| After-sales Service: | Lifetime |
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| Warranty: | 12 Months |
| Type: | Spring |
| Samples: |
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| Customization: |
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| Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
| Professional technical requirements: | |
| Model | T24 brake spring |
| Rotation | right-handed; |
| Total number of turns | 4.6±1/4 turns, effective number of turns: 3.2 turns; |
| Heat treatment hardness | HRC47-52; |
| Flaw detection treatment | cracks and cavities are not allowed on the surface or the core; |
| Strong pressure standing treatment | slowly compress the spring to H=39MM 3-5 times; |
| Shot peening treatment | intensity 0.4-0.6A, coverage rate ≥90%; |
| After the spring is compressed to 39mm, check the three-point force according to the figure, the first point is for reference only; | |
| Life is 150,000 times without breaking, test range is 38-90mm, frequency is 2-2.5HZ; | |
| Surface treatment: black sprayed plastic ≤0.2mm; | |
| The rest are implemented in accordance with GB 1239.2-89 level 2; | |
| 55CrSi is allowed; | |
| The coaxiality of the opening at both ends of the spring is ≤2mm; | |
| Unmarked tolerance: | Length ±0.1; Angle ±5'. |
Besides LEAF SPRING, we still have other product series, all kind of semi-trailers, container trailers, tippers, bulk powder tanker and fuel tanker, sanitation vehicles and relating parts.
. Long Life span
· Fast Delivery
· Online Payment
· Small Order Welcome
· 100%waterproof
· After Saled Service 24*7
Suppliers with verified business licenses
Audited Supplier 
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