Springs
Heavy Duty Kelly Spring
Extra-heavy wire diameter coil springs engineered for vibrating screens and crushers.
Rugged, large-diameter hot-wound and cold-wound compression springs (Kelly springs). Engineered to isolate heavy mechanical shock and vibration in mining screens, shale shakers, forging hammers, and industrial suspension hoppers.
Representative image · Springs
Specifications
Technical profile
- Wire diameter
- 10.0 mm to 50.0 mm heavy alloy spring steel bar stock
- Material grade
- 5160 / 52100 / 50CrV4 / Silico-Manganese Alloy Spring Steel
- Coiling method
- Hot-wound on precision mandrels followed by oil quenching and tempering
- Load capacity
- Engineered for dynamic compressive shock loads exceeding 20 tonnes per spring
- Ends finish
- Precision ground flat and square (70% to 80% contact area) for stable seating
- Protective coating
- Heavy-duty epoxy powder coating or zinc phosphate corrosion protection
Specifications are typical and vary by variant. Share your duty conditions for an exact recommendation.
Key benefits
Why this product
- Absorbs massive dynamic shock loads without coil bottoming or permanent set deformation
- Isolates destructive 3D vibration from vibrating screens, protecting surrounding plant civil foundations
- Hot-wound metallurgy ensures uniform grain structure across ultra-thick spring bar diameters
- Custom color-coded powder coating allows quick visual load-rating identification in maintenance stores
Applications
Typical industries
Oil & GasPlasticsChemical
Related categories
Need this heavy duty kelly spring for your line?
Share your duty conditions and drawings — our team responds with a technical recommendation and a firm quote.