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1.generator carbon brush, motor carbon brush, 2.voltage12V-24V, 3.used for DC motor,auto,generator, 4.different grade as apply - details see: https://www.machineto.com/motor-carbon-brush-generator-carbon-brush-starter-carbon-brush-10236008

Our Generator carbon brushes are made from imported materials with advanced technology in the world. They can be equipped with Automobile Generator, motorcycle generator, Heater, lock and door of auto, reflector motor and windscreen wiper. Generator carbon brushes are widely used in speed reduction motors. The Generator carbon brush from our company has the following advantages: low pressure loss, high tripping force and long life time.

Grade Type	D103	D173	D213	D253	D353	D353L
Resistance	10	13	28	15	42	42
Basic value	100	103	82	85	70	90
Load	196	196	980	588	980	980
Density	1.64	1.60	1.64	1.63	1.58	1.69
Touch V-drop	2.0	2.1	2.4	2.3	2.6	3.0
50hous wearness	0.25	0.20	0.15	0.15	0.2	0.15
C.O.F	0.20	0.25	0.25	0.25	0.25	0.25
Current density	12	12	10	12	12	12
Allowed peripheral speed	40	70	40	45	50	50
Size (mm)	135*120*40	135*120*36	135*120*36	135*120*43	135*120*38	135*120*38
		150*67*43	150*67*34	150*68*36/43	135*120*45	135*120*45
		150*67*34	150*67*43		150*67*35

Grade	Type	SG-4
SG-4	Ash(%)≤	0.13
	Resistance(µΩm)≤	14
	Density(g/cm)≥	1.72
	Compressive strength(Mpa)≥	45
	Flexural strength(Mpa)≥	25
Size	200*200*63/90mm