Renewable Design for Car Leaf Spring - China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang

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  • Renewable Design for Car Leaf Spring - China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang
  • Renewable Design for Car Leaf Spring - China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang

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We also offer product sourcing and flight consolidation services. We have our own factory and sourcing office. We can provide you with almost every type of product related to our product range for Car Leaf Spring , Teflon Coated U Bolts , U Bolt Drawing , Our company is dedicated to providing customers with high and stable quality products at competitive price, making every customer satisfied with our products and services.
Renewable Design for Car Leaf Spring - China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang Detail:

This spring assy are widely used in American for trailer .

Spring Measurements Specs

Totally 4 blades , End to End Measurement 1110 mm (Free Length Measurement), Free Arch Measurement (see picture) 105mm,Tolerance range within ±3mm . Middle straight 203mm,4pcs middle pads 200*71*1*12.5(mm).

All datas are obtained by measuring the new produce product .

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Semi-Trailer Tra699 Leaf Spring 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)

1.  Eye Forming /Wrapper Forming

2.  Diamond cutting/ end trimming / width cutting / end tapering

3.  End punching /end grooving / end bending / end forging / eye grinding / end rolling

4.  Center holepunching / Drilling / nibbing

4.   Heat Treatment

1.  Heating

2.  Hardening

3.  Cambering

4.  Quenching

5.  Tempering

5.   Surfacepreparation

1.  Shot peening /stress peening

2.  Primary painting

6.   Eye bushpreparation process

1.  Eye reaming /eye boring

2.  Bush insertion

3.  Bush reaming

7.   Assemble

1.  Presetting &load testing

2.  Finish painting

3.  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:

Renewable Design for Car Leaf Spring - China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang detail pictures

Renewable Design for Car Leaf Spring - China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang detail pictures

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We'll make every effort and hard work being outstanding and excellent, and speed up our techniques for standing during the rank of global top-grade and high-tech enterprises for Renewable Design for Car Leaf Spring - China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang, The product will supply to all over the world, such as: Maldives, San Francisco, Costa Rica, Furthermore, all of our items are manufactured with advanced equipment and strict QC procedures in order to ensure high quality. If you are interested in any of our goods, please don't hesitate to contact us. We will do our best to meet your needs.
    • We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 Stars By Fernando from Russia - 2018.06.26 19:27
    The customer service staff's attitude is very sincere and the reply is timely and very detailed, this is very helpful for our deal,thank you.
    5 Stars By Andy from Switzerland - 2017.04.08 14:55

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