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Inner Ring for Needle Roller Bearings

IR・IS1・LR / SKF (Official website) / Listed on page 118 of the document

Inner rings for needle roller bearings with bore diameters of 5 to 45 mm. Numerous types with varying widths and designs are listed.

Last verified: (date the content was verified against the source document)

Inner Ring for Needle Roller Bearings on page 118 of SKF "針状ころ軸受 (SKF 製品カタログ・技術資料抜粋)"
Source: SKF「針状ころ軸受 (SKF 製品カタログ・技術資料抜粋)」page 118
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Specifications

Inner diameter d 5–45 mm
Outer diameter D 8–55 mm
Width B 8–40 mm
Mass 0.063～16.5 kg

How to choose Bearing Accessories

Points to check when selecting, with the values for this product (Inner Ring for Needle Roller Bearings).

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

    This product: Inner diameter d 5–45 mm

    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

    This product: Width B 8–40 mm

    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.

About Bearing Accessories and all products

Description

Outer diameter F, width B, chamfer dimensions r and r1,2, and mass are listed by dimension. Designation numbers follow the format IR d x F x B, and some include the suffixes IS1 or LR.

FAQ

Q. What are the bore, outer diameter, and width ranges for needle roller bearing inner rings (IR, IS1, and LR series)?
A. The bore diameter d is 5 to 45 mm, the outer diameter D is 8 to 55 mm, and the width B is 8 to 40 mm.
Q. What is the designation number format for needle roller bearing inner rings (IR, IS1, and LR series)?
A. Designation numbers follow the format IR d x F x B. Some types include the suffixes IS1 or LR.
Q. What is the mass of needle roller bearing inner rings (IR, IS1, and LR series)?
A. The mass is 0.063 to 16.5 kg.

Written by AI based on the content of the source documents.

Source documents

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