SPIDER Automation | 51mm Steel Motor Pulley | 10mm H-Type Bore for MY1020 & BM1109 Motors
Product Overview
The 51mm Steel Motor Pulley is a mechanical power-transmission component intended for compatible MY1020 and BM1109 motor installations. It is designed to mount on a matching motor shaft and transfer rotational power through a suitable belt-drive arrangement.
The pulley features a 51mm outer diameter and a 10mm H-type installation bore. These dimensions help determine compatibility with the motor shaft and the surrounding drivetrain layout. Its steel construction makes it suitable for mechanical transmission applications in electric bicycles, scooters and custom electric vehicle projects.
For correct operation, the pulley must be paired with a compatible belt and driven pulley. The belt profile, groove geometry and shaft-retention arrangement must match the actual drivetrain design.
Technical Features & Functional Characteristics
- 51mm Pulley Diameter: Provides the specified outer diameter for integration into compatible belt-driven transmission systems.
- 10mm Installation Bore: Designed for mounting on a motor shaft with a matching 10mm interface.
- H-Type Installation Bore: Uses an H-type mounting profile for a compatible shaft arrangement.
- Steel Construction: Made from steel for mechanical power-transmission use.
- MY1020 & BM1109 Compatibility: Intended for compatible variants of these motor models, subject to matching shaft geometry.
- Black Finish: Features a black-coloured external finish.
- Belt-Drive Integration: Transfers motor rotation to a compatible driven pulley through a matching belt system.
Belt-Drive Function & Transmission
A motor pulley transfers rotational motion from the motor shaft to a driven pulley through a belt. The relative diameters of the driving and driven pulleys determine the basic transmission ratio.
When paired with a suitable driven pulley, the 51mm motor pulley forms part of a belt-driven transmission system. Correct pulley alignment, belt compatibility and suitable belt tension are important for efficient power transfer and reduced mechanical wear.
The actual transmission ratio and resulting output speed depend on the diameter of the mating pulley, motor speed and the overall drivetrain configuration.
Applications
- MY1020 Motor Drive Systems: For compatible MY1020 motor variants using a matching 10mm H-type shaft interface.
- BM1109 Motor Installations: For compatible BM1109 motor configurations with matching pulley mounting geometry.
- Electric Bicycle Drivetrains: For suitable belt-driven transmission arrangements in custom electric bicycle builds.
- Electric Scooter Projects: For compatible motor-to-driven-shaft belt transmission systems.
- DIY Electric Vehicle Conversions: For custom belt-drive layouts using compatible motor and driven pulley assemblies.
- Mechanical Power Transmission: For transferring rotational power between motor shafts and driven components through a suitable belt.
- Replacement Motor Pulleys: For replacing an existing pulley when the diameter, shaft interface and belt geometry match.
- Workshop Prototyping: For developing and testing compatible belt-driven mechanical assemblies.
Package Includes
| Quantity | Component |
|---|---|
| 1 | 51mm Steel Motor Pulley with 10mm H-Type Installation Bore |
Product Specifications
| Parameter | Specification |
|---|---|
| Product Category | Mechanical Power-Transmission Component |
| Item Type | Motor Pulley |
| Outer Diameter (OD) | 51mm |
| Installation Bore Diameter | 10mm |
| Installation Bore Type | H-Type |
| Material | Steel |
| Colour | Black |
| Compatible Motor Models | MY1020 and BM1109, subject to matching shaft interface |
| Transmission Type | Belt-driven power transmission |
| Intended Application | Motor-to-driven-pulley power transmission |
| Package Quantity | 1 pulley |
Installation & Operating Recommendations
Install the pulley on a compatible motor shaft and pair it with a belt and driven pulley designed for the same transmission profile. Correct shaft engagement, pulley alignment and belt tension help maintain smooth power transmission.
- Confirm Shaft Compatibility: Check that the motor has a matching 10mm H-type shaft interface before installation.
- Check the H-Type Profile: Match the bore geometry with the motor shaft profile. Bore diameter alone does not establish compatibility with every 10mm shaft.
- Match the Belt Profile: Select a belt that matches the pulley groove or engagement geometry. Do not assume compatibility with a particular belt type without checking its profile.
- Align the Pulleys: Keep the motor pulley and driven pulley in the same alignment plane to reduce belt tracking problems and uneven wear.
- Set Suitable Belt Tension: Maintain tension according to the belt manufacturer’s requirements. Excessive tension can increase loads on the motor shaft and bearings.
- Secure the Assembly: Use a suitable shaft-retention method compatible with the pulley and motor design.
- Test Before Full Operation: Run the drivetrain at low speed and check for belt tracking issues, abnormal noise or vibration.
- Inspect Periodically: Check pulley alignment, belt condition and mounting security during routine maintenance.
