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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.

Carbon Brush
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Property Data

Electro Graphite

CompositionGradeBulk DensityHardnessElectrical
resistivity		Flexural
strength		Coefficient of frictionContact voltage dropMax. peripheral speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Electro Graphite 401 1.68 18 9 10 M M 30 10
502 1.77 51 11 37 Ｍ Ｍ 25 10
503 1.68 46 13 29 M M 30 10
176 1.62 28 14 16 M M 45 12
BZ-229 1.60 23 22 11 M M 40 12
BZ-256 1.61 28 19 14 M M 40 12
213 1.61 32 23 16 M M 40 12
321 1.74 62 34 31 M M 35 10
TH-03 1.75 68 40 35 M M 35 10
351A 1.63 49 47 22 H M 40 10
641 1.64 59 75 12 H M 40 10
CompositionGradeBulk DensityHardnessElectrical
resistivity		Flexural
strength		Coefficient of frictionContact voltage dropMax. peripheral speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Graphite 402 1.71 24 10 18 M M 25 10
801 1.65 30 35 19 M M 45 15
TR-52 1.74 30 14 16 M M 40 12
TR-19 1.51 33 200 19 M M 40 12

＊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.

Copper Graphite

CompositionGradeBulk DensityHardnessElectrical
resistivity		Flexural strengthCoefficient of frictionContact voltage dropMax. peripheral speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Copper Graphite I M-90 6.30 15 0.32 108 M VL 20 25
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-1 5.41 12 0.08 42 Ｌ VL 30 25
M-1F 5.30 18 0.15 49 Ｌ VL 30 25
M-2H 4.93 13 0.10 34 Ｌ 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
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
M-550 2.96 25 2.50 39 M L 35 15
M-750 2.32 23 6.00 32 M L 35 15
788 2.02 23 9.00 23 M M 45 12
M-2TB 5.74 12 0.48 65 M VL 25 20
M‐1B 5.30 10 0.10 43 Ｌ VL 30 25
M-2B 4.34 13 0.28 31 L VL 30 20
M-4B 3.43 20 1.30 32 L L 30 18
M-1C 5.15 13 0.10 59 L VL 30 25
M-2C 4.35 13 0.32 34 L VL 30 20
M-4C 3.45 20 1.10 45 L L 30 18
M-550C 2.96 25 2.50 39 M L 35 15
BW-03P 2.75 25 1.70 35 M L 35 15
CompositionGradeBulk DensityHardnessElectrical
resistivity		Flexural
strength		Coefficient of frictionContact voltage dropMax. peripheral speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Copper Graphite Ⅱ MF-302 2.65 18 3.00 23 M L 30 20
MF-501 3.00 20 0.90 28 L L 30 20
MF-101 2.90 18 2.20 28 M L 30 20
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
MF-401 2.67 18 10.0 21 M M 30 20
MF-204 3.78 15 0.30 40 M L 30 25
MF-205 3.00 20 0.80 28 M L 30 20
MF-701 2.26 18 10.0 30 M M 30 20
MF-201 2.25 10 30.0 23 M M 30 15
MF-601 2.05 10 50.0 23 M M 30 15
MF-1001 2.45 20 5.0 28 L M 30 20
Composition Grade Bulk Density Hardness Electrical
resistivity		 Flexural
strength		 Coefficient of friction Contact voltage drop Max. peripheral speed Max. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Copper GraphiteⅢ TM-08 1.78 37 400 26 L L 30 20
MK-01 2.07 17 65 38 L L 40 20
MK-10 2.33 18 6 43 L L 40 20
MK-11 2.43 16 3.5 42 L L 40 20
MK-12 2.33 18 6.5 45 L L 40 20

＊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）

Silver Graphite

CompositionGradeBulk DensityHardnessElectrical resistivityFlexural strengthCoefficient of frictionContact voltage dropMax. peripheral speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Silver Graphite SX-50 3.20 15 2.70 29 M VL 20 12
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)

Resin bonded Graphite

CompositionGradeBulk DensityHardnessElectrical resistivityFlexural strengthCoefficient of frictionContact voltage dropMax. speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Resin bonded Graphite X-03 1.50 12 200 15 Ｌ Ｈ 54 20
X-09 1.52 14 260 15 Ｌ Ｈ 54 20
X-17 1.54 15 330 18 Ｌ Ｈ 54 20
X-72 1.47 19 380 14 Ｌ Ｈ 48 20
X-88 1.52 14 360 20 Ｌ Ｈ 54 20
X-05 1.48 15 400 18 Ｌ Ｈ 50 20
X-10 1.52 15 270 17 Ｌ Ｈ 50 20
X-80 1.51 17 360 22 Ｌ Ｈ 48 20
X-13 1.48 19 700 22 Ｌ Ｈ 50 15
X-24 1.53 16 440 28 Ｌ Ｈ 50 15
X-26 1.53 23 340 23 Ｌ Ｈ 50 15
X-85 1.48 20 400 14 Ｌ Ｈ 48 20
X-89 1.53 19 350 21 Ｌ Ｈ 48 20
X-93 1.50 18 640 27 Ｌ Ｈ 50 15
X-11 1.35 15 1100 14 Ｌ VＨ 54 13
X-91 1.35 15 1100 17 Ｌ ＶＨ 54 13
X-94 1.36 14 1200 17 Ｌ ＶＨ 54 13
X-04 1.36 17 1600 11 Ｌ ＶＨ 54 10
X-14 1.35 15 1100 17 L VH 54 10
X-78 1.51 17 370 22 Ｌ Ｈ 48 20
X-23 1.44 19 650 17 L H 50 15
X-73 1.52 24 920 24 Ｌ ＶＨ 40 13
B-2 1.75 25 390 24 Ｌ Ｈ 25 8

＊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)

Carbon Graphite

CompositionGradeBulk DensityHardnessElectrical resistivityFlexural strengthCoefficient of frictionContact voltage dropMax. peripheral speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2
Carbon Graphite C-3 1.62 35 240 24 Ｌ Ｈ 35 13
107 1.62 34 100 29 Ｌ Ｈ 35 13
113 1.58 37 290 27 Ｌ Ｈ 35 13
130 1.74 27 70 20 L H 35 20
C-1 1.49 30 330 13 Ｌ Ｈ 35 12
TX-174 1.55 36 390 24 Ｌ Ｈ 35 18
105S 1.55 36 390 24 Ｌ Ｈ 35 18
108 1.55 36 390 24 Ｌ Ｈ 35 18
118 1.64 34 390 23 Ｌ Ｈ 35 18
129 1.64 34 620 20 Ｌ Ｈ 35 18
111 1.61 37 600 23 Ｍ ＶＨ 35 13
114 1.62 35 900 20 Ｍ ＶＨ 35 13
122 1.62 42 840 22 Ｍ ＶＨ 35 13
124 1.60 47 790 26 Ｍ ＶＨ 35 13
127 1.53 33 850 21 Ｍ ＶＨ 35 13
119 1.59 44 1300 20 Ｍ ＶＨ 35 13
B-1 1.75 47 450 13 Ｌ Ｈ 25 8
C-2 1.55 44 660 17 Ｌ Ｈ 25 10
C-2N 1.58 18 660 14 Ｌ Ｈ 25 10
FX-08 1.66 32 590 19 Ｌ Ｈ 25 10
CompositionGradeBulk DensityHardnessElectrical resistivityFlexural strengthCoefficient of frictionContact voltage dropMax. peripheral speedMax. current density
Mg/m3 HSC μΩ・m MPa V m/s A/cm2

＊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.

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