Juneng can customize various industrial compression springs for customers upon request. We offer compression springs with a broad range of diameters, which are suitable for fitness equipment, medical machinery, elevators, electronics, and other products.

• wire diameter
• outer diameter; inner diameter; mean diameter
• free height
• number of total coils; number of active coils
• materials
• requirements on surface treatments

Before bulk-production, we can offer samples to clients. Production will be carried out only after testing and approval.

Some examples are as follows:

These springs are often used as buffer springs for automobile suspension systems. The diameters range from 10mm to 20mm. Automobile suspension springs are elastic components on the car's suspension, connecting the axle to the frame. The spring absorbs some of the vertical load during operation as well as restraining shocks caused by uneven road surfaces. We can produce custom suspension springs based on your material and diameter demands.

Material: chrome silicon spring steel 55CrSi

55CrSi spring steel is usually made into high-stressed springs, which possess outstanding mechanical properties, fatigue resistance and anti-relaxation properties. In the process that 55CrSi spring steel is made into springs, an oil quenching and tempering process is needed. The quenching medium, oil, ensures great hardenability and decreases temper embrittlement and overheating sensitivity.

Because 55CrSi has a relatively low overheating sensitivity, it can function well in conditions up to 300 degrees centigrade.

Performance parameters:
Hardening temperature 950℃
Tempering temperature 445℃
Quenching medium: oil
Tensile strength ≥1862MPA
Yield strength ≥1666MPA
Reduction of area ≥45%

The diameter of elevator buffer springs normally ranges from 10mm to 20mm. Elevator buffer spring, the main component of spring buffer, is assembled in the elevator system spring buffer for cushioning and absorbing shocks. The spring buffer will rebound after buffering, so it is only applicable in low-speed elevator systems with a rated operating speed under 1.0m/s.

We can produce custom elevator buffer springs according to consumer requirements on materials and diameter.

Material: 70# spring steel

70# spring steel is a high grade carbon structural steel. Compared to 65# spring steel, 70# has similar properties but better performance in elasticity and strength.

Performance parameters for 70# spring steel:
Hardening temperature 830℃
Tempering temperature 480℃
Quenching medium: oil
Tensile strength ≥1029MPA
Yield strength ≥833MPA
Reduction of area ≥30%