SKF Bearings (Dimension Table and Retaining Ring Compatibility Table)
Overview of bearing mounting dimensions, calculation factors, and compatible retaining rings (SW and DIN 471), covering the 120 to 240 mm shaft diameter range.
Last verified: (date the content was verified against the source document)
Specifications
| Inner diameter d | 120〜240 mm |
|---|---|
| Outer diameter D | 141〜236 mm |
| Outer ring width C | 71.2〜128.2 mm |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (SKF Bearings (Dimension Table and Retaining Ring Compatibility Table)).
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1. Bore and housing bore dimensions
This product: Inner diameter d 120〜240 mmSelect the bore diameter d to match the shaft seat, the outside diameter D to match the housing bore, and the width B to suit the installation space. Main dimensions are standardized in ISO and JIS dimension series, so interchangeable products can be found by boundary dimension designation. For tapered roller bearings, also check the assembled width T; for thrust bearings, also check the height H.
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2. Dynamic load rating based on life calculation
The basic dynamic load rating Cr is the reference value for calculating rated life. Verify that the required life is met using the equivalent load during operation and the rotational speed. For ball bearings, life is proportional to the cube of the load ratio, so providing load margin greatly extends life.
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3. Margin for static and shock loads
The basic static load rating C0r is the allowable standard for permanent deformation generated at the rolling elements and raceways under stationary or low-speed conditions. For applications with oscillating motion or shock loads, confirm that a static safety factor against the maximum load is secured using C0r.
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4. Operating speed and lubrication method
The limiting speed differs by lubrication method, and separate values are given for grease lubrication and oil lubrication. Confirm that the normal operating speed does not exceed the limiting value, and in high-speed ranges also consider cage material and precision grade. The reference speed can also be consulted as a thermal guideline.
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5. Precision grade and internal clearance
Precision grades (P0, P6, P5, etc.) indicate rotational accuracy and dimensional accuracy; for high-precision applications such as machine tool spindles, select higher grades. Internal clearance (C2, CN, C3, etc.) is selected to allow for changes caused by interference fit and temperature differences during operation.
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6. Materials and lubrication suited to the environment
For corrosive, high-temperature, vacuum, or clean environments, select specifications such as rings and rolling elements made of stainless steel or ceramics, or solid lubricants and fluorine grease for vacuum use. Check the operating temperature range, low dust generation, and whether food-grade grease registration applies against the application conditions.
This guide was written by AI based on the listed products' documents and specification items.
Description
Dimension table showing bearing mounting dimensions (d, D1, C1, C2, b, r, etc.) and calculation factors (Ca1, Ca2, ra, kr), with compatible retaining ring designation numbers listed alongside. Retaining rings must be ordered separately and are not supplied by SKF. Includes a note on recommended shaft shoulder diameter when the bearing is subjected to axial load.
FAQ
- Q. Where can I find the mounting dimensions and calculation factors for bearings with a bore of 120 to 240 mm in SKF Bearings (Dimension Table and Retaining Ring Compatibility Table)?
- A. Mounting dimensions (d, D1, C1, C2, b, r, etc.) and calculation factors (Ca1, Ca2, ra, kr) are listed in the dimension table. The coverage range is the 120 to 240 mm shaft diameter range.
- Q. Which retaining rings are compatible with the bearings listed in SKF Bearings (Dimension Table and Retaining Ring Compatibility Table)?
- A. Compatible retaining ring designation numbers are listed alongside. The applicable retaining rings are SW type and DIN 471.
- Q. Can retaining rings for SKF Bearings (Dimension Table and Retaining Ring Compatibility Table) be purchased from SKF?
- A. Retaining rings must be ordered separately and are not supplied by SKF.
- Q. What is the recommended shaft shoulder diameter for SKF Bearings (Dimension Table and Retaining Ring Compatibility Table) when subjected to axial load?
- A. A note on the recommended shaft shoulder diameter for axial load applications is included. Specific values are not contained in the product information, so please refer to the note in the dimension table.
Written by AI based on the content of the source documents.
Source documents
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Catalog
SKF 円筒ころ軸受 (カタログ抜粋)
106 pages Found on: https://azuma-eg.com/catalogue/
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