Kande XL2 D54L78 Flexible Jaw Spider Steel Shaft Coupler CNC
Kande XL2 D54L78 Flexible Jaw Spider Steel Shaft Coupler CNC
Details
Kande XL2 D54L78 Clamp-Type Flexible Jaw Spider Shaft Coupler
Upgrade your CNC machine, ballscrew, or motor drive system with the Kande XL2 D54L78 Flexible Jaw Spider Shaft Coupler. Engineered to a high standard, this clamp-type coupling delivers reliable torque transmission, vibration dampening, and precise shaft alignment across a wide range of bore sizes — making it an essential component for both professional machinists and DIY CNC builders.
Key Features
- Versatile Bore Sizes: Compatible with 12, 14, 15, 16, 20, 22, 25, and 28 mm shaft diameters — covers the most common CNC motor and ballscrew configurations.
- Jaw / Spider (Plum) Structure: The jaw-and-spider design provides flexible, zero-backlash torque transfer while absorbing minor angular, parallel, and axial misalignment.
- Clamp-Type Locking: Secure split-clamp design tightens firmly around the shaft without damaging the shaft surface, allowing easy installation and removal.
- High-Grade Steel Construction: Built from durable steel for long service life under demanding machining loads and continuous-duty CNC applications.
- Standard Dimensions (D54 × L78 mm): 54 mm outer diameter, 78 mm overall length — fits standard machine tool coupling specifications.
- Flexible Coupling: Accommodates slight shaft misalignment, reduces transmitted vibration, and protects connected components from shock loads.
- Wide Application Range: Suitable for CNC routers, milling machines, lathes, 3D printers, servo/stepper motor drives, and ballscrew assemblies.
Specifications
| Attribute | Detail |
|---|---|
| Brand | KANDE BEARINGS |
| Model Number | D54L78 (XL2) |
| Material | Steel |
| Structure | Jaw / Spider (Plum) |
| Coupling Type | Flexible, Clamp-Type |
| Outer Diameter | 54 mm |
| Overall Length | 78 mm |
| Bore Sizes Available | 12 / 14 / 15 / 16 / 20 / 22 / 25 / 28 mm |
| Standard | Standard |
| Country of Origin | Made in China |
Why Choose a Jaw Spider Coupling?
Jaw spider (plum) couplings are the go-to choice for precision CNC applications because the polyurethane or rubber spider element absorbs vibration and compensates for minor shaft misalignment without sacrificing rotational accuracy. The result is smoother machine performance, reduced wear on bearings and lead screws, and more consistent machining outcomes.
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Frequently Asked Questions
Q: What bore size combinations can the Kande XL2 D54L78 shaft coupler accommodate?
A: The D54L78 clamp-type coupler is available in bore sizes of 12, 14, 15, 16, 20, 22, 25, and 28 mm. Each half of the coupler can be ordered in the same or different bore sizes, making it ideal for connecting shafts of different diameters — a common requirement when coupling a servo motor shaft to a ballscrew.
Q: Is this coupler suitable for high-speed CNC spindle or servo motor applications?
A: Yes. The steel jaw/spider (plum) flexible coupler is designed for CNC motors, ballscrews, servo drives, and stepper motor applications. The flexible spider element compensates for misalignment and reduces vibration, ensuring smooth, accurate power transmission at typical CNC operating speeds.
Q: How do I install the clamp-type shaft coupler?
A: Slide each half of the coupler onto the respective shaft ends, insert the spider element between the two jaws, and tighten the split-clamp bolts with an Allen/hex key to the recommended torque. No keyway is required, though the clamp design provides a secure hold on the shaft without marring the surface.
Q: What is the difference between a rigid and flexible shaft coupler for CNC use?
A: A rigid coupler transmits torque with zero compliance — any shaft misalignment causes stress on bearings and machine components. A flexible jaw spider coupler like the Kande D54L78 incorporates a replaceable spider element that absorbs minor misalignment and vibration, extending the life of connected components and improving overall machine performance.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
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