Newyard Carbon are not only specialized manufacturing carbon brush materials such as electrographite, natural graphite, metal graphite and resin-bonded graphite but also the finished products for wind turbine, generator, industrial and traction motors and power tools as well.
Carbon Brush Materials - Electrographite, Metal Graphite, Nature Graphite and Resin-Bonded Graphite
Vorgestellte Serie
Carbon Brush Materials - Electrographite, Metal Graphite, Nature Graphite and Resin-Bonded Graphite
Apprentice
Metal Graphite
This main raw material used for this class of brushes are electrolytic copper powder and graphite. According to the needs of users, powders of silver, lead and other metals may also be employed.
This class of brushes applicable to low voltage electrical machines with
heavy load and ordinary requirements of commutation. Generally, the peripheral speed should not exceed 30 m/s.
Heritage
This class of brushes consist of various kinds of carbon powders such as carbon black, coke, graphite and so on. They must undergo high
temperature treatment at about 2500℃ to make all kinds of carbonic material convert to a micro-rystalline form of artificial graphite. This class of brushes have excellent characteristic of commutating and self- lubricating, widely applied to all kinds of AC and DC motors with the advantage of long service life and less wear ability of the commutators.
Classical
Natural Graphite
The natural graphite is main raw material of this class of brushes. Here, pitch and resin are used binders.They are baked at about 1000℃. This class of brushes are provided with better lubricating and current- collecting performance. The natural graphite brushes are respectively used with the slip rings of small and medium size DC motor and high speed turbo-generators under steady applications.
Apprentice
Resin Bonded Graphite
This main raw material used for this
class of brushes are artificial graphite
powder. Pitch and resin are used
binders.
This class of brushes applicable to
power tools and home appliance.
Metal Graphite Grades
Metal Graphite - C412
Materialeigenschaften
Klasse: C412
Widerstand (Ohm/um): 0.2-0.25
Rockwell Hardness (HR10): 70-85
Voltage Drop (V): 0.5
Reibungskoeffizient: 0.2
Nennstromdichte: 20
max. Geschwindigkeit (m/s): 20
Pressure in Use (kPa): 20
Hauptanwendung: current collector
Metal Graphite - CG90
Materialeigenschaften
Klasse: CG90 – 90% Cu
Widerstand (Ohm/um): 0.06-0.08
Rockwell Hardness (HR10): 82-90
Voltage Drop (V): 0.4
Reibungskoeffizient: 0.25
Nennstromdichte: 20
max. Geschwindigkeit (m/s): 20
Pressure in Use (kPa): 20
Hauptanwendung:Low voltage AC Commutator machines with slip rings
Metal Graphite - CG82
Materialeigenschaften
Grades: CG82 – 82% Cu
Widerstand (Ohm/um): 0.09-0.1
Rockwell Hardness (HR10): 60-80
Voltage Drop (V): 0.3
Reibungskoeffizient: 0.2
Nennstromdichte: 20
max. Geschwindigkeit (m/s): 20
Pressure in Use (kPa): 20
Hauptanwendung:with low voltage and slip rings of AC commutator machines
Metal Graphite - CG72
Materialeigenschaften
Grades: CG72 – 72% Cu
Widerstand (Ohm/um): 0.6-0.7
Rockwell Hardness (HR10): 75-90
Voltage Drop (V): 1.1
Reibungskoeffizient:<0.2
Nennstromdichte: 15
max. Geschwindigkeit (m/s): 20
Pressure in Use (kPa): 17
Hauptanwendung:DC machines up to 40V,automobile starters and exciting slip rings of asynchronous machines
Metal Graphite - CG60
Materialeigenschaften
Grades: CG60 – 60% Cu
Widerstand (Ohm/um): 2-2.5
Rockwell Hardness (HR10): 80-90
Voltage Drop (V): 1.3
Reibungskoeffizient: 0.25
Nennstromdichte: 15
max. Geschwindigkeit (m/s): 35
Pressure in Use (kPa): 22
Hauptanwendung: automobile starters and exciting slip rings of synchronous machines
Metal Graphite - CG50
Materialeigenschaften
Grades: CG50 – 50% Cu
Widerstand (Ohm/um): 2.5-3.5
Rockwell Hardness (HR10): 70-80
Voltage Drop (V): 1.5
Reibungskoeffizient: 0.25
Nennstromdichte: 15
max. Geschwindigkeit (m/s): 25
Pressure in Use (kPa): 17
Hauptanwendung:DC genertators up to 60V and DC welding machine .etc
Metal Graphite - CG25
Materialeigenschaften
Grades: CG25 – 25% Cu
Widerstand (Ohm/um): 8-10
Rockwell Hardness (HR10): 55-70
Voltage Drop (V): 1.8
