Carbon Brush

Because of the sliding contact they make, motor brushes play an important part in flowing electric current between stationary and rotary parts. Brush performance greatly determines the performance of rotary equipment such as motors and generators, therefore brushes must be carefully selected. Toyo Tanso's brushes are active across a broad span of industry, centered primarily on small brushes for home appliances and power tools.

photo of Carbon Brush

Property Data

button.cat.e.jpg  product inquiry

CompositionGradeBulk DensityHardnessElectrical
resistivity
Flexural
strength
Coefficient of frictionContact voltage dropMax. peripheral speedMax. current densityFeatures/Application
g/cm3 HSC μΩ・m MPa V m/s A/cm2
Electro Graphite 401 1.68 18 9 10 M M 30 10 Good film formation. Suitable for slip rings that easily generate streaking.
502 1.77 51 11 37 25 10 Good roughing resistance because of fine grain isotropic structure. Suitable for low speed, small capacity DC motors and slip rings.
503 1.68 46 13 29 M M 30 10 Same as 502, good roughing resistance because of fine grain isotropic structure. Suitable for small/med capacity motors of faster speed than 502.
176 1.62 28 14 16 M M 45 12 Good film formation.Good commutation performance. Suitable for DC motors up to medium capacity.
BZ-229 1.60 23 22 11 M M 40 12 Moderate film adjusting function. Suitable for medium and higher capacity mill motors.
BZ-256 1.61 28 19 14 M M 40 12 Better film formation than BZ-229. Suitable for medium and higher capacity mill motors.
213 1.61 32 23 16 M M 40 12 Better film adjusting effect than 176. Suitable for DC motors up to medium capacity.
321 1.74 62 34 31 M M 35 10 Good wear resistance. Suitable for traction motors.
TH-03 1.75 68 40 35 M M 35 10
351A 1.63 49 47 22 H M 40 10 Standard material for commutation brushes. Suitable for medium capacity DC motors.
641 1.64 59 75 12 H M 40 10 Suitable for difficult commutation high capacity DC motors and universal motors.
Graphite 402 1.71 24 10 18 M M 25 10 Has film adjusting effect. Suitable for thick film slip rings.
801 1.65 30 35 19 M M 45 15 Good wear resistance. Suitable for pump motors for power steering.
TR-52 1.74 30 14 16 M M 40 12 Better commutation performance than 788. Suitable for forklifts of 48V or more.
TR-19 1.51 33 200 19 M M 40 12 Good wear resistance. Suitable for 3-phase commutator motor.

*Coefficient of friction : H...0.25~, M...0.20~0.25 (measurement condition/ Slip ring : Copper, Speed : 9.3m/s, Current : 0A)
*Contact voltage drop : M...0.5~1.0V/pc (measurement condition/Slip ring : Copper, Speed : 9.3m/s, Current : DC10A/cm2
*The colored grades use imported materials.

