Spherical Roller Bearings (d 900～1250mm)
8.1 球面ころ軸受 / SKF (Official website)
Large spherical roller bearings with bore diameters of 900～1250mm. Available with cylindrical and tapered bores, designed for heavy loads and large machinery requiring self-alignment.
Last verified: (date the content was verified against the source document)
Specifications
| Inner diameter d | 900～1250 mm |
|---|---|
| Outer diameter D | 1090～1750 mm |
| Width B | 165～420 mm |
| Basic dynamic load rating Cr | 1180～9000 kN |
| Basic static load rating C0r | 1400～54000 kN |
8.1 球面ころ軸受 model comparison
Compare 2 models in the same series by specification.
| Model | Inner diameter d | Outer diameter D | Width B |
|---|---|---|---|
| 球面ころ軸受 (d 1320～1800mm) | 1320～1800 mm | 1600～2180 mm | 280～375 mm |
| 球面ころ軸受 (d 900～1250mm) This product | 900～1250 mm | 1090～1750 mm | 165～420 mm |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Spherical Roller Bearings (d 900～1250mm)).
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1. Bore and housing bore dimensions
This product: Inner diameter d 900～1250 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
This product: Basic dynamic load rating Cr 1180～9000 kNThe 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
This product: Basic static load rating C0r 1400～54000 kNThe 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 for large spherical roller bearings with bore diameters of 900～1250mm. Lists basic dynamic load rating, fatigue load limit, limiting speed, mass and other data. Some bearings are SKF Explorer bearings.
Features
- Spherical rollers providing self-alignment capability
- Choice of cylindrical or tapered bore
- Includes SKF Explorer bearings
Applications
- Large machinery
- Heavy load applications
FAQ
- Q. What are the bore diameter, outside diameter and width ranges for spherical roller bearings (d 900～1250mm)?
- A. Bore diameter d is 900～1250 mm, outside diameter D is 1090～1750 mm, and width B is 165～420 mm.
- Q. Can spherical roller bearings (d 900～1250mm) be used in applications requiring self-alignment?
- A. Yes. They feature spherical rollers with self-alignment capability and are intended for large machinery that requires alignment.
- Q. What bore types are available for spherical roller bearings (d 900～1250mm)?
- A. Cylindrical and tapered bores are available.
- Q. What are the load ratings of spherical roller bearings (d 900～1250mm)?
- A. Basic dynamic load rating Cr is 1180～9000 kN, and basic static load rating C0r is 1400～54000 kN.
- Q. Are SKF Explorer bearings available among spherical roller bearings (d 900～1250mm)?
- A. Some are SKF Explorer bearings.
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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