Koolborstelveer

Characteristic: 1. Due to the constant force, regardless of the length of the carbon brush and the commutator, the pressure remains the same. 2. Constant force spring reduces carbon brush loss, prolongs the life of carbon brush, and reduces current loss. To 3. Small motors can be designed to reduce the outer diameter of the motor. 4. The length of carbon brush can be increased. To 5. A larger commutator can be used. To 6. Reduce sparks and reduce electromagnetic interference. Constant force spring for single roll carbon brush 1. Carbon brush width 2. Carbon brush height: The spring width...

product details

Characteristic:

1. Due to the constant force, regardless of the length of the carbon brush and the commutator, the pressure remains the same.

2. Constant force spring reduces carbon brush loss, prolongs the life of carbon brush, and reduces current loss. To

3. Small motors can be designed to reduce the outer diameter of the motor.

4. The length of carbon brush can be increased. To

5. A larger commutator can be used. To

6. Reduce sparks and reduce electromagnetic interference.

Constant force spring for single roll carbon brush

1. Carbon brush width

2. Carbon brush height: The spring width must be smaller than the carbon brush height

3. Length of abradable carbon brush: The spring stroke must be greater than the length of the abradable carbon brush

4. Contact pressure required for carbon brush and commutator: required spring force

Constant force spring for double-rolled carbon brush

1. Carbon brush width

2. Carbon brush height: The spring width must be smaller than the carbon brush height

3. The length of the abradable carbon brush: the spring stroke must be greater than the length of the abradable carbon brush

4. Contact pressure required for carbon brush and commutator: required spring force

5. Carbon brush holder spring installation space: the outer diameter of the spring must be smaller than both

Advantages of constant force springs for double-rolled carbon brushes

1. Under the same elastic force, the double-coiled spring is more volume-saving.

2. Because the shape is symmetrical, the output is more stable.

3. The length of the available carbon brushes is increased.

4. The outer diameter of the motor can be reduced.

Installation example：

Double coil constant force spring for carbon brush holder (double eye spring, carbon brush spring)

Single-turn constant force spring (compression spring) for carbon brush holder

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Our Advantages

Raw materials

● Spring products are made of the most stable stainless steel 301 material;

● Deeply cooperate with upstream companies in research and development, start special smelting from billets, better grasp the quality of raw materials;

● We are not limited by material, although special material requirements can also be developed and produced.
Production equipment

● equipped with two special slitting equipment (minimum slitting width 2mm, slitting tolerance ±0.05mm);

● We use precision hardness tester, edge grinding machine, spring coiling machine, heat treatment constant temperature furnace（炉）, special detector（检测器） and a series of professional production lines and testing equipment;

● We are China's exclusive independent research and development of spring coiling machine manufacturers. It has been upgraded from the first generation to the eighth generation, doubling the spring life.

● For example, the average market life of dog leashes is between 2,000 and 6,000 times, and our test results are between 30,000 and 100,000 times.
Production process

● We specialize in the production of stainless steel constant force spring and any variable force spring, with the highest international standards of production technology.

● From raw material slitting, edge grinding, spring winding, shearing, tail processing and heat treatment, all use automatic industrial machines for continuous production.

● The company has obtained 12 utility model patents（实用新型专利）; 1 design patent; A spring fatigue life test bench equipment invention patent.
Design and application technology

● We can fulfill all reasonable customization requirements. At the same time, we have powerful technology to help customers optimize and solve all the problems of spring application.

● We can do structural design for customers, tailored to maximize the function of the spring.

● We have helped many customers solve practical application problems and multiplied the value of their products.