Shaft Coupling

Coupling is a core component that transmits power and motion
from the driving shaft to the driven part while absorbing misalignment
and any possible factors that could reduce efficiency of machines
(e.g. vibration, noise, electric current, etc.)
SOH Series Go to SOH Series(Index)
Oldham Coupling_VESPEL Spacer / For Vacuum, High-temperature application

Structure & Material
| Structure | Material | Surface Treatment |
|---|---|---|
| Hub | Stainless Steel | Electro-polishing |
| Spacer | VESPEL (PI) | – |
| Screw | STS304 | – |
Product Features & Application
| Minimized Outgas | ☆ |
|---|---|
| High Torque (Durability) | ○ |
| Torsional Stiffness | △ |
| Chemical Resistance | ○ |
| Misalignment Absorption | ☆ |
| Insulation of Electric Current | ☆ |
| Minimized Reaction Force | ☆ |
| Permissible Temperature | -20℃ ~ 200℃ |
Application : Semi-conductor machine, OLED vacuum machine, High-temperature applications, cleanroom facilities.
Features of SOHSV Series
- Excellent for high-temperature applications in regards of heat resistance.
- Outgas amount is relatively lower and it’s ideal to be used in cleanroom facilities and vacuum applications.
Properties of VESPEL Material
| Item | Test Method | Value | Unit | |
|---|---|---|---|---|
| Physical Properties |
Density | ISO 1183-1 | 1.43 | g/㎤ |
| Thermal Properties |
Heat Deflection Temperature (1.8 Mpa) |
ISO 75-1 | 340 | ℃ |
| Coefficient of Thermal Expansion (23 – 300℃) |
– | 45×10-6 | m/m·K | |
| Mechanical Properties |
Tensile Strength |
ISO 527-1 | 163 | Mpa |
| Elongation at yield | ISO 527-1 | 7.5 | % | |
| Rockwell Hardness |
ISO 2039-2 | E95 |
How to Order

① Keyway
- No mark
- No Keyway
- K(b size)
- Keyway processed according to the indicated b size.






