Flexible Coupler (4mm to 6.5 mm)

Overview

Connect your motor shaft to a lead screw or other driven shaft with confidence using the MOKWN Flexible Coupler (4mm to 6.5mm). This essential mechanical component is designed to transmit power smoothly while accommodating slight misalignments, reducing stress on your motor and increasing the longevity of your CNC machine or 3D printer. Whether you're building a custom router, a laser engraver, or a precision motion system, this coupler ensures reliable and vibration-free operation.

Key Features

• Flexible Design: Absorbs minor parallel, angular, and axial misalignments, preventing damage to motor bearings and shafts.
• Vibration Damping: Reduces vibrations and noise for smoother motion and higher accuracy.
• Robust Construction: Made from durable materials to withstand continuous operation in demanding environments.
• Easy Installation: Slip-fit design with set screws for quick and secure mounting.
• Versatile Compatibility: Connects shafts from 4mm to 6.5mm, ideal for NEMA 17 motors and common lead screws.

Technical Specifications

• Shaft Diameter (Connects): 4 mm to 6.5 mm
• Material: Aluminum or similar high-strength alloy (exact material may vary)
• Type: Flexible (helical or beam style)
• Color: Silver or black (depending on batch)
• Weight: Lightweight, minimal added inertia

Applications & Use Cases

• CNC Machines: Connect stepper motors to lead screws or ball screws for precise positioning.
• 3D Printers: Ensure smooth Z-axis movement and reduce layer shifting.
• Robotics: Transmit torque in joints and actuators while accommodating misalignment.
• Laser Engravers: Maintain accurate motion for detailed engraving.
• Automation Systems: Reliable coupling in conveyor systems and pick-and-place machines.

What's Included

• 1x Flexible Coupler (4mm to 6.5mm)
• 2x Set Screws (pre-installed)

Compatibility

• Motor Shafts: Fits 4mm, 5mm, and 6.35mm (1/4 inch) shafts.
• Lead Screws: Compatible with 6mm, 6.35mm, and 8mm lead screws (with appropriate bore).
• Common Motors: NEMA 14, NEMA 17, and NEMA 23 stepper motors with 5mm or 6.35mm shafts.

MOKWN Recommendation

For optimal performance, ensure that the coupler is properly aligned and tightened. Use a thread locker on the set screws to prevent loosening due to vibration. If you need a different bore size, check our full range of flexible couplers to find the perfect match for your project.