19mm to 8mm Jaw Type Flexible Coupling D40-L66 - Aluminum Shaft Coupler for Motor and Drive Connections

D40-L66 Aluminum Jaw-Type Coupling: 19→8mm bore (single)
✔️ 40mm OD, 19→8mm bore, 66mm length, aluminum coupling, single unit

This D40-L66 jaw-type flexible coupling connects a motor to a driven shaft in a variety of small powertrains and automation setups. It’s commonly used on compact CNCs, conveyors, and robotics to transmit torque smoothly while tolerating minor misalignment.

✅ Bores: 19 mm and 8 mm for quick motor-to-drive fit
✅ Length: 66 mm and outer diameter: 40 mm for compact footprint
✅ Material: aluminum with electrical insulation in the spider
✅ Tight fit yields zero-backlash at low torque
✅ Easy hub-to-sleeve assembly with secure alignment

💡 What is a jaw type flexible coupling and where is it used in small drive systems?

This handy piece is used in automation to join shafts and transmit torque while tolerating minor misalignment. - Handy for CNCs, robotics, and conveyors requiring a 19 mm to 8 mm bore - Ideal aluminum shaft coupling for motor-to-drive connections in compact automation - Helps absorb misalignment and vibration to extend drive life