SPIDER Automation | MY1020 E-Bike Motor Pinion | 11T T8F Alloy Drive Gear
The SPIDER Automation MY1020 E-Bike Motor Pinion – 11T is a replacement motor-side drive gear intended for compatible MY1020 electric bicycle motors. Its 11-tooth profile is designed to engage with a matching T8F chain, allowing motor rotation to be transmitted to the connected drivetrain.
Constructed from alloy material, this pinion features a compact gear profile with a 10mm inner diameter and an 8.5mm internal width. These mounting dimensions are important when checking compatibility with the motor shaft and existing gear assembly. Confirm the motor’s pinion dimensions before ordering.
Product Overview
A motor pinion is fitted to the motor shaft and engages with a compatible chain or transmission component. In an electric bicycle, it transfers rotational movement from the motor into the chain-drive system.
This 11T MY1020 pinion is intended for replacement or maintenance of compatible motor assemblies using a T8F chain. The pinion tooth count influences the transmission ratio when paired with a driven sprocket. Overall drivetrain performance depends on the motor, driven sprocket, wheel size and complete transmission configuration.
Technical Features & Functional Characteristics
- MY1020 Motor Compatibility: Intended for the MY1020 motor with a matching pinion mounting arrangement.
- 11-Tooth Drive Profile: Provides the specified tooth count for the motor-side chain transmission.
- T8F Chain Engagement: Designed for use with a matching T8F chain profile.
- Alloy Construction: Provides a rigid gear component for mechanical power transmission.
- 10mm Central Bore: Defines the inner diameter for assessing motor-shaft fitment.
- Compact Design: Suitable for integration into compatible MY1020 motor and e-bike drivetrain assemblies.
Chain Compatibility & Gear Ratio
This pinion is specified for a T8F chain. The chain must match the pinion’s tooth geometry to provide correct engagement. Chain types from different series should not be treated as interchangeable without checking their pitch and roller dimensions.
The 11-tooth pinion establishes the motor-side tooth count in the drivetrain. When paired with a larger driven sprocket, it creates a reduction ratio that affects wheel speed and available torque. The final ratio depends on the tooth count of the driven sprocket and the complete drivetrain arrangement.
Applications
This pinion is intended for compatible MY1020 motor assemblies and other suitable T8F chain-drive projects.
- MY1020 E-Bike Motor Repair: For replacing a worn or damaged pinion in a compatible MY1020 motor assembly.
- Electric Bicycle Conversion Kits: For conversion systems using a MY1020 motor and matching T8F chain.
- Custom E-Bike Builds: For electric bicycle projects designed around the specified motor and chain arrangement.
- Electric Tricycle Projects: For compatible chain-driven tricycle systems using a matching MY1020 motor setup.
- Small Electric Vehicle Drivetrains: For suitable motor-driven vehicle projects using T8F chain transmission.
- Motor Maintenance Workshops: For servicing and replacing motor-side drive gears in compatible assemblies.
- Mechanical Prototyping: For developing compact motor-driven chain transmission mechanisms.
Package Includes
- 1 × MY1020 E-Bike Motor Pinion – 11T
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | Motor Pinion / Drive Gear |
| Compatible Motor | MY1020 E-Bike Motor |
| Number of Teeth | 11T |
| Material | Alloy |
| Compatible Chain | T8F Chain |
| Inner Diameter (ID) | 10mm |
| Internal Width | 8.5mm |
| Outer Diameter (OD) | 31.5mm |
| Pinion Thickness | 4mm |
| Face Width | 1.81mm |
| Product Weight | 14g |
Installation & Operating Recommendations
Correct motor-shaft fitment, chain engagement and gear alignment are important for reliable operation. Check the original MY1020 pinion and motor mounting arrangement before installing the replacement.
- Confirm MY1020 Motor Fitment: Check the motor model and compare the original pinion dimensions with this replacement before ordering.
- Match the Shaft Dimensions: Confirm that the motor shaft corresponds to the pinion’s bore and internal width. Do not assume compatibility based on the motor model alone.
- Use a Matching T8F Chain: Select a chain with the correct T8F profile for proper tooth engagement.
- Check Gear Retention: Use the appropriate mounting and retention arrangement for the motor shaft. No keyway or set-screw configuration is specified.
- Maintain Chain Alignment: Align the pinion with the driven sprocket to reduce uneven loading and chain wear.
- Set Suitable Chain Tension: Avoid excessive chain tension, which can increase mechanical loads on the motor shaft and bearings.
- Inspect Before Operation: Confirm secure mounting and smooth chain engagement before applying motor power.
