SPIDER Automation | Replacement Motor Brush for MY1020Z E-Bike Motor | 20 × 10 × 8mm
The SPIDER Automation Replacement Motor Brush for MY1020Z is a spare component intended for maintenance and repair of compatible brushed DC motor assemblies. Motor brushes transfer electrical current to the rotating commutator through continuous sliding contact, allowing the motor windings to receive current during operation.
Because brushes experience friction and gradual wear, they may require replacement during the service life of a brushed motor. This replacement brush is intended for compatible MY1020Z motor assemblies and provides a compact spare part for motor servicing.
Product Overview & Functional Role
In a brushed DC motor, the brushes maintain electrical contact with the rotating commutator. This contact transfers current from the stationary electrical supply to the motor’s rotating windings, enabling the motor to produce rotation.
Brushes gradually wear due to friction against the commutator. Worn brushes can cause inconsistent electrical contact, increased sparking and reduced motor performance. Replacing them with a compatible brush helps restore the intended contact arrangement.
Technical Features & Functional Characteristics
- MY1020Z Motor Application: Designed as a replacement brush for compatible MY1020Z brushed DC motor assemblies.
- Rectangular Brush Profile: Features a defined length, width and height for matching the original brush and holder.
- Commutator Contact: Provides the sliding electrical contact required for current transfer in a brushed motor.
- Wear-Part Replacement: Suitable for servicing a motor when its original brush has worn through normal operation.
- Compact Spare Component: A lightweight replacement part for motor maintenance and repair work.
How a Brushed Motor Brush Works
A brushed DC motor uses brushes that remain in contact with a rotating commutator. As the motor turns, the brushes transfer electrical current to the commutator segments and motor windings. This arrangement allows the motor to operate using a DC power supply.
The brush is a consumable mechanical-electrical component. Its contact surface gradually wears during operation, so replacement may be necessary when the brush reaches its service limit or no longer maintains proper contact.
Applications
This replacement brush is intended for maintenance of compatible MY1020Z brushed DC motor assemblies.
- MY1020Z Motor Servicing: Replacement of worn brushes during maintenance of compatible MY1020Z motors.
- Electric Bicycle Repairs: Brush replacement in e-bike drive systems using a compatible MY1020Z motor.
- Electric Scooter Maintenance: Servicing compatible brushed DC motor assemblies used in scooter projects.
- DIY E-Bike Conversion Projects: Spare brush for compatible MY1020Z motors used in custom electric bicycle builds.
- Workshop Motor Repairs: Replacement component for servicing and restoring compatible brushed motor assemblies.
Package Includes
- 1 × Brush for E-Bike MY1020Z Motor
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | Motor Brush / Replacement Brush |
| Compatible Motor | MY1020Z Brushed DC Motor |
| Brush Length | 20mm |
| Brush Width | 10mm |
| Brush Height | 8mm |
| Overall Brush Dimensions | 20 × 10 × 8mm |
| Product Weight | 6g |
| Package Quantity | 1 Piece |
Installation & Operating Recommendations
Correct brush fitment and contact with the commutator are important for proper motor operation. Follow the motor’s servicing procedure when replacing the original brush.
- Disconnect the Power Supply: Isolate the motor from its battery or power source before opening the brush assembly.
- Confirm Brush Dimensions: Compare the replacement brush with the original component and check that it fits the MY1020Z brush holder.
- Inspect the Commutator: Check for excessive wear, burning, contamination or surface damage before fitting the replacement.
- Check Brush Movement: Ensure the brush moves freely inside its holder without binding.
- Reinstall the Spring Assembly: Position the original brush spring and related components correctly to maintain contact pressure.
- Reassemble Carefully: Secure the brush holder and motor components according to the motor’s construction.
- Test Motor Operation: Check for abnormal sparking, noise or heating during initial operation after servicing.

















