Product Details

carbon brush EG389P :

Technical parameter

Grade

Density

A/cm³

Resistivity

uΩ·cm

Shore Hardness

Mpa

Transverse Strength

Mpa

Contact Vol.Drop

ΔU(V)

Coef.Of Friction

Current Density

A/cm³

Normal Max.Surface Speed

M/s

EG 389P

1.49

1600

Product Description

1. About material :

Aobo Carbon provide carbon brushes in all kinds of applications for OEM customers and end users. Our customers have proven the good quality can keep in long -term use. We are sure to offer you the suitable material.

Graphite material ---- for slip ring of high-speed turbine.

Metal graphite material --- for high load and low voltage motors with less commutation task.

Resin bonded graphite material--- for small and middle sized DC(Direct Current) motors and generator plant.

Electro graphite material ----has excellent commutating performance and self-lubricated functions, have been widely used in all AC(Alternating Current ) and DC(Direct Current) motors

2. About material original :

---- Original , From Original products manufacturer

----- Abroad one , From Abroad , eg, Germany or American , same as original carbon brush material

----- China similar one, From China local, similar to Original material

3. About difference between China Similar and Abroad one :

----- Density , resistivity , current density and max speed maybe similar or same

----- Lifetime not same . eg, Abroad one can use 1 year, China similar can be up to 6-8 monthes.

Detailed Images

FAQ

1. Why choose us ?

Technical support - Technical people have experience in this period over 35 years.

Material support   - carbon graphite, soft graphite, electrographitic , impregnated graphite ,
  Resin grapihte,  metal graphite,  impreganated metal graphite ,
Natural grpahite ,  Resin bonded .
Producing support - Using professinal machines and technological guidance .

2.Can we use our design ?
Yes, you can. After getting your detial design drawings , we do same .

3. Can we mix the different design products ?
Yes, you can modify.

4. Failure cause ?

Technical hitches	Causation	Repair
Brush spark	1.Commutator deformed	1.Loosen the fastening screws to re-adjust
	2. Copper barbed or sharp edges	2. Re-chamfer
	3. Brush pressure is too small	3. Adjust or replace the spring pressure
Brush overheating	1. Brush too much pressure	1. Adjust or replace the spring pressure
Brush overheating	2. Single Brush pressure imbalance	2. Replacing different carbon brushes
Wear fast	1. Commutator was dirty	1. Clean commutator
	2. Copper barbed or sharp edges obvious	2. Re-chamfer
	3. Load is too small to form an oxide film	3. Improve load or minus number of brushes
	4.Work environment is too dry or too wet	4.Improve the working environment or replacement brush card