CompositionGradeBulk DensityHardnessElectrical
resistivity
Flexural strengthCoefficient of frictionContact voltage dropMax. peripheral speedMax. current densityFeatures/Application
g/cm3 HSC μΩ・m MPa V m/s A/cm2
Copper Graphite I M-90 6.30 15 0.32 108 M VL 20 25 High strength copper alloy type. Suitable for contacts and grounds.
M-1T 6.19 13 0.27 108 M VL 22 22
M-2T 5.70 15 0.50 80 M VL 25 20
M-1H 6.83 6 0.04 87 M VL 25 20 High copper content. Very low temperature rise and contact voltage drop. Suitable for high electrical capacity generators and motors.
M-1 5.41 12 0.08 42 VL 30 25
M-1F 5.30 18 0.15 49 VL 30 25
M-2H 4.93 13 0.10 34 VL 30 20
M-2HF 4.80 18 0.33 44 M VL 30 20
M-2 4.40 15 0.50 29 L VL 30 20 The copper content amount is next to M1, M-2H class and good wear resistance. Suitable for large capacity generators and slip rings for general rotary machine.
M-2F 4.35 15 0.50 44 M VL 30 20
M-3H 4.04 16 0.70 29 M VL 30 18
M-3HF 4.05 20 0.60 44 M VL 30 18
M-3 3.78 17 1.00 29 L VL 30 18
M-4 3.48 17 2.00 25 L L 30 18 Middle grade between graphite and metal graphite and has features of both. In particular, it is superior in roughing resistance. It is Suitable for small/med capacity generators and motors.
M-550 2.96 25 2.50 39 M L 35 15 Good wear resistance. It is particularly Suitable for stainless steel slip rings.
M-750 2.32 23 6.00 32 M L 35 15
788 2.02 23 9.00 23 M M 45 12 Good dementional stability in high temperature. Suitable for forklifts of 48V or less.
M-2TB 5.74 12 0.48 65 M VL 25 20 Same application as the above M-1 and M-2. But does not contain lead.
M‐1B 5.30 10 0.10 43 VL 30 25
M-2B 4.34 13 0.28 31 L VL 30 20
Copper Graphite Ⅱ MF-302 2.65 18 3.00 23 M L 30 20 Suitable for automobile DC 12V fan.
MF-501 3.00 20 0.90 28 L L 30 20 Suitable for automobile DC 12V winch.
MF-101 2.90 18 2.20 28 M L 30 20 Suitable for DC19.2V cleaners.
MF-202 2.05 10 38.0 23 H M 30 15
MF-203 2.05 10 30.0 23 L M 30 15
MF-301 2.40 15 10.0 23 M M 30 20 Suitable for DC 24V cleaners.
MF-401 2.67 18 10.0 21 M M 30 20 Suitable for DC 19.2V cleaners.
MF-204 3.78 15 0.30 40 M L 30 25 Suitable for DC7.2V power tools.
MF-205 3.00 20 0.80 28 M L 30 20 Suitable for DC 24V power tools.
MF-701 2.26 18 10.0 30 M M 30 20 Suitable for DC22-36V power tools.
MF-201 2.25 10 30.0 23 M M 30 15 Suitable for household coffee mills.
MF-601 2.05 10 50.0 23 M M 30 15 Suitable for electric wheelchair.

*Coefficient of friction : H...0.25~  M...0.20~0.25  L...~0.20 (measurement condition/ Slip ring : Copper, Speed : 9.0m/s, current : 0A)
*Contact voltage drop : M...0.5~1.0V/pc  L...0.25~0.5V/pc  VL...0.25V/pc and below
(measurement condition/Slip ring : Copper, Speed : 9.0m/s, Current : DC10A/cm2

CompositionGradeBulk DensityHardnessElectrical resistivityFlexural strengthCoefficient of frictionContact voltage dropMax. peripheral speedMax. current densityFeatures/Application
g/cm3 HSC μΩ・m MPa V m/s A/cm2
Silver Graphite SX-50 3.20 15 2.70 29 M VL 20 12 Very low temperature rise and contact voltage drop. Suitable for low voltage, low current tachometers and grounds contacts.
SX-70 4.45 15 0.25 40 M VL 20 15
SX-90 6.85 18 0.05 84 M VL 20 22

※Coefficient of friction : M...0.20~0.25 (measurement condition/Slip ring : Copper, Speed : 9.0m/s, Current : 0A)
※Contact voltage drop : VL...0.25V/pc and below (measurement condition/Slip ring : Copper, Speed : 9.0m/s, Current : DC10A/cm2)

