uxcell 5mm to 8mm Shaft Coupling 25mm Length 20mm Diameter Stepper Motor Coupler Aluminum Alloy Joint Connector for 3D Printer CNC Machine DIY Encoder

Price: $13.19
(as of Oct 07, 2025 17:51:18 UTC – Details)

Product description

Flexible Helical Shaft Coupling

For small torque shaft connection. Absorption of parallel, angular misalignments and shaft end-play by spring action

Introduction of Shaft Couplings:

Know the Size You Need

We provide various kinds of rigid flange coupling for choosing. Please check the correct size: d1, d2, L, and D before purchase

DIY Applications

Widely used in drive systems for encoders, instrumentation,lead screws, small pumps, feed rollers and anywhere light to medium duty, torsionally flexible coupling

CNC Machine

Flexible coupling suitable for model shaft connection, perfect accessories for RC Model motor, etc.

Robot Replacement

A special coupler, which can fix one shaft to a plane and install other parts on the shaft easily. Double connection points fasten the coupler tightly

Click Below Blue Links to Find More Different Shaft Couplings:

Customer Reviews

4.3 out of 5 stars 43

4.8 out of 5 stars 29

4.6 out of 5 stars 160

4.0 out of 5 stars 36

4.2 out of 5 stars 30

3.8 out of 5 stars 26

Material
Aluminium Alloy & Stainless Steel Aluminum Alloy & PU Aluminum Alloy Aluminum Alloy Copper Stainless Steel

Size Range
8mm to 19mm 8mm to 20mm 5mm to 12mm 3mm to 8mm 4mm to 12mm 2.3mm to 8mm

With Hex Key
X X X X
✓
X

Shaft Usage: 5mm to 8mm / 0.19 to 0.31 inch
Material: Aluminum alloy; Size: 25x20mm/ 0.98×0.79inch( L*D)
Feature: Spline shaft with coiling clamping; Main Color: Silver tone
Flexibility of coupling shaft removes stress between the motor and driving components.
The shaft couplers are widely applied to small CNC machines encoding and 3D printers Z shaft coupling, simplifies the debugging difficulty.