D25L35 Aluminium Three-Jaw Flexible Shaft Coupling | CNC Coupler

Aluminium Three-Jaw Flexible Shaft Coupling – D25L35 CNC Motor Connector

Achieve precise, vibration-dampening shaft connections with this D25L35 Three-Jaw Aluminium Flexible Coupling from KANDE BEARINGS. Engineered for CNC machines, stepper motors, servo drives, and a wide range of industrial and hobby applications, this plum-style coupler delivers reliable torque transmission while accommodating minor misalignment between connected shafts.

The aluminium alloy hubs are lightweight yet strong, and the polyurethane spider insert acts as a flexible buffer — absorbing shock and reducing vibration for smoother, quieter operation. Available in multiple bore sizes (5 / 6 / 6.35 / 8 / 10 / 12 mm) to suit virtually any standard motor or lead screw shaft pairing.

Made in Mainland China.

Key Features

• Outside Diameter (OD): 25 mm
• Length: 35 mm
• Material: Aluminium alloy hubs with polyurethane spider sleeve
• Type: Three-jaw (plum/spider) flexible coupling
• Bore Options: 5 mm, 6 mm, 6.35 mm, 8 mm, 10 mm, 12 mm
• Standard: Standard configuration — easy drop-in replacement
• Flexible: Yes — accommodates angular, parallel, and axial misalignment
• Model: XB/CF-03

Why Choose a Three-Jaw Flexible Coupling?

Unlike rigid couplings, the three-jaw (spider) design splits torque across three lobes, with the polyurethane insert acting as a shock absorber. This protects sensitive motor bearings and lead screws from sudden load changes, extending the service life of your drive system. Ideal for CNC routers, 3D printers, laser engravers, and custom automation builds.

Compatible Applications

• CNC router & milling machines
• 3D printer Z-axis lead screws
• Stepper & servo motor drives
• Robotics and automation assemblies
• DIY engineering and maker projects

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Frequently Asked Questions

Q: What bore sizes does the D25L35 three-jaw flexible shaft coupling come in?

A: This aluminium flexible coupling is available in six bore sizes: 5 mm, 6 mm, 6.35 mm, 8 mm, 10 mm, and 12 mm, making it compatible with the most common stepper motor and lead screw shaft diameters used in CNC and automation builds.

Q: What is the spider insert made of, and why does it matter?

A: The spider (plum) insert is made of polyurethane. This flexible material absorbs vibration and shock between the two aluminium hubs, reducing noise and protecting motor bearings and drive components from sudden torque spikes.

Q: Can this coupling handle shaft misalignment?

A: Yes. The three-jaw flexible design accommodates small degrees of angular, parallel, and axial misalignment, making it more forgiving than a rigid coupler during assembly and operation — an important advantage in CNC and motion-control systems.

Q: Is this coupling suitable for 3D printer Z-axis assemblies?

A: Absolutely. The D25L35 dimensions and multi-bore availability make this coupler a popular choice for 3D printer Z-axis lead screw connections to stepper motors, providing smooth transmission and reducing Z-wobble caused by minor misalignment.

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.