Flexible Jaw Shaft Coupler D55L66 CNC Plum Coupling 10–28mm

$89.78 $101.48

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Inner Diameter

Flexible Jaw Shaft Coupler – D55L66 CNC Plum Clamp Coupling

Upgrade your CNC machine, servo motor, or stepper motor setup with this precision-engineered CF-03/BW Series Flexible Jaw (Spider) Shaft Coupler. Machined from lightweight, high-strength aluminium alloy and engineered to the D55L66 standard, this coupler delivers smooth, reliable torque transmission while compensating for minor shaft misalignment — keeping your drivetrain running accurately and efficiently.

With a wide range of compatible inner bore sizes from 10 mm to 28 mm, this coupling fits virtually any combination of motor and lead-screw shaft diameters. Simply select the bore pairing you need and note it in your order message. RoHS certified and built to standard specifications.

Key Features

Series: CF-03/BW Flexible Plum (Jaw/Spider) Coupler
Dimensions: Outer Diameter 55 mm × Length 66 mm (D55L66)
Material: High-grade Aluminium Alloy
Structure: Jaw / Spider (Plum) — flexible element absorbs vibration and compensates for angular, radial, and axial misalignment
Inner Bore Sizes: 10, 11, 12, 12.7, 14, 15, 16, 18, 20, 22, 24, 25, 26, 28 mm (sold in any combination pair — see full size chart below)
Standard: Standard Part — RoHS Certified
Package Weight: 0.35 kg
High-Concern Chemicals: None

Available Bore Size Combinations

Select any bore pairing from the list below. Both sides can be the same or different diameters to suit your application:

10×10, 10×11, 10×12, 10×12.7, 10×14, 10×15, 10×16, 10×18, 10×20, 10×22, 10×24, 10×25, 10×26, 10×28

11×11, 11×12, 11×12.7, 11×14, 11×15, 11×16, 11×18, 11×20, 11×22, 11×24, 11×25, 11×26, 11×28

12×12, 12×12.7, 12×14, 12×15, 12×16, 12×18, 12×20, 12×22, 12×24, 12×25, 12×26, 12×28

12.7×12.7, 12.7×14, 12.7×15, 12.7×16, 12.7×18, 12.7×20, 12.7×22, 12.7×24, 12.7×25, 12.7×26, 12.7×28

14×14, 14×15, 14×16, 14×18, 14×20, 14×22, 14×24, 14×25, 14×26, 14×28

15×15, 15×16, 15×18, 15×20, 15×22, 15×24, 15×25, 15×26, 15×28

16×16, 16×18, 16×20, 16×22, 16×24, 16×25, 16×26, 16×28

18×18, 18×20, 18×22, 18×24, 18×25, 18×26, 18×28

20×20, 20×22, 20×24, 20×25, 20×26, 20×28

22×22, 22×24, 22×25, 22×26, 22×28

24×24, 24×25, 24×26, 24×28

25×25, 25×26, 25×28

26×26, 26×28

28×28

Please leave your required bore size combination as a message when placing your order. All bore pairings are priced the same.

Typical Applications

CNC routers, milling machines, and laser engravers
Servo and stepper motor connections to lead screws or ball screws
3D printer Z-axis and drive shaft assemblies
Industrial automation and robotics drive systems
General mechanical power transmission

Made in Mainland China.

Frequently Asked Questions

Q: What bore size combination should I choose for my CNC machine?

A: Measure the shaft diameter on both your motor output and your lead screw or ball screw. For example, if your stepper motor shaft is 14 mm and your lead screw is 16 mm, select the 14×16 combination. All combinations in the D55L66 size are priced the same — simply note your required pairing in the order message.

Q: What type of misalignment does this flexible jaw coupler compensate for?

A: The jaw (spider/plum) flexible element compensates for angular, radial, and axial misalignment between two connected shafts. This helps reduce vibration transmission and protects your motor and drive components during operation.

Q: Is this coupler compatible with both metric and inch shafts?

A: Yes. The available bore sizes include the 12.7 mm (½ inch) option alongside standard metric sizes, making this coupler suitable for mixed metric/imperial drive setups commonly found in CNC and automation equipment.

Q: What material is the coupler body made from?

A: The coupler hubs are precision-machined from high-grade aluminium alloy, offering an excellent balance of strength, low rotational inertia, and corrosion resistance. The product is RoHS certified with no high-concern chemicals.

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.

We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.