D39 L49 18mm To 19mm Motor Shaft Coupling Double Diaphragm Aluminum Disc Coupling For Servo Motor Stepper Motor Encoder Screw Drive And CNC Machine Platform Clamp Style Mount Rock Solid Lightweight 10000 RPM

High-precision D39 49mm servo shaft coupling for CNC
✔️ Clamp-style, 18-19 mm shaft fit, 1 pc, 5.8 N·m torque, 10000 RPM

This compact D39 x L49 double diaphragm disc coupling provides backlash-free power transfer between a motor shaft and a ball screw or drive system. It’s ideal for CNC mills, 3D printers, servo motors, stepper motors, and encoders where accurate motion and compact form factor matter.

Dimension	Metric	Imperial
Outer diameter	39 mm	1.54 in
Length	49 mm	1.93 in
Compatible shaft	18-19 mm	0.71-0.75 in
Net weight	118 g	4.17 oz
Rated torque	5.8 N·m	5.8 N·m
Max speed	10000 RPM	10000 RPM

✅ Outer diameter 39 mm (1.54 in) and length 49 mm (1.93 in) for compact fit
✅ Clamp-style mount for secure attachment to shaft
✅ Axial, angular, and radial misalignment compensation for smooth drive
✅ Aluminum hubs keep it lightweight; stainless steel discs add strength
✅ Backlash-free, torsionally stiff, maintenance-free, no wear
✅ Rated torque 5.8 N·m; 10000 RPM capability
✅ Packing: 1 pc coupler

💡 What is a high torque shaft coupling used for in precision CNC and 3D printer drive systems? This handy overview explains its role in reliable motion. - Transmits torque with minimal backlash - Handles small angular and parallel misalignment - Made from lightweight aluminum hubs with strong stainless discs