DC Motor Hoist Pulley – 6mm Shaft Compatible

This is a simple but effective pulley/spool system designed to mount onto a DC geared motor with a 6mm diameter shaft. I created this to act as a winch for winding rope or cord in robotics and lifting mechanisms.

Key Features:

• 6mm Shaft Fit: Designed specifically for standard DC geared motor shafts (check your motor's shaft diameter before printing).

• Secure Locking: The extended hub features a hole for a set screw (M3 recommended) to clamp the pulley firmly onto the motor shaft, preventing it from slipping under load.

• High Walls: Large flanges ensure the rope stays contained on the spool during operation.

Hardware Required

• 1x M3 Screw/Bolt: To act as a set screw for locking the hub to the motor shaft.

Print Settings

I printed this with standard settings which provided sufficient strength for lifting tasks.

• Layer Height: 0.20 mm

• Infill: 20%

• Infill Pattern: Gyroid (Good balance of strength and material saving)

• Supports: use normal (Auto) support type 

• Material: PLA or PETG