Best Price Concertina Coil 600Mm Dia For Sale
A concertina coil with a 600 mm outer diameter functions as a large‑scale helical spring, providing predictable axial deflection under load. Its geometry allows uniform stress distribution along the
Request a QuoteConcertina Coil 600mm Diameter – Technical Overview
A concertina coil with a 600 mm outer diameter functions as a large‑scale helical spring, providing predictable axial deflection under load. Its geometry allows uniform stress distribution along the wire, making it suitable for buffering heavy impacts in industrial conveyors, crane systems, and large‑scale press equipment.
Key Specifications
Typical parameters for a standard 600 mm concertina coil are listed below. Values can be adjusted according to load requirements and environmental conditions.
- Wire diameter: 20 mm to 45 mm (customizable)
- Pitch (center‑to‑center distance between coils): 150 mm to 300 mm
- Number of active coils: 5 to 12 (depends on free length)
- Material grades: EN 10270‑1‑SH, ASTM A228, or equivalent high‑carbon spring steel
- Surface treatment: phosphating, zinc plating, or polymer coating for corrosion resistance
- Static load capacity: up to 250 kN (dependent on wire size and pitch)
Typical Technical Data
| Parameter | Typical Value | Adjustment Range |
|---|---|---|
| Outer Diameter | 600 mm | ±5 mm (custom) |
| Wire Diameter | 30 mm | 20 mm – 45 mm |
| Pitch | 200 mm | 150 mm – 300 mm |
| Free Length | 1500 mm | 1000 mm – 3000 mm |
| Material | EN 10270‑1‑SH | ASTM A228, DIN 17223, etc. |
Typical Applications
In heavy‑duty material handling, the coil absorbs kinetic energy from moving loads, reducing peak forces transmitted to support structures. Its large diameter enables a low spring rate, providing long travel distance while maintaining consistent force characteristics.
Press and forging lines use the coil as a cushion between the ram and the die, protecting tooling from shock loads. The helical geometry ensures that the load‑deflection curve remains linear over the operating range, simplifying system design.
Offshore cranes and ship‑to‑shore loaders employ concertina coils to mitigate wave‑induced dynamic loads. Corrosion‑resistant coatings extend service life in marine environments, meeting ISO 12944‑5 requirements for C5‑M environments.
Quality Assurance
Each coil undergoes dimensional verification using laser scanning to confirm outer diameter, pitch, and wire tolerance within ±0.2 mm. Material hardness is measured on the Rockwell C scale, targeting HRC 42‑48 for the specified spring steel grades.
Load‑deflection testing is performed on a calibrated universal testing machine at three preload levels (0 %, 50 %, 100 % of rated capacity). Results are recorded and compared against the design curve; deviation must remain within ±5 % across the test range.
Visual inspection follows ASTM E1417 for surface discontinuities, with acceptance criteria limiting surface defects to <0.1 mm depth. Final products are marked with heat‑trace codes for traceability to raw material lots.
Customization Options
Wire diameter, pitch, and total number of coils can be altered to achieve a specific spring rate or solid height. End configurations include ground flat ends, squared ends, or custom fittings such as threaded inserts or eye bolts.
Surface treatments are selectable based on environmental exposure: hot‑dip galvanizing for offshore use, epoxy powder coating for chemical plants, or nitriding for wear‑resistant applications. Length adjustments are possible through coil addition or removal while maintaining the same pitch.
Inquiry
To obtain a quotation or discuss technical suitability for your project, please provide the required load range, travel distance, and any environmental constraints. Our engineering team will respond with a detailed proposal including lead time and pricing.
