20Pcs Motor Carbon Brushes Set – 10 Sizes for Power Tools

20-Piece Carbon Brush Replacement Set – 10 Sizes for Power Tool Motors

Keep your power tools running at peak performance with this comprehensive 20-piece carbon brush replacement set from VIBRATITE. Covering 10 of the most common brush sizes, this kit is the go-to solution for DIYers and professionals who rely on hammer drills, angle grinders, circular saws, cut-off saws, and other electric motor-driven tools. Made in Mainland China.

Why Replace Your Carbon Brushes?

Carbon brushes are the critical contact points that transfer electrical current to a motor's rotating armature. Over time, they wear down naturally — and worn brushes can cause your tool's motor to spark excessively, run roughly, or stop altogether. Replacing them promptly restores smooth, efficient motor operation and extends the life of your tools.

Key Features

• 20 Brushes, 10 Sizes: Each size includes 2 identical brushes so you can replace them in matched pairs as recommended
• Wide Compatibility: Fits hammer drills, angle grinders, circular saws, cut-off saws, and a broad range of other power tool motors
• High-Quality Carbon Material: Consistent conductivity and wear resistance for reliable, long-lasting motor contact
• Convenient Variety Pack: One kit covers multiple tools — ideal for workshops, job sites, and home garages
• No Hazardous Chemicals: Contains no high-concern chemicals

Specifications

• Quantity: 20 pcs (2 pcs per size, 10 sizes total)
• Sizes Included (L × W × H mm):
  • 7 × 17 × 19 mm
  • 5 × 11 × 18 mm
  • 6.5 × 7.5 × 13 mm
  • 6.5 × 13.5 × 18 mm
  • 6 × 10 × 17 mm
  • 6 × 9 × 14 mm
  • 7 × 11 × 18 mm
  • 6 × 8 × 14 mm
  • 5 × 8 × 13 mm
  • 5 × 8 × 15 mm
• Color: As shown in product images
• Brand: VIBRATITE
• Country of Origin: Made in Mainland China

Package Contents

• 20 × Carbon Brushes (10 matched pairs across 10 sizes)

Installation Tips

When fitting new carbon brushes, always inspect the motor's armature for signs of burn marks or cracks before reassembly. Replace brushes in matched pairs to ensure even wear and balanced motor performance. Always disconnect your tool from power before performing any maintenance.

For safe tool maintenance practices and electrical safety guidance, refer to the OSHA Electrical Safety Resource.

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Note: Monitor color settings may cause slight colour differences from product images. Please allow a small tolerance for manual measurements.

Frequently Asked Questions

Q: What power tools are these carbon brushes compatible with?

A: This 20-piece carbon brush set is designed for a wide range of electric motor-driven power tools, including hammer drills, angle grinders, circular saws, and cut-off saws. With 10 different sizes included, there is a high chance of finding the right fit for most common household and professional-grade tools.

Q: How do I know which size carbon brush I need?

A: Measure your existing worn carbon brush using a set of calipers — note the length, width, and height in millimetres. Then match those dimensions to one of the 10 sizes included in this kit. The 10 sizes cover the most frequently used brush dimensions in popular power tool brands.

Q: How often should carbon brushes be replaced?

A: Replacement frequency depends on usage intensity. As a general guide, inspect brushes every 50–100 hours of operation or if you notice increased sparking, reduced motor power, or unusual noise. Always replace brushes in matched pairs for optimal motor balance and longevity.

Q: Is it safe to replace carbon brushes myself?

A: Yes — carbon brush replacement is a standard maintenance task for power tools. Always ensure the tool is fully unplugged and the battery is removed (if applicable) before accessing the brush compartment. Follow your tool manufacturer's instructions and inspect the armature for any signs of damage before fitting new brushes.