China Factory for ISUZU NPR/700P Leaf Spring - Hot Sale TRA-021 trailer suspension part leaf spring – Jiachuang

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  • China Factory for ISUZU NPR/700P Leaf Spring - Hot Sale TRA-021 trailer suspension part leaf spring – Jiachuang
  • China Factory for ISUZU NPR/700P Leaf Spring - Hot Sale TRA-021 trailer suspension part leaf spring – Jiachuang

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We are experienced manufacturer. Wining the majority of the crucial certifications of its market for Long Square U Bolts , Front Leaf Spring Suspension , Single Leaf Spring Suspension , We have professional products knowledge and rich experience on manufacturing. We always believe your success is our business!
China Factory for ISUZU NPR/700P Leaf Spring - Hot Sale TRA-021 trailer suspension part leaf spring – Jiachuang Detail:

This spring assy are widely used in American for trailer .

Spring Measurements Specs

Totally 1 blade ,end to end Measurement 1125 mm (Free Length Measurement),Tolerance range within ±4mm . The Left side Free Arch Measurement (see picture) 124mm,Tolerance range within ±5mm , The right side Free Arch Measurement (see picture) 116mm,Tolerance range within ±5mm.Middle straight 203mm.

All datas are obtained by measuring the new produce product .

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TRA021 Leaf Spring Characteristics

1. The TRA021 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.

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:

China Factory for ISUZU NPR/700P Leaf Spring - Hot Sale TRA-021 trailer suspension part leaf spring – Jiachuang detail pictures

China Factory for ISUZU NPR/700P Leaf Spring - Hot Sale TRA-021 trailer suspension part leaf spring – Jiachuang detail pictures

Related Product Guide:
"Based on domestic market and expand overseas business" is our development strategy for China Factory for ISUZU NPR/700P Leaf Spring - Hot Sale TRA-021 trailer suspension part leaf spring – Jiachuang, The product will supply to all over the world, such as: Brazil, Lebanon, Philadelphia, We are always creating new technology to streamline the production, and provide goods with competitive prices and high quality! Customer satisfaction is our priority! You can let us know your idea to develop unique design for your own model to prevent too much similar parts in the market! We will offer our best service to satisfy all your needs! Please contact us right away!
    • The manufacturer gave us a big discount under the premise of ensuring the quality of products, thank you very much, we will select this company again.
    5 Stars By Andrea from Washington - 2017.09.30 16:36
    Although we are a small company, we are also respected. Reliable quality, sincere service and good credit, we are honored to be able to work with you!
    5 Stars By Dale from Mexico - 2017.05.02 11:33

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