Motor Disassembly Safety & Product Disclaimer Notice

1. Safety Warning: Cut off all power supply before replacing carbon brushes; stop operation immediately if abnormal spark occurs.
2. Disclaimer: This graphite carbon brush bulk pack is aftermarket motor spare part, not original component of any power tool brand.

Product Overview

Bulk set of 100pcs motor carbon brushes, including 50pcs ordinary graphite brushes + 50pcs unilateral auto-stop self-cutoff brushes, unified dimension 6×14×17mm. The unilateral self-stop design will automatically cut off power when graphite wears to limit position, effectively protecting motor rotor from damage. High-density solid graphite block with tightly woven copper wire, low spark, wear-resistant, widely matched with circular saw, profile cutter, miter saw, stone cutting machine, electric chain saw and other cutting equipment motors with matching brush cavity size, ideal bulk inventory for repair workshops.

Core Key Advantages

• 100pcs mixed pack: 50 normal + 50 unilateral self-stop carbon brushes
• Auto power-off protection design avoids motor burnout when worn thin
• High density graphite for long service life & stable low spark output
• Tightly crimped copper braided wire, not easy to break under vibration
• Standard 6×14×17mm size fits most cutting machine motors
• Bulk packaging meets long-term maintenance spare demand

Full Technical Specifications

Single Brush Dimension	6mm × 14mm × 17mm
Pack Composition	50pcs Ordinary + 50pcs Unilateral Self-Stop Brushes
Main Material	High Density Graphite + Copper Braided Wire
Protection Function	Unilateral Auto Power Cutoff Self-Stop
Applicable Motor	Circular Saw / Profile Cutter / Miter Saw / Stone Cutter

Universal Compatibility Description

This mixed self-stop carbon brush set fits most wood & metal cutting power tools whose motor brush slot matches 6×14×17mm internal dimension.

Operation Principle Of Self-Stop Carbon Brush

A safety limiting contact is set on one side of the brush. When the graphite block is worn down to the limit position, the circuit will automatically disconnect to prevent direct friction between copper wire and motor rotor, effectively extending motor service life.

Installation Steps

1. Completely cut off power before disassembling tool motor housing.
2. Take out worn old brushes and clean internal brush slot dust.
3. Install new carbon brush and ensure copper wire without extrusion.
4. Reassemble shell and test cutting machine normal operation.

Package Contents

• 100 × Graphite Carbon Brushes (50 Normal + 50 Self-Stop)
• Multilingual Motor Maintenance Safety Instruction Card

Frequently Asked Questions

Q1 What size are these carbon brushes?

A1 Unified standard dimension: 6mm width ×14mm thickness ×17mm length.

Q2 What’s included in one pack?

A1 Total 100 pieces: 50 ordinary brushes and 50 unilateral self-stop brushes.

Q3 How does the self-stop function work?

A1 It automatically cuts power when graphite wears to limit to protect motor rotor.

Q4 Is this original tool spare part?

A1 This universal aftermarket bulk brush set, not factory original motor component.