To ensure the smooth operation of your equipment, we have formed our own warehouse of copper-graphite brushes made of materials RC53, RC67, RC73, CG651, CG657, A20, K14Z3, C16, CM5H, CM3H.
In industries, as part of powerful electric drives in conditions of difficult start-up, AC electric motors with a phase rotor (slip-ring motors) are used. The use of these electric machines with limited inrush currents provides the required starting torque and significantly reduces the load on the power supply network.
An integral part of the operation of these collector machines is the constant monitoring of the brush-collector assembly and the timely replacement of consumables - electric brushes, brush holders and slip rings.
Over the past five years, engineers and technologists of our company have tested various graphite brush electric materials used in the manufacture of brushes for collector motors.
ABB High Voltage & Low Voltage Phase Rotor Motors
Menzel High Voltage and Low Voltage Phase Rotor Motors
Helmke High and Low Voltage Phase Rotor Motors
The following copper-graphite materials were agreed with the technical services of enterprises
Pantrac Copper Graphite Materials
material |
density, g / cm³ |
resistance, μOhm |
current density, A / cm² |
Rockwell hardness |
maximum speed , m / s |
bending strength, MPa |
coefficient of friction |
% metal |
RC53 |
3.2 |
1.3 |
10 |
84 |
40 |
thirty |
- |
fifty |
RC67 |
3.8 |
0.4 |
eighteen |
83 |
35 |
35 |
- |
65 |
RC73 |
4.2 |
0.2 |
twenty |
85 |
thirty |
44 |
- |
75 |
Morgan AM Copper Graphite Materials
Material |
density, g / cm³ |
resistance, μOhm · m |
current density, A / cm² |
Shore / Rockwell hardness |
maximum speed , m / s |
bending strength, MPa |
coefficient of friction |
% metal |
CM3H |
4.3 |
0.19 |
12-15 |
12 |
25 |
27 |
0.10 |
75 |
CM5H |
4 , 0 |
0.3 |
1 2 |
fifteen |
thirty |
eighteen |
0.09 |
65 |
Mersen Copper Graphite Materials (Carbon Lorraine)
Material |
density, g / cm³ |
resistance, μOhm · m |
current density, A / cm² |
Shore / Rockwell hardness |
maximum speed , m / s |
bending strength, MPa |
coefficient of friction |
% metal |
Cg651 |
2.95 |
1.3 |
12-14 |
- |
35 |
thirty |
0.12 |
49 |
Cg657 |
4.00 |
0.35 |
12-20 |
- |
thirty |
65 |
0.12-0.20 |
65 |
Sunk Carbon Graphite Copper Materials
Material |
density, g / cm³ |
resistance, μOhm |
current density, A / cm² |
Rockwell hardness |
maximum speed , m / s |
bending strength, MPa |
coefficient of friction |
% metal |
A20 |
2.9 0 |
250 |
eighteen |
85 |
thirty |
- |
0.08-0.22 |
fifty |
K14Z3 |
3 , 3 0 |
150 |
twenty |
110 |
thirty |
- |
0.08-0.15 |
66 |
C16 |
3.25 |
one hundred |
eighteen |
90 |
thirty |
33 |
0.08-0.15 |
fifty |