EXSEV®-WS
EXSEV® / JTEKT Corporation (Official website) / Listed on page 11 of the document
A vacuum-compatible bearing combining 350℃ heat resistance and load capacity through tungsten disulfide-based solid lubrication.
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Specifications
| Atmospheric pressure | Atmospheric pressure to 10-5 Pa |
|---|---|
| Operating Temperature Range | -100～350 ℃ |
| Permissible rotational speed | dmn value < 7200, max. 500 min-1 |
| Permissible radial load | Approx. 5% or less of basic dynamic load rating |
EXSEV® model comparison
Compare 9 models in the same series by specification.
| Model | Operating Temperature Range | Atmospheric pressure | Permissible rotational speed | Permissible radial load | Cleanliness level |
|---|---|---|---|---|---|
| EXSEV®-EX | -50～260 ℃ | Atmospheric pressure to 10-5 Pa | dmn value < 72000 min-1 | — | Class 100 |
| EXSEV®-EX（グリース） | -50～260 ℃ | Atmospheric pressure to 10-5 Pa | — | — | Class 100 |
| EXSEV®-FA | -100～200 ℃ | Atmospheric pressure to 10-5 Pa | dmn value < 18000, max. 1000 min-1 | Approx. 1% or less of basic dynamic load rating | Class 1000 |
| EXSEV®-MG | -200～350 ℃ | 10-5～10-10 Pa | dmn value < 18000, max. 1000 min-1 | Approx. 3% or less of basic dynamic load rating | — |
| EXSEV®-MO | -100～300 ℃ | Atmospheric pressure to 10-5 Pa | dmn value < 18000, max. 1000 min-1 | Approx. 3% or less of basic dynamic load rating | — |
| EXSEV®-PN | -30～300 ℃ | Atmospheric pressure to 10-5 Pa | dmn value < 18000, max. 1000 min-1 | Approx. 3% or less of basic dynamic load rating | — |
| EXSEV®-SK | -30～120 ℃ | — | — | — | — |
| EXSEV®-WS This product | -100～350 ℃ | Atmospheric pressure to 10-5 Pa | dmn value < 7200, max. 500 min-1 | Approx. 5% or less of basic dynamic load rating | — |
| EXSEV®-XT | 200～300 ℃ | Atmospheric pressure to 10-5 Pa | dmn value < 7200 min-1 | — | — |
How to choose Rolling Bearings
Points to check when selecting, with the values for this product (EXSEV®-WS).
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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
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
This product: Operating Temperature Range -100～350 ℃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
Suitable for vacuum environments requiring heat resistance and load-bearing capacity, supporting high temperatures with a tungsten disulfide-based solid lubricant.
Features
- 350℃ compatible
- Load capacity
Applications
- Semiconductor manufacturing equipment
- Liquid crystal manufacturing equipment
- Vacuum deposition equipment
- PDP manufacturing equipment
FAQ
- Q. Up to what temperature can EXSEV®-WS be used?
- A. The operating temperature range is -100 to 350 ℃.
- Q. In what vacuum environments can EXSEV®-WS be used?
- A. It is compatible with atmospheric pressure to 10-5 Pa.
- Q. What are the permissible rotational speed and permissible radial load of EXSEV®-WS?
- A. The permissible rotational speed is dmn value < 7200, with a maximum of 500 min-1. The permissible radial load is approximately 5% or less of the basic dynamic load rating.
- Q. What kinds of equipment is EXSEV®-WS used in?
- A. It is used in semiconductor manufacturing equipment, liquid crystal manufacturing equipment, vacuum deposition equipment, and PDP manufacturing equipment.
- Q. What is the lubrication method and what are the features of EXSEV®-WS?
- A. It is a vacuum-compatible bearing that uses a tungsten disulfide-based solid lubricant to support high temperatures, combining 350℃ compatibility and load capacity.
Written by AI based on the content of the source documents.
Source documents
- Catalog 特殊環境用 EXSEV 商品ガイド Open page 11
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