CompositionGradeBulk DensityHardnessElectrical resistivityFlexural strengthCoefficient of frictionContact voltage dropMax. speedMax. current densityFeatures/Application
g/cm3 HSC μΩ・m MPa V m/s A/cm2
Resin bonded Graphite X-03 1.50 12 200 15 54 20 Good ridability. Suitable for 100-120V high efficiency cleaners.
X-09 1.52 14 260 15 54 20
X-17 1.54 15 330 18 54 20
X-72 1.47 19 380 14 48 20
X-87 1.50 17 380 22 54 20
X-88 1.52 14 360 20 54 20
X-05 1.48 15 400 18 50 20 Good ridability. Suitable for 100-240V high input cleaners.
X-10 1.52 15 270 17 50 20
X-78 1.51 17 370 22 48 20
X-80 1.51 17 360 22 48 20
X-13 1.48 19 700 22 50 15 Good commutation performance. Suitable for 120-240V cleaners.
X-85 1.48 20 400 14 48 20
X-89 1.53 19 350 21 48 20
X-93 1.50 18 640 27 50 15
X-95 1.51 19 640 24 50 15
X-97 1.45 19 430 14 50 20
X-11 1.35 15 1100 14 VH 54 13 Good commutation performance. Suitable for 200-240V cleaners.
X-73 1.52 24 920 24 VH 40 13
X-91 1.35 15 1100 17 VH 54 13
X-94 1.36 14 1200 17 VH 54 13
X-04 1.36 17 1600 11 VH 54 10 Good commutation performance. Suitable for 200-240V cleaners, small motors.
X-08 1.29 14 1600 14 VH 54 10
X-96 1.31 14 1600 16 VH 54 10
B-2 1.75 25 390 24 25 8 Suitable for juicers, dryers. Moldable by press to size up to 18mm length max.

※Coefficient of friction : L...~0.20 (measurement condition/Current density : AC10A/cm2, Speed : 20m/s, Spring pressure : 50kPa)
※Contact voltage drop : VH...3.0V/pc and over H...2.0~3.0V/pc
(measurement condition/Current density : AC10A/cm2, Speed : 20m/s, Spring pressure : 50kPa)

CompositionGradeBulk DensityHardnessElectrical resistivityFlexural strengthCoefficient of frictionContact voltage dropMax. peripheral speedMax. current densityFeatures/Application
g/cm3 HSC μΩ・m MPa V m/s A/cm2
Carbon Graphite C-3 1.62 35 240 24 35 13 Comparative low resistivity. Suitable for 100-120V power tools.
107 1.62 34 100 29 35 13
113 1.58 37 290 27 35 13
C-1 1.49 30 330 13 35 12 Suitable for 100-120V and 200-240V cleaners.
TX-174 1.55 36 390 24 35 18 Good commutation performance, wear resistance. Good breaking action. Suitable for 100-120V and 200-240V power tools and cleaners.
105S 1.55 36 390 24 35 18
108 1.55 36 390 24 35 18
110 1.54 37 350 20 35 13
118 1.64 34 390 23 35 18
129 1.64 34 620 20 35 18
106 1.52 33 680 15 VH 35 13 Good commutation performance and wear resistance.Suitable for 200-240V cleaners.
111 1.61 37 600 23 VH 35 13
114 1.62 35 900 20 VH 35 13 Good commutation performance. Suitable for 200-240V power tools and washing machines.
122 1.62 42 840 22 VH 35 13
124 1.60 47 790 26 VH 35 13
127 1.53 33 850 21 VH 35 13
116 1.62 35 900 20 VH 35 13 Good commutation performance and wear resistance. Suitable for 200-240V power tools.
119 1.59 44 1300 20 VH 35 13 Good commutation and sliding performance. Suitable for 200-240V power tools and washing machines.
B-1 1.75 47 450 13 25 8 Suitable for small power tools and juicers. Moldable by press size to up to 12mm max.
C-2 1.55 44 660 17 25 10 Suitable for small power tools and juicers. Moldable by press size to up to L15mm max.
C-2N 1.58 18 660 14 25 10 Suitable for small power tools and juicers. Moldable by press size to up to L15mm max. Better noise prevention and film adjusting effect than C-2.
FX-08 1.66 32 590 19 25 10 Suitable for small power tools and juicers. Moldable by press size to up to 18mm max. Better noise prevention and film adjusting effect than C-2.

※Coefficient of friction : M...0.20.~0.25 L...0.20 and below
(measurement condition/Current density : AC10A/cm2, Speed : 20m/s, Spring pressure : 50kPa)
※Contact voltage drop : VH...3.0V/pc and over H...2.0~3.0V/pc
(measurement condition/Current density : AC10A/cm2, Speed : 20m/s, Spring pressure : 50kPa)
The max speed and current density vary depending on the commutator and slip ring condition and use condition.
The above applications are some examples. Please contact our sales department to consult on selecting the most appropriate grade.