Wholesale Price Auto Parts - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang

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Good quality comes 1st; assistance is foremost; business enterprise is cooperation" is our business enterprise philosophy which is regularly observed and pursued by our company for Double U Bolt , Trailer Leaf Spring Bushings , U Bolts And Plates , We are highly aware of quality, and have the certification ISO/TS16949:2009. We are dedicated to supply you high quality products with reasonable price.
Wholesale Price Auto Parts - 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 .

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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

material-cutting

1.Material Cutting

Edge-Cutting

4.Edge Cutting

Stress-Peening

7.Stress Peening

Punching

2.Punching

Quenching

5.Quenching

Assembling

8.Assembling

Eye-Rolling

3.Eye Rolling

Tempering

6.Tempering

Painting

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:

Wholesale Price Auto Parts - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang detail pictures

Wholesale Price Auto Parts - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang detail pictures


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With our outstanding administration, powerful technical capability and strict top quality handle procedure, we go on to provide our purchasers with reliable good quality, reasonable selling prices and excellent services. We goal at becoming certainly one of your most responsible partners and earning your gratification for Wholesale Price Auto Parts - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang, The product will supply to all over the world, such as: Panama, Jersey, Slovenia, We'll continue to devote ourselves to market & product development and build a well-knit service to our customer to create a more prosperous future. Please contact us today to find out how we can work together.
  • The enterprise has a strong capital and competitive power, product is sufficient, reliable, so we have no worries on cooperating with them.
    5 Stars By Lindsay from Honduras - 2018.12.11 14:13
    It is really lucky to meet such a good supplier, this is our most satisfied cooperation, I think we will work again!
    5 Stars By Natalie from Uruguay - 2017.12.19 11:10