Carbon Brush GEKO JC21 6×16×21.5 mm G00490

Carbon Brush GEKO JC21 6×16×21.5 mm is a replacement electrical motor brush designed to restore or maintain electrical contact in small motors, generators and power tools. Manufactured for compatibility with commutators and slip rings that accept the JC21 form factor, this carbon brush provides a conductive interface that enables current transfer between stationary and rotating parts. Its compact rectangular profile and measured dimensions allow it to fit into brush holders where the 6×16×21.5 mm size is required.

Advantages

The GEKO JC21 carbon brush offers consistent electrical conductivity and wear characteristics appropriate for light to medium-duty electrical equipment. Its precise dimensions support straightforward installation and secure seating in standard brush holders. Because the component is a simple, direct-replacement brush, it can reduce downtime during motor maintenance and help restore proper function without the need for extensive component modification.

Suitable for (tasks / use cases)

• Servicing and repairing small electric motors in household appliances and tools
• Replacing worn brushes in generators and alternators with matching brush dimensions
• Maintenance of power tools where the JC21 size is specified
• Workshop and field repairs requiring compact, rectangular carbon brushes

Key specifications

• Material: carbon/graphite conductive brush suitable for commutator contact
• Shape: rectangular block profile
• Nominal dimensions: 6 × 16 × 21.5 mm (thickness × width × length)
• Intended application: sliding electrical contact for commutators and slip rings
• Typical duty: light to medium electrical load in motors and power tools

How to use

Before replacing the brush, disconnect power to the device and access the brush holder according to the machine manufacturer’s instructions. Remove the worn brush carefully, inspect the brush holder, commutator or slip ring for damage and clean away dust or debris. Insert the GEKO JC21 brush into the holder with the correct orientation so that the contact face aligns with the commutator or slip ring. Ensure spring pressure and brush seating are correct, then reassemble the housing and test the equipment at low load to verify proper operation.

Usage recommendations

Replace brushes in pairs when applicable, monitor commutator surface condition, and follow the motor or tool manufacturer’s maintenance intervals. Use the GEKO JC21 brush only where the specified dimensions and rectangular form factor are compatible with the brush holder to ensure reliable electrical contact and minimize sparking or uneven wear.