100Pcs 7×8×12mm Self-Stop Carbon Brush 21# Compatible With Angle Grinder G10SF3

100Pcs 7×8×12mm Self-Stop Graphite Carbon Brush 21# For Angle Grinder G10SF3

Safety Replacement Warning

Cut off power supply completely before disassembling and replacing carbon brushes to avoid electric shock risk. Check brush wear regularly to protect motor internal components.

Product Overview

7×8×12mm unilateral auto cutoff carbon brush model 21#, bulk pack of 100 pieces (50pcs normal graphite brushes + 50pcs self-stop brushes). Made of high-density wear-resistant graphite with tightly embedded copper wire, not easy to fall off during high-speed operation. Built-in self-cutoff safety structure: when the brush wears to limit position, the power tool automatically shuts down to prevent motor damage. Universal replacement spare part compatible with multiple electric grinders, hammers and planers.

Core Product Advantages

• Auto self-stop safety design protects motor from overwear damage
• High density solid graphite, long service life & stable conductive performance
• Tight embedded copper wire, anti-fall under high-speed rotation
• Standard size 7×8×12mm, model 21 universal matching
• 100pcs mixed bulk pack, cost-effective for repair shops stock
• Compatible with angle grinders, electric hammers & electric planers

Full Technical Specifications

Model No.	21#
Single Size	7×8×12mm
Material	High Density Graphite + Copper Wire
Pack Quantity	100Pcs (50 Normal + 50 Self-Stop)
Core Feature	Unilateral Auto Cutoff Self-Stop Function
Product Type	Power Tool Replacement Spare Parts

Compatible Equipment List

Angle Grinder

Compatible with model G10SF3 angle grinder

Electric Hammer

Fit 26 type electric hammer

Electric Grinding Head

Fit 6mm mini electric grinding machine

Electric Planer

Fit M1B-FF02-82X1 electric planer

Installation & Maintenance Tips

1. Make sure power is fully disconnected before replacing brushes.
2. Check copper wire tightness before installation.
3. Replace both brushes at the same time for balanced operation.
4. Store dry to avoid graphite oxidation.

Package Contents

• 100 × Model 21# Graphite Carbon Brushes (Mixed Self-Stop & Normal)
• Multilingual Specification Instruction Card

Frequently Asked Questions

Q1 What is the size of this carbon brush?

A1 Standard dimension 7×8×12mm, model 21 universal power tool brush.

Q2 How many pieces are included in one pack?

A1 Total 100pcs, including 50 self-stop brushes and 50 normal graphite brushes.

Q3 What’s the function of self-stop design?

A1 Automatically cut power when brush wears to limit, protect tool motor from damage.

Q4 Which tools can these brushes fit?

A1 Compatible with multiple angle grinders, electric hammers and electric planers of matching models.