High-Strength Aluminum Alloy Plum Coupling D20L25 Flexible Spider Shaft Coupler for Nema 17/23 Stepper Motor & CNC Ball Screw
| Property | Specification |
| Model | D20 L25 |
| Material (Hubs) | 6061-T6 Aluminum Alloy |
| Material (Spider) | Polyurethane (TPU) |
| Outer Diameter (D) | 20mm |
| Length (L) | 25mm |
| Bore Range (d1, d2) | 5mm, 6mm, 6.35mm, 8mm, 10mm (Customizable) |
| Max Torque | Approx. 5.0 N·m (Static) |
| Fastening Type | Clamping / Set Screw |
Precision Motion Starts with a Reliable Connection
The D20L25 Plum Coupling is designed to bridge the gap between your drive motor and the lead screw or ball screw. By using a three-piece design—two aluminum hubs and a resilient "spider" insert—this coupler protects your motor bearings from the stress of slight shaft misalignments.
Whether you are building a DIY CNC Router, a Cartesian Robot, or a Precision Laboratory Stage, the D20L25 provides the perfect balance of flexibility and rigidity. Its compact size makes it ideal for tight spaces, while its robust build ensures long-term reliability in high-speed industrial applications.
RFQ
Q: Can the D20L25 coupling handle high-speed rotations?
A: Yes, the balanced aluminum design allows for speeds up to 10,000 RPM, though alignment accuracy is key to minimizing heat at these speeds.
Q: Why choose a plum coupling over a rigid coupling?
A: Plum couplings provide "fail-safe" protection and dampen motor vibrations, whereas rigid couplings can transfer stress directly to the motor shaft, leading to premature bearing failure.
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