Carbon Brushes
, Patents, MSDS, Products, Process, Company Profile, Suppliers, Study, Uses
Primary Information Services 
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Project at a Glance Contents on the CD ROM
  • A brush is a device which conducts current between stationary wires and moving parts, most commonly in a rotating shaft.
  • Typical applications include electric motors, alternators and electric generators.
  • There are distinguished basically three types of carbon brushes:
    brushes for automotive applications: Direct Current, voltage 12-48 V,
    brushes for household applications: Alternating Current, voltage 110 / 220 V,brushes for industrial motors: both Alternating Current and Direct Current, various voltages.
  • Exact composition of the brush depends on the application.Graphite/carbon powder is commonly used. Copper is used for better conductance (rare for AC applications and not on automotive fuel pumps which run on carbon commutators).
  • A carbon brush is typically constructed of carbon with an amorphous structure or graphite which is an allotropic form of carbon.
  • Brush sizes are designated as Thickness x Width x Length of the carbon.
  • It is a conductor of current in an electrical circuit and it is subjected to mechanical forces as it makes physical contact with a surface in motion.
  • Successful carbon brush operation is dependent on many factors but the primary factor is proper contact and mechanical stability.
  • Copper powder is generally used for the manufacture of carbon brushes applied in low voltage motors.
  • In order to increase service life and to minimize susceptibility to electro-motor failure, the carbon brushes must be guided with low friction and wear and without burring.
  • A basic requirement for problem-free movement of the carbon brushes is a smooth and well-designed precisely dimensioned sealing technique.
  • A carbon brush for discharging static electricity of protecting semiconductor devices from damage by the discharge of static electricity from the semiconductor devices.
  • To characterize carbon and graphite materials used for carbon brushes, it is sufficient to state the following material characteristics: Specific Electrical Resistance, hardness and bending strength and bulk density.
  • The specific electrical resistance (SER) of a carbon brush that can be used in a starter motor is greater than 1000µcm, the SER of a carbon brush that can be used in an auxiliary electric motor or an alternator is greater than 10,000µcm, and the SER of a carbon brush that can be used in fuel pump motor is greater than 20,000µcm.
  • The carbon brush assembly includes a carbon brush, a carbon brush seat, a constant force spring and a cover.
  • A constant carbon brush pressure also can maintain proper contact between the carbon brush and a connecting portion to prevent poor electrical contact and generation of sparks.
  • Performs both electrical and mechanical Function of system.

About the Product

  • Carbon Brushes and Conductive Copper Parts.
  • Carbon Brushes.
  • Brush Tubes.
  • Carbon Brushes-Carbon grade classes materials.
  • Carbon Brushes-Crane Wheel.
  • Carbon Brushes- E-Z brush connectors.
  • Carbon Brushes-Surface Rounding Brush.
  • Carbon Brushes-Technical Information.
  • Power Tool Carbon Brushes.
  • Technical Details
  • FAQ

Application  Technology

  • State of the Art Technology
  • How to select Carbon Brushes for motors and generators.
  • Brush on the Machine.
  • Graphite for Carbon Brushes.
  • Performance of Carbon Brushes.
  • First name in carbon brush technology.
  • Overview of Carbon Brushes.
  • Carbon Brushes-Order Guide.
  • Carbon Brushes-Tomorrow?


  • Process Overview
  • The Process of Making Electric Motor Brush
  • Manufacturing Process
  • Wear test
  • Procedure for bedding of Carbon Brushes on electrical machines.
  • Measurement of Carbon brush wear on electric motors.
  • Manufacturing Process and Material Properties of Carbon materials.
  • Maintaining Carbon-brush Collectors.
  • Preparation of Carbon brushes with thermosetting resin binder.
  • Electrical Carbon Brushes from oil palm empty fruit bunches.

Project Information

  • Project Outline - Carbon Brushes.
  • Machinery suppliers
  • Company - Raw materials
  • Company - Raw Materials
  • Company for Technical Collaboration
  • Quality Control
  • Company for Technical Collaboration
  • Storage
  • Consultancy - Market reports
  • Consultancy from New York.

Raw Materials

  • Materials for Carbon Brushes
  • Materials Supplier
  • Carbon.
  • Graphite.
  • Copper Wires.


  • Method for seating Carbon Brushes in motors.
  • Adjusting apparatus for Carbon Brushes on an electric motor.
  • Sliding Contact Arrangement for carbon brushes.
  • Manufacturing carbon brushes for electrical machines.
  • Making Metal-Carbon Brushes for electrical motors.
  • Carbon Brush for discharging static electricity.
  • DC motor with externally mounted carbon brush.
  • Clip for Carbon Brushes.
  • Carbon Brush for an Electrical Machine in a vehicle.
  • Carbon Brush Assembly for electric tool.


  • Guidelines for selection of Carbon Brushes.
  • Specification guide for Carbon Brushes.
  • Technical Guide-Brushes for electrical machines.
  • Carbon Brush Life.
  • Technology designed to reduce brush wear, maintenance.

Company Profile

  • Company from Ireland.
  • Company - Japan
  • American Company
  • Company from Australia.
  • Company1 from Delhi.
  • Company2 from Delhi.
  • Company1 from India.
  • Company2 from India.
  • Company3 from India.
  • Company4 from India.
  • Company from Maharashtra.
  • Company from Mumbai.
  • Company from USA.


  • Carbon Steel Wire Brushes.
  • Electrical Carbon Products.
  • Certification


  • Lead-free carbon brushes for automotive starters.
  • Effect of hardness on the lifetime of graphite brushes used for aircraft starter generators.
  • Wear Rate Reductions in Carbon brushes.


  • Carbon Brushes with Cut-off device and signaling device.
  • Effect of Spring pressure on carbon brush wear rate.
  • Carbon Brushes and brush systems .
  • Supply of carbon brushes for CHP AT GTPS.
  • Carbon Brushes for Elevators.
  • Slip rings and carbon brushes on turbo-alternators.

Market, Suppliers & Uses

  • Carbon Brushes for Fractional horsepower motors.
  • Tender - Sample
  • Products in the Market
  • Supplier from India.
  • Suppliers from China.
  • List of Manufacturers.
  • List of Suppliers.
  • Suppliers from Turkey.
  • Supplier - Europe
  • Suppliers from USA.
  • Japanese Products
  • Canada Situation
  • Schunk Group-Shaping the future together.
  • Carbon brushes for subfractional horsepower motors.
  • Carbon Brushes-Wheel motor brushes.
  • Carbon Brushes-very important parts for carrying current in electrical machines.
  • Quality Carbon Brushes for wind energy.
  • Carbon Brushes for Industrial Motors.
  • Carbon Brushes for Industrial and Railway Application.


Order the CD ROM Today

Primary Information Services
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Ullagaram, Chennai - 600091, India.
 Phone: 91 44 22421080 
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