Manufacturing Companies for Mack Leaf Spring - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang

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Our team through qualified training. Skilled professional knowledge, powerful sense of support, to satisfy the support desires of consumers for Tra Leaf Spring , Large Square U Bolts , Stainless Steel Trailer U Bolts , All products are manufactured with advanced equipment and strict QC procedures in order to ensure high quality. Welcome customers new and old to contact us for business cooperation.
Manufacturing Companies for Mack Leaf Spring - 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:

Manufacturing Companies for Mack Leaf Spring - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang detail pictures

Manufacturing Companies for Mack Leaf Spring - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang detail pictures


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Our organization sticks to your principle of "Quality may be the life of your organization, and reputation will be the soul of it" for Manufacturing Companies for Mack Leaf Spring - High quality cheap price TRA-2260 leaf spring for trailer – Jiachuang, The product will supply to all over the world, such as: Surabaya, Saudi Arabia, Germany, With a fully integrated operation system, our company has won a good fame for our high quality goods, reasonable prices and good services. Meanwhile, we have established a strict quality management system conducted in material incoming, processing and delivery. Abiding by the principle of "Credit first and customer supremacy", we sincerely welcome clients from home and abroad to cooperate with us and advance together to create a brilliant future.
  • We have been appreciated the Chinese manufacturing, this time also did not let us disappoint,good job!
    5 Stars By Donna from Peru - 2017.09.30 16:36
    The company account manager has a wealth of industry knowledge and experience, he could provide appropriate program according our needs and speak English fluently.
    5 Stars By Janet from Irish - 2017.09.09 10:18