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Carbon brushes for electrical machines

Carbon brushes are special conductive parts of a current collector, which are used for current supply in collectors and collector rings of electric rotating machines. 
During existence of  LEG Ltd. company has created carbon brush materials for all modern areas of application. We think that our offered solutions are the most efficient in the majority of application areas in the world for today.
 
For convenience of consumers we offer the classification of carbon brushes materials according to basic conditions of brush movement but not according to the technology of production.  

Within scopes of the class carbon brushes differ in price and quality characteristics. That’s why every client of ours will be able to find the qualitative production for reasonable prices for any area of application.

Carbon brushes manufactured by LEG Ltd.

The brush grades and technical characteristics of carbon brushes are manufactured by LEG Ltd.

Brush grade
Resistivity of brush material, (µΩ*m)
Contact voltage 
drop (sum of both polarities), В
Friction 
Coefficients
Wearing rate, mm, no moreSurface Speed, m/sNormal Current Density, A/cm²Spring 
pressure, kPa
BDH 30from 5 to 20from 0,9 to 2,30,200,308012from 15 to 25
BDH 40from 25 to 45from 0,8 to 3,00,200,304012from 15 to 40
BDH 50 
BDH 50F
from 40 to 85from 1,0 to 3,30,200,305015from 35 to 45
MGfrom 0,03 to 0,12from 0,1 to 0,30,200,805050from 15 to 25
MG-4from 0,3 to 1,3from 0,7 to 1,60,200,305040from 20 to 40
MGSOfrom 0,1 to 0,3from 0,1 to 0,350,240,605045from 15 to 40
M1from 3 to 13from 1,0 to 1,80,250,185030from 15 to 50
M1Afrom 1,5 to 8from 0,8 to 1,80,220,185030from 25 to 70
EG 8220from 42 to 72from 2,3 to 3,60,200,306015from 20 to 60
EG 3003from 10 to 20from 1,1 to 2,30,150,309015from 11 to 25
EG 4003from 30 to 50from 0,7 to 2,30,150,304012from 26 to 40
EG 5003from 42 to 85from 2,0 to 3,30,200,305014from 18 to 60
EG 5010from 30 to 65from 1,0 to 2,60,150,305015from 25 to 50
EG 5020from 30 to 65from 0,8 to 2,50,160,305015from 35 to 55
EG 313from 42 to 52from 2,3 to 3,00,120,305012from 17 to 30
LFC 554from 17 to 23from 2,3 to 3,00,20,309013from 9 to 20
F2003from 5 to 16from 1,2 to 2,50,200,308017from 10 to 25
FE6Xfrom 55 to 100from 1,6 to 3,60,220,255530from 25 to 60
EF 61from 50 to 100from 1,5 to 3,20,230,285515from 20 to 50
EF-68from 38 to 78from 1,6 to 3,80,230,252030from 25 to 60
5015
EG 4010from 20 to 50from 0,8 to 2,40,160,34014from 25 to 40
EG 4012from 25 to 60from 1,0 to 3,30,170,34012from 30 to 50
EG 5012from 27 to 65from 1,1 to 3,60,160,35512from 35 to 55
EG 9040from 10 to 20from 1,0 to 2,20,150,34015from 30 to 40
EG2Аfrom 12 to 26from 0,9 to 1,90,230,407018from 20 to 50
EG2АFfrom 13 to 25from 1,1 to 2,10,230,409018from 15 to 25
EG4from 6 to 16from 0,8 to 2,00,250,608020from 15 to 25
EG 8from 36 to 50from 1,0 to 1,80,250,407015from 15 to 40
EG14from 20 to 38from 1,1 to 2,10,250,407020from 20 to 50
EG61from 25 to 45from 1,3 to 3,10,170,407021,5from 25 to 50
EG61Аfrom 36 to 72from 1,5 to 3,20,150,307022from 20 to 50
EG64from 30 to 65from 1,0 to 2,60,150,307020from 25 to 60
EG71from 20 to 35from 1,1 to 2,10,30,407020from 20 to 30
EG74from 35 to 75from 1,2 to 2,40,220,407022from 17,5 to 50
EG84from 30 to 70from 1,5 to 3,50,190,407022from 20 to 60
EG841from 60 to 80from 1,7 to 3,70,170,357022from 20 to 60
EG85from 35 to 75from 1,6 to 2,60,200,407022from 17,5 to 50
G3from 8 to 20from 0,6 to 1,40,300,508015from 15 to 25
G33no more 900from 3,4 to 6,00,25-6010from 20 to 60
MGS21Nno more 0,5 no more 0,6--5025from 15 to 40
MGS5from 2 to 15from 0,7 to 1,90,220,405030from 20 to 50
611ОМfrom 8 to 28from 0,7 to 1,70,30,409025from 12 to 25