Roll Neck Thrust Bearing (FC Type)
ロールネックスラスト軸受 / JTEKT Corporation (Official website)
Four-row cylindrical roller bearing used as roll neck thrust bearing in hot and cold rolling mills.
Last verified: (date the content was verified against the source document)
Specifications
| Outer diameter D | 980～1220 mm |
|---|---|
| Basic dynamic load rating Cr | 20700～29600 kN |
| Mass | 1830～2990 kg |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (Roll Neck Thrust Bearing (FC Type)).
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1. Bore and housing bore dimensions
Select 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 20700～29600 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
Large-sized bearing series used as roll neck thrust bearing in hot and cold rolling mills.
Features
- Capable of handling heavy loads
Applications
- Hot rolling mills
- Cold rolling mills
FAQ
- Q. What types of rolling mills can the Roll Neck Thrust Bearing (FC Type) be used in?
- A. It is used as a roll neck thrust bearing in hot and cold rolling mills. Applications are hot rolling mills and cold rolling mills.
- Q. What are the ranges of outer diameter D, basic dynamic load rating Cr, and mass for the Roll Neck Thrust Bearing (FC Type)?
- A. Outer diameter D is 980 to 1220 mm, basic dynamic load rating Cr is 20700 to 29600 kN, and mass is 1830 to 2990 kg.
- Q. What are the features and bearing type of the Roll Neck Thrust Bearing (FC Type)?
- A. It is a four-row cylindrical roller bearing that supports heavy loads. It is offered as a large-sized bearing series.
Written by AI based on the content of the source documents.
Source documents
- Catalog 圧延機ロールネック用軸受
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