Thrust cylindrical roller bearings (K 811, K 812, K 893, K 894 series)
スラスト円筒ころ軸受 / SKF (Official website) / Listed on page 15 of the document
Thrust cylindrical roller bearings with bore diameters of 70 to 630 mm. Composed of shaft washers, housing washers and universal washers in combination, with dimensions and load ratings listed for each part number.
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Specifications
| Inner diameter d | 70〜630 mm |
|---|---|
| Outer diameter D | 95〜750 mm |
| Basic dynamic load rating Cr | 135〜10600 kN |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Thrust cylindrical roller bearings (K 811, K 812, K 893, K 894 series)).
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1. Bore and housing bore dimensions
This product: Inner diameter d 70〜630 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 135〜10600 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
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
Configuration combining bearing body (K 811/K 812 series and K 893/K 894 series) with shaft washer (WS), housing washer (GS) and universal washer (LS). Lists principal dimensions, basic dynamic and static load ratings, fatigue load limit, minimum load factor, limiting speed and reference speed, and mass.
Features
- Wide dimensional range with bore diameter d of 70 to 630 mm
- Cylindrical rollers with thrust cage construction
- Individual designation numbers listed for shaft washers and housing washers
FAQ
- Q. What are the bore and outside diameter ranges for the SKF thrust cylindrical roller bearing K 811, K 812, K 893 and K 894 series?
- A. Bore diameter d is 70 to 630 mm and outside diameter D is 95 to 750 mm.
- Q. What is the basic dynamic load rating Cr of the SKF thrust cylindrical roller bearings?
- A. The basic dynamic load rating Cr is 135 to 10600 kN.
- Q. How are SKF thrust cylindrical roller bearings configured in use?
- A. They are configured by combining the bearing body (K 811/K 812 series and K 893/K 894 series) with a shaft washer (WS), housing washer (GS) and universal washer (LS).
- Q. What values are listed in the product information for SKF thrust cylindrical roller bearings?
- A. Principal dimensions, basic dynamic and static load ratings, fatigue load limit, minimum load factor, limiting speed and reference speed, and mass are listed.
- Q. What is the cage construction of SKF thrust cylindrical roller bearings as a feature?
- A. The construction is cylindrical rollers with a thrust cage.
Written by AI based on the content of the source documents.
Source documents
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Catalog
スラスト円筒ころ軸受
20 pages Open page 15
Found on: https://azuma-eg.com/catalogue/
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