Product Description
Carbon brush 25.4*38.1*102mm is a type of electric brush. Due to the rotation of the rotor, the electric brush always rubs against the commutation ring, and at the moment of commutation, it also produces electric spark erosion, so the electric brush is a vulnerable part in DC motors.
Product Parameters
Type |
resistivity
μΩ·m |
Rockwell hardness steel ball 10mm |
volume density g/cm3 |
Short circuit commutator test |
Basic value |
Load N |
Contact voltage drop of a pair of brushes V |
50h wear and tear ≤mm |
frictional coefficient ≤ |
current density
A/ cm2 |
J201 |
3.5 |
90 |
588 |
2.95 |
1.5 |
0.18 |
0.25 |
15 |
J203 |
8.8 |
75 |
588 |
2.21 |
1.8 |
0.15 |
0.20 |
12 |
J204 |
0.6 |
95 |
588 |
4.04 |
1.1 |
0.30 |
0.20 |
15 |
J204A |
0.8 |
90 |
588 |
4.05 |
1.1 |
0.30 |
0.20 |
15 |
J205 |
6 |
87 |
588 |
3.2 |
≤2 |
0.50 |
0.25 |
15 |
J205A |
2.5 |
89 |
588 |
3.2 |
≤2 |
0.50 |
0.25 |
15 |
J206 |
4 |
93 |
588 |
2.70 |
1.5 |
0.30 |
0.20 |
15 |
Detailed Photos

Product Features:
> The carbon brush 25.4*38.1*102mm has good commutation performance and long service life.
> Carbon brush 25.4*38.1*102mm has good conductivity, thermal conductivity, and lubrication performance
> Carbon brush 25.4*38.1*102mm has a certain mechanical strength and the instinct for commutation sparks
Applications and Features:
Carbon brush 25.4*38.1*102mm is used on the commutator or slip ring of a motor as a sliding contact for exporting and introducing current. It has good conductivity, thermal conductivity, and lubrication properties, and has a certain mechanical strength and the instinct for commutation sparks. Almost all motors use carbon brushes, which are an important component of the motor. Widely applicable to various AC and DC generators, synchronous motors, battery DC motors, crane motor collector rings, various types of welding machines, and so on.

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Packaging & Shipping
Standard & solid packaging ensures your goods safety.

Various professional packages at your choice
Multiple choice of reliable and cost-effective shipping methods available.
Company Profile
- ABOUT US -
Dongfang Yoyik Engineering Co., Ltd is located in Deyang, Sichuan, China's heavy equipment base, was founded in 2004. The company is a professional power plant spare parts manufacturer and supplier. Our products are applicable for many thermal power plants, hydropower plants, metallurgic industrial power plant, cement plant power house, aluminum plant power house, and coal mill power plants.
From advanced precision electric elements and components to highly-customized metal items, you can find all the needed for a power plant from Yoyik.
Yoyik is the exclusive agent of W.M. Nugent CO Inc for selling Nugent filter elements and filtration system products in China. The company also has great advantages in of many hydraulic products, including pumps, valves, sealing materials, etc. the brands include Eaton, Vickers, Moog, star, copaltite, temp-tite, 707, etc.
Our Advantages
- TECHNICAL PATENTS -
- OUR ADVANTAGE -
- COOPERATIVE INDUSTRIES -
Yoyik offers wide range of spare parts for customers in different industries:
FAQ
- ORDER NOTES -
√ Model Selection
Before purchasing, please ensure that the model specifications you provide are complete or that the drawings have been drawn so that you can provide timely and accurate quotations.
√ Quality Assurance
We promise to provide high-quality products and after-sales service. If there are any quality issues, please contact us promptly.
√ Secure Transactions
We sell on MIC, provide a secure and reliable trading environment, and accept multiple payment methods to facilitate your purchase.
- FAQ -
- Are you trading company or manufacturer?
We are factory located in Deyang, China.
- How long is your delivery time?
Generally it is 2-5 days if the goods are in stock. Or it is 7-21 days if the goods are not in stock, it is according to quantity.
- Do you provide samples? Is it free or extra?
Sorry we do not offer samples.
- What price terms do you accept?
Our company can accept all trading manners, eg. EXW, FOB, CIF etc
- What payment terms do you accept?
We accept T/T.