing Accessories

Bearing accessories are peripheral components used to correctly mount, secure and protect bearings on shafts and housings. They include parts that form the raceway of a bearing, such as the inner ring of a needle roller bearing, as well as fixing clips that prevent loosening of lock nuts, and rubber vibration-damping rings inserted between the outer ring of a Y-bearing and the housing bore to reduce vibration and noise. Inner rings are used where the raceway cannot be machined directly on the shaft, eliminating the need for shaft hardening and grinding. Vibration-damping rings also help absorb thermal expansion of the shaft and misalignment (axial offset). Fixing clips are fastened with bolts to prevent lock nuts from loosening. They are used around bearings in conveyors and general industrial machinery.

How to choose Bearing Accessories

  1. 1. Select the bore to suit the shaft or bearing

    The inner diameter d indicates the matching shaft or bearing bore, ranging from 5 to 45 mm in the listed products. For inner rings, check the shaft diameter and fit tolerance, and select a part number that matches the bearing dimensions. Mismatched dimensions can cause creep (slippage at the fitted surface) or assembly defects.

  2. 2. Verify outer diameter and width against mating parts

    The outer diameter D ranges from 8 to 55 mm and the width B from 8 to 40 mm. For needle roller bearing inner rings, the outer diameter forms the roller raceway, so select it to match the inscribed circle diameter of the bearing, and select the width to suit the bearing width and the axial mounting space. Parts with the same bore often differ in width or type, so verify by part number.

  3. 3. Select vibration-damping rings by bearing outer diameter

    Rubber vibration-damping rings are fitted between the outer ring of a Y-bearing and the housing bore, so the applicable bearing outer diameter (40 mm for the listed product) must match the Y-bearing being used. Also confirm the applicable housing type, such as a sheet-steel pressed plummer block housing.

  4. 4. Check the bolt diameter of fixing clips

    Fixing clips that prevent lock nuts from loosening are supplied with hex bolts and spring washers in some cases. Confirm that the applicable bolt size matches the nominal number of the HM lock nut to be combined, and determine in advance whether threaded holes must be machined.

  5. 5. Confirm rubber material and operating temperature

    Vibration-damping rings made of NBR (nitrile rubber) are limited in operating temperature range due to the properties of the rubber. Consider the ambient temperature and heat generated by the bearing, and confirm that conditions fall within the operating temperature range. In environments exposed to oil or chemicals, also verify material compatibility.

This guide was written by AI based on the listed products' documents and specification items. Check each manufacturer's documents before adopting.