UNITECH ELECTRIC DIVISION

CARBON BRUSHS

CARBON BRUSHS

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. We importing Carbon Brushes from Toyo Tanso. Toyo Tanso's brushes are active across a broad span of industry, centered primarily on small brushes for home appliances and power tools.

Property Data

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 Ｍ Ｍ 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 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 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 Ｌ 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 Ｌ Ｈ 54 20 Good ridability. Suitable for 100-120V high efficiency cleaners.
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-87 1.50 17 380 22 Ｌ Ｈ 54 20
X-88 1.52 14 360 20 Ｌ Ｈ 54 20
X-05 1.48 15 400 18 Ｌ Ｈ 50 20 Good ridability. Suitable for 100-240V high input cleaners.
X-10 1.52 15 270 17 Ｌ Ｈ 50 20
X-78 1.51 17 370 22 Ｌ Ｈ 48 20
X-80 1.51 17 360 22 Ｌ Ｈ 48 20
X-13 1.48 19 700 22 Ｌ Ｈ 50 15 Good commutation performance. Suitable for 120-240V cleaners.
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-95 1.51 19 640 24 Ｌ Ｈ 50 15
X-97 1.45 19 430 14 Ｌ Ｈ 50 20
X-11 1.35 15 1100 14 Ｌ VＨ 54 13 Good commutation performance. Suitable for 200-240V cleaners.
X-73 1.52 24 920 24 Ｌ ＶＨ 40 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 Good commutation performance. Suitable for 200-240V cleaners, small motors.
X-08 1.29 14 1600 14 Ｌ ＶＨ 54 10
X-96 1.31 14 1600 16 Ｌ ＶＨ 54 10
B-2 1.75 25 390 24 Ｌ Ｈ 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 Ｌ Ｈ 35 13 Comparative low resistivity. Suitable for 100-120V power tools.
107 1.62 34 100 29 Ｌ Ｈ 35 13
113 1.58 37 290 27 Ｌ Ｈ 35 13
C-1 1.49 30 330 13 Ｌ Ｈ 35 12 Suitable for 100-120V and 200-240V cleaners.
TX-174 1.55 36 390 24 Ｌ Ｈ 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 Ｌ Ｈ 35 18
108 1.55 36 390 24 Ｌ Ｈ 35 18
110 1.54 37 350 20 Ｌ Ｈ 35 13
118 1.64 34 390 23 Ｌ Ｈ 35 18
129 1.64 34 620 20 Ｌ Ｈ 35 18
106 1.52 33 680 15 Ｍ ＶＨ 35 13 Good commutation performance and wear resistance.Suitable for 200-240V cleaners.
111 1.61 37 600 23 Ｍ ＶＨ 35 13
114 1.62 35 900 20 Ｍ ＶＨ 35 13 Good commutation performance. Suitable for 200-240V power tools and washing machines.
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
116 1.62 35 900 20 Ｍ ＶＨ 35 13 Good commutation performance and wear resistance. Suitable for 200-240V power tools.
119 1.59 44 1300 20 Ｍ ＶＨ 35 13 Good commutation and sliding performance. Suitable for 200-240V power tools and washing machines.
B-1 1.75 47 450 13 Ｌ Ｈ 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 Ｌ Ｈ 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 Ｌ Ｈ 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 Ｌ Ｈ 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.

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