EXSEV-WS Heat-Resistant Tungsten Disulfide Bearing
SE系（SE606ZZSTM6 WS 等） / JTEKT Corporation (Official website)
A vacuum-compatible radial ball bearing lubricated by a tungsten disulfide separator, combining 350 ℃ heat resistance with load capacity.
Last verified: (date the content was verified against the source document)
Specifications
| Maximum Operating Temperature | 350 ℃ |
|---|---|
| Inner diameter d | 6～40 mm |
| Outer diameter D | 17～80 mm |
How to choose Plain Bearings
Points to check when selecting, with the values for this product (EXSEV-WS Heat-Resistant Tungsten Disulfide Bearing).
-
1. Select dimensions that fit the shaft diameter and housing bore
This product: Inner diameter d 6～40 mmMatch the inside diameter d to the shaft diameter and the outside diameter D to the housing bore diameter. Listed products have inside diameters of 3 to 70 mm and outside diameters of 5 to 80 mm. When press-fitting, allow for the bearing shrinking during installation, which reduces the inside diameter. Also check the shaft and housing tolerances recommended by the manufacturer.
-
2. Verify bearing pressure and speed using the PV value
Confirm that the PV value, which is the product of bearing pressure (load divided by projected area) and sliding speed, does not exceed the limiting PV value. The limiting PV value of listed products is 400 MPa·m/min. The individual limits for bearing pressure alone (3 to 10 MPa) and for sliding speed alone (150 m/min) must also be satisfied.
-
3. Determine the length according to the load
Increasing the length L increases the projected area and lowers the bearing pressure. However, if the length is too great, shaft deflection tends to concentrate the load at the ends, causing edge loading. Listed products have lengths of 3 to 60 mm, so select a length that keeps the bearing pressure within the limit.
-
4. Select a material suited to the operating environment
For underwater or chemical-liquid use, choose a material with chemical resistance and wear resistance in liquid. Where static electricity is a concern, choose a conductive material. Wear of the mating material also varies with the material and hardness of the mating shaft. If antistatic performance is required, also check the volume resistivity.
-
5. Check temperature and operating clearance
Resin bearings expand as temperature rises, which reduces clearance. In addition to the maximum operating temperature (300 to 350 °C) and continuous operating temperature (260 °C), maintain the recommended minimum operating clearance (0.095 to 0.195 mm).
-
6. Match the lubrication method to the maintenance conditions
Whether a bearing can run without lubrication, or requires oil-impregnated or external lubrication, affects maintenance effort and the risk of contamination in the surroundings. Greaseless types are suitable for food machinery and clean environments. For use in vacuum, also check the usable vacuum level and low outgassing performance.
This guide was written by AI based on the listed products' documents and specification items.
Description
Lubricated by a separator made of a tungsten disulfide-based self-lubricating composite material, it emits little outgassing and can be used in vacuum.
Features
- 350 ℃ compatible
- Vacuum and clean-environment compatible
- Low outgassing
Applications
- Semiconductor manufacturing equipment
- Liquid crystal display manufacturing equipment
- Vacuum deposition equipment
- PDP manufacturing equipment
FAQ
- Q. In what temperature environments can the EXSEV-WS Heat-Resistant Tungsten Disulfide Bearing be used?
- A. The maximum operating temperature is 350 ℃.
- Q. What sizes are available for SE-series EXSEV-WS bearings such as SE606ZZSTM6 WS?
- A. The bore diameter d ranges from 6 to 40 mm, and the outside diameter D ranges from 17 to 80 mm.
- Q. Can the EXSEV-WS Heat-Resistant Tungsten Disulfide Bearing be used in vacuum or in semiconductor and liquid crystal manufacturing equipment?
- A. It is vacuum and clean-environment compatible, emits little outgassing, and can be used in vacuum. Its main applications are semiconductor manufacturing equipment, liquid crystal display manufacturing equipment, vacuum deposition equipment, and PDP manufacturing equipment.
- Q. How is the EXSEV-WS Heat-Resistant Tungsten Disulfide Bearing lubricated?
- A. It is lubricated by a separator made of a tungsten disulfide-based self-lubricating composite material.
Written by AI based on the content of the source documents.
Source documents
Similar products (other manufacturers)
Plain Bearings products, ordered by similarity of specifications and applications.
-
Plain Bearings
Bearee™ M Liner Bearing (ML Type)
Resin slit liner bearing with bore sizes from 4 mm to 70 mm. A plain bearing installed between shaft and housing, with recommended operating clearance dimensions shown.
NTN Corporation
-
Plain Bearings
Bearee™ Resin Plain Bearing Unit (FL3700)
A unit incorporating Bearee FL3700 resin plain bearings. Can be used not only in air but also in water and chemical solutions, and operates without lubrication and maintenance-free.
NTN Corporation
-
Rolling Bearings
Sealed Single-Row Deep Groove Ball Bearings
A series of sealed deep groove ball bearings with bore diameters from 3 to 15 mm, covering small to medium sizes. Specifications are listed for each seal type, such as Z and RS.
SKF
-
Rolling Bearings
Sealed Double-Row Angular Contact Ball Bearings (2Z, 2RS1)
Sealed double-row angular contact ball bearings with bore diameters of 10 to 75 mm. Shielded and sealed versions are listed.
SKF
-
Springs
Super Spring Kit
A kit containing springs from the K, D, and DS series. A selection set for prototype design and jig and fixture maintenance.
KS Industries Co., Ltd.
-
Pins & Shafts
Super Shaft
Precision SUS304 stainless steel shaft, diameter 0.1–6.0 mm, length 2–65 mm. Available for immediate shipment in small lot packs.
KS Industries Co., Ltd.
More products from JTEKT Corporation
See all →-
Plain Bearings
EXSEV-XT High-Temperature Grease-Sealed Bearing
Heat-resistant radial ball bearing sealed with fluorine grease usable up to 300℃. Used in semiconductor and liquid crystal manufacturing equipment.
JTEKT Corporation
-
Plain Bearings
EXSEV-MG Silver Ion-Plated Bearing
A radial ball bearing with silver ion plating on the balls, suitable for ultra-high vacuum (10-10 Pa) and ultra-high temperature environments.
JTEKT Corporation
-
Plain Bearings
EXSEV-PN 300℃ Heat-Resistant Bearing
Heat-resistant radial ball bearing usable up to 300℃ in vacuum, using solid lubricants such as molybdenum disulfide and a PEEK resin cage.
JTEKT Corporation
-
Plain Bearings
EXSEV-MO Molybdenum Disulfide Coated Cage Bearing
A 300℃-rated heat-resistant radial ball bearing with a stainless steel cage baked with molybdenum disulfide.
JTEKT Corporation
-
Deep Groove Ball Bearings
Deep Groove Ball Bearing
Single-row ball bearing that accepts radial load and axial load in both directions. Suitable for high-speed rotation and low-vibration applications. Dimension tables cover bore diameters from 100 to 1420 mm.
JTEKT Corporation
-
Angular Contact Ball Bearings
Angular Contact Ball Bearing
Angular contact ball bearings that accept axial loads in one or both directions depending on contact angle. Available as single row and back-to-back or face-to-face combinations (DB, DF), with bore diameters of approximately 100 to 300 mm.
JTEKT Corporation