Flexible Coupler D19L25(5*8MM HOLE)

The Flexible Coupler D19L25(5*8MM HOLE) is a flexible shaft coupling with a 19 mm outer diameter and a 25 mm length that joins a 5 mm shaft to an 8 mm shaft. Its flexible body absorbs small misalignment between the two shafts and reduces vibration, which protects the motor bearings. The 5 mm to 8 mm size is the classic match for a NEMA 17 stepper motor driving an 8 mm lead screw, as used on the Z axis of many 3D printers and small CNC machines.

Flexible Coupler D19L25(5*8MM HOLE) Specifications

• Outer diameter: 19 mm (D19)
• Length: 25 mm (L25)
• Bore sizes: 5 mm on one side, 8 mm on the other
• Type: flexible shaft coupler
• Fixing: screws on each end tighten onto the shafts

Flexible Coupler D19L25(5*8MM HOLE) Applications

• Connecting NEMA 17 stepper motors (5 mm shaft) to 8 mm T8 lead screws
• Z-axis drives on 3D printers
• Small CNC routers, laser engravers and linear stages
• Robotics and DIY automation with 5 mm and 8 mm shafts

What's in the Box

• 1 × flexible coupler D19L25, 5 mm and 8 mm bores

Tip: Slide both shafts in until they almost meet in the middle, then tighten the screws, onto the flat of the motor shaft if it has one. Line up the motor and lead screw as closely as you can; the coupler is made to absorb only small misalignment.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.