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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £14.99 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £14.99 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £5.99 | 3 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £14.99 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £14.99 | 7 to 10 working days |
Product Number: 6354
Extension springs with turnable, extra strong loops for high loads In order to be able to use the spring to its maximum, without running the risk of loop breaks, you can use this series of extension springs with hardened loops, which have tapered ends. The loops are loose, and can therefore be turned to any position.
Max load length and temperature Maximum load length Ln applies for static or pseudo static loaded springs operating at temperature up to about 40°C. The relaxation, i.e. the power loss over time, will then stay within acceptable values for most applications. At higher operating temperatures or dynamic life demands, more than 10,000 cycles, the spring should not be loaded as far as Ln. Maximum permitted operating temperature of unalloyed spring steel EN10270-1-SH is about 120 °C.
| Material | EN 10270-1-SH |
|---|---|
| Wire Diameter (WD) | 2,5 mm |
| Outside Diameter (OD) | 20 mm |
| Free Length (FL) | 170 mm |
| Extended Length (EL) | 307 mm |
| Initial Force (F0) | 29 N |
| Rate (R) | 1,6 N/mm |
| Eye Diameter (ED) | 12 mm |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Extension Spring with Turnable Bolt, Outside Diameter 20mm, Free Length 170mm, Metrol - 6354
|
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Standard Delivery: £5.99
Delivery Estimate: 3 to 5 working days
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 6535 | 6516 | 6477 | 6480 | 3869 | 6383 | 3858 | 6382 | 6485 | 6391 | 3830 | 3828 | 6526 | 6443 | 6446 |
| Type | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring | Tension Spring |
| Length | 290mm | 235mm | 155mm | 245mm | 330mm | 180mm | 180mm | 270mm | 225mm | 300mm | 230mm | 110mm | 200mm | 145mm | 235mm |
| Size | 40mm | 35mm | 28mm | 28mm | 35mm | 35mm | 30mm | 30mm | 22mm | 35mm | 17mm | 17mm | 35mm | 17mm | 17mm |
| Length Range | Over 200mm | Over 200mm | 101-200mm | Over 200mm | Over 200mm | 101-200mm | 101-200mm | Over 200mm | Over 200mm | Over 200mm | Over 200mm | 101-200mm | 101-200mm | 101-200mm | Over 200mm |
| Size Range | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 26-50mm | 11-25mm | 26-50mm | 11-25mm | 11-25mm | 26-50mm | 11-25mm | 11-25mm |
A. Extension springs store energy to deliver a pull force when extended, using hook or loop ends to handle axial loads and return to their original shape.
A. Tension springs are commonly used in loft hatches, garage doors, and lever-based mechanisms to provide a return force.
A. Metrol offers tension springs in unalloyed and stainless spring steel—each with specific temperature and load guidelines to ensure optimal performance and lifespan.
A. Use the filters to select wire diameter, free length, and spring force, and review the product PDFs for detailed specs and tolerances before purchasing.
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