China Gold Supplier for Drop Leaf Springs - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang Detail:
This spring assy are widely used in American for trailer .
Spring Measurements Specs
Totally 8 blades , 1-5 blade Width(mm)*Thickness(mm):76*13, 6-8 blade Width(mm)*Thickness(mm):76*12, End to End Measurement 1124 mm (Free Length Measurement), A side Free Arch Measurement 133.5mm,Tolerance range within ±3mm ,B side Free Arch Measurement 121mm,Tolerance range within ±3mm,Middle straight 203mm .
All datas are obtained by measuring the new produce product .
Conventional Type Tra2260 Spring Leaf Are Made As Follows
Multi-leaf springs are made as follows:
1. Shearing of flatbar
2. Center holepunching / Drilling
3. End Heatingprocess forming (hot & cold process)
a. Eye Forming /Wrapper Forming
b. Diamond cutting/ end trimming / width cutting / end tapering
c. End punching /end grooving / end bending / end forging / eye grinding / end rolling
d. Center holepunching / Drilling / nibbing
4. Heat Treatment
a. Heating b. Hardening c. Cambering d. Quenching e. Tempering
5. Surfacepreparation
a. Shot peening /stress peening b. Primary painting
6. Eye bushpreparation process
a. Eye reaming /eye boring b. Bush insertion c. Bush reaming
7. Assemble
a. Presetting &load testing b. Finish painting c. Marking &packing
Key Points Keep The High Quality
| 1) Raw matrail . |
| Thickness less than 20mm. we choose SUP9/55Cr3/SAE5160H as the product material |
| Thickness from 20-30mm. wE choose SUP11A/50CrVA |
| Thickness more than 30mm. We choose 51CrV4 as the raw material |
| Thickness more than 50mm. We choose 52CrMoV4 as the raw material |
| 2) Quchenging Process |
| We strickly controled the steel temeprure around 800 degree. |
| we swing the spring in the qenching oil among 10 seconds according to the spring thickness. |
| 3)Shot Peening. |
| Each assmembing spring set under stress peening . |
| Fatigue test can reach over 150000 cycus |
| 4) Painting |
| Each leaf under cataphoresis painting. |
| Salt spray testing reach 500hours |
Production Process
1.Material Cutting
4.Edge Cutting
7.Stress Peening
2.Punching
5.Quenching
8.Assembling
3.Eye Rolling
6.Tempering
9.Painting
FAQ
Q1: What type of leaf spring could you produce ?
A: We can produce most kinds of springs in the market. especially on the parabolic springs.
Q2: What material could you supply for leaf spring?
A: Our material grade should be SUP9/SUP9A /SUP11A/51CrV4 /52CrMoV4/ even 55Cr3 and SAE5160H as well .
Q3: How long will be your delivery time?
A: 20-40days. If material stock enough around 20days. if not,would be 40days
Q4: What payment terms are acceptable?
A: TT and LC at sight
Q5: What is the packing?
A: No fumigation wooden pallet . we also can pack according to whatever you request if reasonable.
Q6:How about the surface finishing ?
A : electrophoresis coating (black,red,gray,or as customer’s requests )
Product detail pictures:
Related Product Guide:
It can be a great way to enhance our solutions and service. Our mission would be to build inventive products to consumers with a superior working experience for China Gold Supplier for Drop Leaf Springs - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang, The product will supply to all over the world, such as: Johannesburg, Berlin, Uzbekistan, Our company always concentrate on the development of the international market. We now have a lot of customers in Russia , European countries, the USA, the Middle East countries and Africa countries. We always follow that quality is foundation while service is guarantee to meet all customers.
By Aurora from Ecuador - 2018.06.21 17:11
Reasonable price, good attitude of consultation, finally we achieve a win-win situation,a happy cooperation!
By Belinda from Adelaide - 2017.06.29 18:55