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.)
SCJ Series
Cross Joint Coupling 
- Product Overview
-
Dimensions / Performance / CAD
Structure & Material

| Structure | Material | Surface Treatment |
|---|---|---|
| Hub | High Strength Aluminum Alloy | Anodizing |
| Center Block | Stainless Steel | – |
| Pin | SUJ2 | Electroless Nickel Plating |
| Bushing | DU Bearing | – |
| Screw | SCM435 | Black Oxide |
Product Features & Application
- SCJ series is excellent for absorbing both angular/parallel misalignment through middle pin/bushing structure and minimizes reaction force on the shaft. (This coupling combines strong features of SOH series coupling and universal joint.)
- This series structurally doesn’t absorb end-play.
| High Torque (Durability) | △ | |
|---|---|---|
| Torsional Stiffness | ○ | |
| Vibration Absorption | △ | |
| Misalignment Absorption | ☆ | |
| Minimized Reaction Force | ☆ | |
| Applicable Motors | Servo | ○ |
| Stepping | ○ | |
| Encoder | ○ | |
| General | – | |
Application : Cartesian Robot, UVW Stage, Machine tools, Index Table

Clamping Methods
| Set-screw (No mark) |
General | ○ |
|---|---|---|
| With Keyway | ○ | |
| Side-clamp (C) | General | ○ |
| Hub Split | X | |
| With Keyway | ○ | |
| Taper-ring (T) | X | |
How to Order

① Clamping Methods
- No mark
- Set-screw
- C
- General Side-clamp
② Center-Through
- No mark
- No Keyway
- K(b size)
- Keyway processed according to the indicated b size.






