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.

Property Data

Composition	Grade	Bulk Density	Hardness	Electrical resistivity	Flexural strength	Coefficient of friction	Contact voltage drop	Max. peripheral speed	Max. current density	Features/Application
Composition	Grade	ｇ/cm³	HSC	μΩ・m	MPa	Coefficient of friction	V	m/s	A/cm²	Features/Application
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	Good wear resistance. Suitable for traction motors.
	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.

Composition	Grade	Bulk Density	Hardness	Electrical resistivity	Flexural strength	Coefficient of friction	Contact voltage drop	Max. peripheral speed	Max. current density	Features/Application
Composition	Grade	ｇ/cm³	HSC	μΩ・m	MPa	Coefficient of friction	V	m/s	A/cm²	Features/Application
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.
	MF-1001	2.45	20	5.0	28	L	M	30	20	Suitable for use with 14.4 and 18 VDC power tools.

＊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）

Composition	Grade	Bulk Density	Hardness	Electrical resistivity	Flexural strength	Coefficient of friction	Contact voltage drop	Max. peripheral speed	Max. current density	Features/Application
Composition	Grade	ｇ/cm³	HSC	μΩ・m	MPa	Coefficient of friction	V	m/s	A/cm²	Features/Application
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)

Composition	Grade	Bulk Density	Hardness	Electrical resistivity	Flexural strength	Coefficient of friction	Contact voltage drop	Max. speed	Max. current density	Features/Application
Composition	Grade	ｇ/cm³	HSC	μΩ・m	MPa	Coefficient of friction	V	m/s	A/cm²	Features/Application
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-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)

Composition	Grade	Bulk Density	Hardness	Electrical resistivity	Flexural strength	Coefficient of friction	Contact voltage drop	Max. peripheral speed	Max. current density	Features/Application
Composition	Grade	ｇ/cm³	HSC	μΩ・m	MPa	Coefficient of friction	V	m/s	A/cm²	Features/Application
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
	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	Good commutation performance and wear resistance.Suitable for 200-240V cleaners.
	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
	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.