Spherical Roller Bearing Assemblies with Adapter Sleeves
22208 EK ほか（取り外しスリーブ AH・AHX・AOH 型付き） / SKF (Official website)
Spherical roller bearings with withdrawal sleeves. Series covering bore diameters of approximately 35 to 900 mm are listed together.
Last verified: (date the content was verified against the source document)
Specifications
| Inner diameter d | 35～1000 mm |
|---|---|
| Outer diameter D | 80～1 500 mm |
| Width B | 23～462 mm |
| Mass | 0.6～4 800 kg |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Spherical Roller Bearing Assemblies with Adapter Sleeves).
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1. Bore and housing bore dimensions
This product: Inner diameter d 35～1000 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
Spherical roller bearing assemblies combining withdrawal sleeves (AH, AHX, AOH types). Sleeve width (B2) before pressing into the bearing bore and other dimensions are shown. Includes SKF Explorer bearings and SKF energy efficient bearings.
Features
- Easy removal with withdrawal sleeves
- SKF Explorer bearings
- Includes energy efficient bearings (E2)
Applications
- Main shaft support in industrial machinery
- Machines requiring removal during maintenance
FAQ
- Q. Which machines can 22208 EK and other spherical roller bearings with withdrawal sleeves be used for main shaft support?
- A. They can be used for main shaft support in industrial machinery. They are also suitable for machines that require removal during maintenance.
- Q. How does removal become easier for spherical roller bearings with withdrawal sleeves?
- A. The sleeve-combined structure makes removal work easier.
- Q. What is the range of target dimensions and mass for spherical roller bearings with withdrawal sleeves?
- A. Bore diameter d is 35 to 1000 mm, outside diameter D is 80 to 1 500 mm, width B is 23 to 462 mm, and mass is 0.6 to 4 800 kg.
- Q. Which bearings are included in spherical roller bearings with withdrawal sleeves AH, AHX, and AOH types?
- A. They include SKF Explorer bearings and SKF energy efficient bearings (E2).
- Q. Where is the sleeve width to be checked before assembling spherical roller bearings with withdrawal sleeves shown?
- A. The sleeve width (B2) before pressing into the bearing bore and other dimensions are shown.
Written by AI based on the content of the source documents.
Source documents
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Catalog
SKF 球面ころ軸受 (製品データ表 8章抜粋)
78 pages Found on: https://azuma-eg.com/catalogue/
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