Crusher Coil Spring

What is a Crusher Coil Spring ?

A Crusher Coil Spring is a type of heavy duty Coil Spring used in machinery, specifically in Jaw Crusher and Cone Crusher, often used to absorb shock, provide tension, or help with the release of pressure in the system. They help control the motion of movable components like jaw plates, hoppers, and other parts that need to move in a controlled manner while absorbing the high forces generated during crushing operations.

Crusher Coil Spring specification :

1. Raw materials :
   ● Spring Steel : Typically, high-carbon steel (e.g., SAE 1095, 65Mn) or chrome vanadium steel is used for coil springs due to its strength and elasticity.
   ● Alloy Steel: Sometimes alloy steel such as AISI 6150 or AISI 5160 is used for more demanding applications.
2. Dimensions :
   ● Outer Diameter (OD): Varies from 50mm to several hundred millimeters depending on the application.
   ● Inner Diameter (ID): Often slightly smaller than the outer diameter, which is critical to fitting the spring in the designated mount.
   ● Wire Diameter: Usually ranges from 6mm to 30mm depending on the weight and the load requirements of the crusher.
   ● Spring Length: Varies widely depending on the application. Can be anywhere from 150mm to several meters for large crushers.
   ● Spring Constant (Stiffness) : The spring constant (k) is an essential specification that determines the amount of force required to compress or extend the spring by a certain amount. It’s often expressed in N/m (Newtons per meter).
   ● Compression of Springs : Typically have a spring constant ranging from 10 N/mm to 50 N/mm, depending on the required load.
3. Load capacity :
   ● Springs used in crushers must be able to handle significant forces. The load capacity can range from a few tons to several hundred tons, depending on the size and application of the crusher.
   ● Maximum Load: The maximum load the spring can handle before permanent deformation or failure.
4. Free Length and Working Length :
   ● Free Length : The length of the spring when it is not under any load.
   ● Working Length : The length of the spring when it is under normal working conditions, such as in compression during crusher operation.
5. Type of Spring :
   ● Compression Springs : Most coil springs used in crushers are compression springs, designed to resist compressive forces.
   ● Tension Springs: In some specific designs, tension springs might be used.
   ● Torsion Springs: In certain crusher designs, torsion springs might be required for specific mechanisms.
6. Finish and Coating :
   ● Corrosion Resistance : Springs in crushers often operate in harsh environments, so they may be coated with zinc, chrome, or powder-coated for corrosion resistance.
   ● Shot Peening: To improve fatigue strength, many springs are shot-peened to reduce surface stress and increase longevity.
7. Spring rate :
   ● The spring rate describes how much force is required to compress the spring a certain distance, typically in N/mm. A higher spring rate means the spring is stiffer.
8. End type :
   ● Plain ends : Ends of the spring can be left plain or could be designed with closed or ground ends depending on the application.
   ● Ground ends : Sometimes springs have ground ends to provide a flat and stable contact surface.
9. Performance factors :
   ● Fatigue life : Crusher springs are subject to cyclic loading, so fatigue life is an important factor to consider.
   ● Temperature resistance : High temperatures from the crushing process may also require springs with high-temperature resistance.

Crusher Coil Spring manufacturers :

We are leading manufacturers of Crusher Coil Spring upto most heavy duty. Our maximum manufacturing capacity :

Wire Dia. – up to 70 mm.
Outer Dia. – up to 500 mm.
Free Height – up to 1000 mm.
Total Coils – As per user’s requirement.
Load Capacity – up to 40 Tons. per piece.

Raw-material Grades used : Spring Steels as per Indian standard – BS:970 EN-42, BS:970 EN-45, BS:970 EN-47, 50Cr.V4, 50Cr.4V2, 51Cr.V4, 50Cr.MoV4, 50Si7, 55Si7, 60Si7, SUP-9, SUP-9A, SAE-5160, IS:4454 Part-1 Grade-2, IS:4454 Part-1 Grade-2D, Stainless Steel etc. and others similar foreign grades JIS, ASTM etc.

Painting and Coating : Synthetic Enamel Paint, Powder Coating, Phosphate, Zinc Coating etc.