説明
High-Torque Flange Coupling – Keyed & Set Screw Rigid Type (High-Strength Aluminum Alloy)
⚡ Dual-Locking Security
Combines a standard mechanical keyway with an M6 threaded set screw hole, providing maximum torque transmission with zero-backlash and no slippage under high-impact loads.
🛠️ Premium Material & CNC Precision
Precision CNC machined from high-strength aluminum alloy, perfectly balancing lightweight performance with exceptional structural rigidity for heavy-duty applications.
⚙️ Universal Wheel Compatibility
- Ø47.5mm Pitch Circle: Features 3 × Ø5mm through-holes, perfectly fitting 100mm and larger omni wheels, Mecanum wheels, pneumatic wheels, and honeycomb wheels.
- Ø45mm Pitch Circle: Features 3 × Ø5mm through-holes, fully compatible with Robomaster’s 152mm Mecanum wheels.
🤖 Industrial-Grade Applications

Engineered as an ideal hardware solution for advanced robotics, ROS research platforms, heavy-duty 4WD skid-steer robots, and smart AGV automation equipment.
Specifications Table
| Parameter |
Specification / Value |
| Material |
High-Strength Aluminum Alloy |
| Fixation Type |
Keyway + M6 Set Screw |
| Outer Diameter (a) |
Ø30 mm |
| Flange Diameter |
Ø56.8 mm |
| Total Length |
26.4 mm |
| Flange Thickness |
6 mm |
| Set Screw Hole |
M6 Threaded Hole |
| Bore Size (b) |
Keyway Dimensions (c*d) |
Product Weight |
| Ø8mm |
3mm × 1.6mm |
73.5g |
| Ø10mm |
4mm × 1.6mm |
71.4g |
| Ø12mm |
4mm × 1.6mm |
69.0g |
| Ø14mm |
5mm × 2.1mm |
65.0g |
| Ø15mm |
5mm × 2.1mm |
64.8g |
| Ø16mm |
5mm × 2.1mm |
62.9g |
| Ø18mm |
6mm × 2.6mm |
57.6g |
📋 Frequently Asked Questions (FAQ)
Q1: What is the advantage of the dual-locking (Keyway + Set Screw) design?
The standard mechanical keyway handles the bulk of the high-torque transmission and prevents rotational slippage under heavy loads or sudden reversals. The M6 set screw provides axial positioning and extra locking security, ensuring zero-backlash and maximum stability for advanced robotics.
Q2: Is this flange coupling fully compatible with RoboMaster wheels?
Yes. The flange features two different bolt circles. The inner Ø45mm pitch circle with 3 × Ø5mm through-holes is perfectly spaced and explicitly engineered to match standard RoboMaster 152mm Mecanum wheels.
Q3: What wheels can be mounted using the Ø47.5mm bolt circle?
The Ø47.5mm pitch circle (3 × Ø5mm through-holes) is universally compatible with standard 100mm and larger omnidirectional wheels, Mecanum wheels, heavy-duty pneumatic tires, and honeycomb wheels commonly used in ROS research platforms and AGVs.
Q4: Does the package include the drive key and set screws?
Each coupling comes with the corresponding M6 tightening set screw included. Please note that the square drive shaft key (parallel key) is not included and needs to be matched according to your motor shaft’s specifications.
Looking for technical review files? Formal factory compliance documents and
3D CAD / STP models are fully available. Please
contact our engineering support team for high-resolution PDF test reports.
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