Factory wholesale TRA Type Leaf Spring - High quality china manufacturer SUP9 steel leaf spring for trailer 2728 – Jiachuang

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  • Factory wholesale TRA Type Leaf Spring - High quality china manufacturer SUP9 steel leaf spring for trailer 2728 – Jiachuang
  • Factory wholesale TRA Type Leaf Spring - High quality china manufacturer SUP9 steel leaf spring for trailer 2728 – Jiachuang

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Our company promises all users of the first-class products and the most satisfying post-sale service. We warmly welcome our regular and new customers to join us for Rubber Mount , Arm Bush , Stainless Steel Square U Bolts , We sincerely welcome friends from all over the world to cooperate with us on the basis of long-term mutual benefits.
Factory wholesale TRA Type Leaf Spring - High quality china manufacturer SUP9 steel leaf spring for trailer 2728 – Jiachuang Detail:

This spring assy are widely used in American for trailer .

Spring Measurements Specs

Totally 3 blades , 3pcs middle pads , End to End Measurement 1124 mm (Free Length Measurement), A side Free Arch Measurement 97mm，Tolerance range ±3mm ,B side Free Arch Measurement 89mm,Tolerance range ±3mm, Middle straight 203mm .

All datas are obtained by measuring the new produce product .

tuzhi

NO.Leaf

W&T(mm)

Length(mm)

Per Weight(kg)

Assy Weight(kg)

1

76*20

578+546

12.35

26

2

76*20

383+383

8.28

3

76*20

235+235

4.84

TRA2728 Leaf Spring Detail Photos

1
2

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:

Factory wholesale TRA Type Leaf Spring - High quality china manufacturer SUP9 steel leaf spring for trailer 2728 – Jiachuang detail pictures

Factory wholesale TRA Type Leaf Spring - High quality china manufacturer SUP9 steel leaf spring for trailer 2728 – Jiachuang detail pictures

Related Product Guide:
We are commitment to offer the competitive price ,outstanding products quality, as well as fast delivery for Factory wholesale TRA Type Leaf Spring - High quality china manufacturer SUP9 steel leaf spring for trailer 2728 – Jiachuang, The product will supply to all over the world, such as: European, Rio de Janeiro, Denver, All our staffs believe that: Quality builds today and service creates future. We know that good quality and the best service are the only way for us to achieve our customers and to achieve ourselves too. We welcome customers all over the word to contact us for future business relationships. Our products are the best. Once Selected, Perfect Forever!
    • The factory has advanced equipment, experienced staffs and good management level, so product quality had assurance, this cooperation is very relaxed and happy!
    5 Stars By Christian from San Diego - 2017.09.22 11:32
    This supplier's raw material quality is stable and reliable, has always been in accordance with the requirements of our company to provide the goods that quality meet our requirements.
    5 Stars By Marcie Green from Belarus - 2018.11.22 12:28

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