3/8in. To 1/2in. Helical Style Coupler

This 3/8” to 1/2” coupler is perfect for adapting NEMA 23 stepper motors with a 3/8″ shaft to 1/2” screws. With a compression fitting on both ends, it will clamp tight, but won’t mar the face of your motor shaft or damage your screw.

With it’s helically milled grooves, this coupler is stiff in the rotary direction for zero-backlash motion, but allows some play for misalignment between shaft and motor. A significant upgrade over standard Lovejoy couplings.

Specifications

• 3/8” bore on one end, 1/2” bore on the opposite end
• 1.25” Length x 1.0” Diameter
• Maximum Speed 6500 rpm
• Working Torque 4.1N.m
• Maximum Torque 7N.m
• Maximum Eccentric Error +/-0.2mm
• Maximum Eccentric Angle < 2.0 degrees