Good Quality Tandem Axle Leaf Springs - TRA-2732 trailer part leaf spring parabolic leaf spring – Jiachuang

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Innovation, excellent and reliability are the core values of our company. These principles today much more than ever form the basis of our success as an internationally active mid-size business for U Bolts For Trucks , Galvanized U Bolts , Leaf Spring U Bolts , We Sincerely welcome customers from all over the world to visit us, with our multifaceted cooperation and work together to develop new markets, create win-win brilliant future.
Good Quality Tandem Axle Leaf Springs - TRA-2732 trailer part leaf spring parabolic leaf spring – Jiachuang Detail:

This spring assy are widely used in American for trailer .

Spring Measurements Specs

Totally 8 blades , 1-7 blade Width(mm)*Thickness(mm):75*13, the 8th blade :75*11  , End to End Measurement 1096 mm (Free Length Measurement), Tolerance range ±3mm ,A side Free Arch Measurement 73mm,Tolerance range +6mm ,B side Free Arch Measurement 73mm,Tolerance range +6mm, Middle straight 203mm .

All datas are obtained by measuring the new produce product .

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Semi Trailer Steel TRA2732 Leaf Spring Characteristics

1. The TRA2732 LEAF SPRING acts as a linkage for holding the axle in position and thus separate linkages are not necessary. It makes the construction of the suspension simple and strong.

2. Because the positioning of the axle is carried out by the leaf springs, it is disadvantageous to use soft springs i.e. springs with low spring constant.

3. Therefore, this type of suspension does not provide good riding comfort. The inter-leaf friction between the leaf springs affects the riding comfort.

4. Acceleration and braking torque cause wind-up and vibration. Also wind-up causes rear-end squat and nose-diving.

5. The inter-leaf friction damps the spring’s motion and reduces rebound, which until shock absorbers were widely adopted was a great advantage over helical springs.

Leaf Spring Catalogue For American Market

1

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:

Good Quality Tandem Axle Leaf Springs - TRA-2732 trailer part leaf spring parabolic leaf spring – Jiachuang detail pictures

Good Quality Tandem Axle Leaf Springs - TRA-2732 trailer part leaf spring parabolic leaf spring – Jiachuang detail pictures


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We also offer you product sourcing and flight consolidation expert services. We've our personal manufacturing unit and sourcing business. We can offer you virtually every variety of merchandise associated to our item range for Good Quality Tandem Axle Leaf Springs - TRA-2732 trailer part leaf spring parabolic leaf spring – Jiachuang, The product will supply to all over the world, such as: Sudan, European, Cambodia, We adhere to the honest, efficient, practical win-win running mission and people-oriented business philosophy. Excellent quality, reasonable price and customer satisfaction are always pursued! If you are interested in our items, just try to contact us for more details!
  • A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
    5 Stars By Laura from Peru - 2017.03.07 13:42
    In China, we have many partners, this company is the most satisfying to us, reliable quality and good credit, it is worth appreciation.
    5 Stars By Quyen Staten from Albania - 2018.02.21 12:14