18mm to 18mm Aluminum Shaft Coupling, Flexible Spider Coupling D40 L66, Shaft Coupler Joint Connector for Stepper Motor 3D Printer CNC Router Engraving Drilling Milling Machine

Size：Diameter 40mm Length 66mm/ Diameter 1.57inch Length 2.6inch.

Bore 18-18mm/0.71-0.71inch.

Type: Plum shaped Material: Using Aviation Aluminum with corrosion resistance High Hardness, High Precision, Anodized Surface Treatment, Strong and Durable.

Spider Material (Elastomer) Uses T-PUR, Longer Service Life Super Torque: Can Absorb Vibration, Appropriate a Large Torque Transmission.

High Hardness, Durable, and Excellent Response, Not Easy to Loosen Vibration-damping: Flexible Spider Couplings Offset Angular, Radial and Axial Shaft Displacement Within Defined Ranges.

The Elastomer Dampens Shock and Torsional Vibrations in The Drive Train Wide Range of Usage: Flexible Couplings is Suitable to Offset Axial, Radial and Angular Displacements and Dampen Vibrations and Torque Shocks for 3D Printer DIY Encoder CNC Router Machine Servo Stepped Motor and Engraving Drilling Milling Machine