Reibungskoeffizient: 0.25
Nennstromdichte: 12
max. Geschwindigkeit (m/s): 20
Pressure in Use (kPa): 17
Hauptanwendung:DC machines up to 80V,small traction motors and slip rings of asynchronous
motors
Electrographite Grades
Electrographite - E17
Materialeigenschaften
Klasse: E17
Widerstand (Ohm/um): 0.2-0.25
Rockwell Hardness (HR10): 70-85
Voltage Drop (V): 0.5
Reibungskoeffizient: 0.2
Nennstromdichte: 20
max. Geschwindigkeit (m/s): 20
Pressure in Use (kPa): 20
Hauptanwendung: Sling rings of high speed turbo-generators
Electrographite - E30
Materialeigenschaften
Klasse: E17
Widerstand (Ohm/um): 38-45
Rockwell Hardness (HR10): 70-80
Voltage Drop (V): 2.6
Reibungskoeffizient: 0.25
Nennstromdichte: 10
max. Geschwindigkeit (m/s): 40
Pressure in Use (kPa): 29
Hauptanwendung: 120-440DC machines automobile generators
Electrographite - E33
Materialeigenschaften
Klasse: E33
Widerstand (Ohm/um): 50-60
Rockwell Hardness (HR10): 78-90
Voltage Drop (V): 2.8
Reibungskoeffizient: 0.25
Nennstromdichte: 12
max. Geschwindigkeit (m/s): 50
Pressure in Use (kPa): 29
Hauptanwendung: Rolling stock motors and main generators, AC commutator motors, and other DC motors
Electrographite - E33N
Materialeigenschaften
Klasse: E33N
Widerstand (Ohm/um): 50-60
Rockwell Hardness (HR10): 80-90
Voltage Drop (V): 2.8
Reibungskoeffizient: 0.2
Nennstromdichte: 12
max. Geschwindigkeit (m/s): 60
Pressure in Use (kPa): 29
Hauptanwendung: Rolling stock motors and main generators, AC commutator motors, and other DC motors
Electrographite - E33F
Materialeigenschaften
Klasse: E33N
Widerstand (Ohm/um): 50-60
Rockwell Hardness (HR10): 85-100
Voltage Drop (V): 2.7
Reibungskoeffizient: 0.2
Nennstromdichte: 12
max. Geschwindigkeit (m/s): 50
Pressure in Use (kPa): 29
Hauptanwendung: traction motors and main generators for locomotives and high speed excites for turbo-generators
Electrographite - E908
Materialeigenschaften
Klasse: E33N
Widerstand (Ohm/um): 60-67
Rockwell Hardness (HR10): 70-75
Voltage Drop (V): 2.9
Reibungskoeffizient: 0.2
Nennstromdichte: 12
max. Geschwindigkeit (m/s): 40
Pressure in Use (kPa): 29
Hauptanwendung: Small DC machines with high angular velocity 110v power tools with high current density
Natual Graphite Grades
Natural Graphite - NG734
Materialeigenschaften
Klasse:NG734
Widerstand (Ohm/um): 17-20
Rockwell Hardness (HR10): 55-70
Voltage Drop (V): 2.5
Reibungskoeffizient: 0.27
Nennstromdichte: 10
max. Geschwindigkeit (m/s): 80
Pressure in Use (kPa): 17
Hauptanwendung:especially suitable for slip rings of large turbogenerators
Pitch-bonded Graphite Grades
Pitch-bonded Graphite - R211
Materialeigenschaften
Klasse:R211
Widerstand (Ohm/um): 17-20
Rockwell Hardness (HR10):55-706
Voltage Drop (V): 2.5
Reibungskoeffizient: 0.27
Nennstromdichte: 10
max. Geschwindigkeit (m/s): 80
Pressure in Use (kPa): 17
Hauptanwendung:DC or AC commutator machines, forklift application
Resin-Bonded Graphite Grades
RESIN-BONDED GRAPHITE - P89
Materialeigenschaften
Klasse: P89
Widerstand (Ohm/um): 1550-1650
Shore-Härte: 20
Dichte (g/cm3): 1.4
Reibungskoeffizient: sehr niedrig
Spannungsabfall: sehr hoch
Nennstromdichte: 11
max. Geschwindigkeit (m/s): 50
Hauptanwendung: 240v Elektrowerkzeuge und Staubsauger <2000w
RESIN-BONDED GRAPHITE - P84
Materialeigenschaften
Klasse: P84
Widerstand (Ohm/um): 900-950
Shore-Härte: 23
Dichte (g/cm3): 1.45
Reibungskoeffizient: sehr niedrig
Spannungsabfall: sehr hoch
Nennstromdichte: 10
max. Geschwindigkeit (m/s):25
Hauptanwendung: 110-V-Elektrowerkzeuge <1600 W
RESIN-BONDED GRAPHITE - P81
Materialeigenschaften
Klasse: P81
Widerstand (Ohm/um): 900-950
Shore-Härte: 18
Dichte (g/cm3): 1.42
Reibungskoeffizient: sehr niedrig
Spannungsabfall: sehr hoch
Nennstromdichte: 10
max. Geschwindigkeit (m/s): 35
Hauptanwendung: 240v power tools <1500w
RESIN-BONDED GRAPHITE - P015
Materialeigenschaften
Klasse: P015
Widerstand (Ohm/um): 900-950
Shore-Härte: 18
Dichte (g/cm3): 1.42
Reibungskoeffizient: sehr niedrig
Spannungsabfall: sehr hoch
Nennstromdichte: 10
max. Geschwindigkeit (m/s): 35
Hauptanwendung: 230V chain saw and jig saw
EQUIVALENT GRADE RECOMMENDATIONS
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