2020 China New Design Leaf Spring Manufacturer - High quality china manufacturer SUP9 steel leaf spring for trailer – Jiachuang

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Dedicated to strict high-quality management and considerate shopper company, our experienced team associates are normally available to discuss your requirements and ensure full shopper gratification for U Bolt For Truck , Front Leaf Springs , HD75 Leaf Spring , We never stop improving our technique and quality to keep up with the development trend of this industry and meet your satisfaction well. If you are interested in our products, please contact us freely.
2020 China New Design Leaf Spring Manufacturer - High quality china manufacturer SUP9 steel leaf spring for trailer – 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 1133 mm (Free Length Measurement), A side Free Arch Measurement 124mm,Tolerance range +6mm ,B side Free Arch Measurement 105mm,Tolerance range +6mm, Middle straight 203mm .

All datas are obtained by measuring the new produce product .

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Parabolic Semi-trailer TRA2727 Leaf Spring Characteristics

1. The TRA2727 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.

TRA2727 Leaf Spring Detail Photos

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:

2020 China New Design Leaf Spring Manufacturer - High quality china manufacturer SUP9 steel leaf spring for trailer – Jiachuang detail pictures

2020 China New Design Leaf Spring Manufacturer - High quality china manufacturer SUP9 steel leaf spring for trailer – Jiachuang detail pictures


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Our objective is to present premium quality products at aggressive prices, and top-notch services to buyers around the world. We have been ISO9001, CE, and GS certified and strictly adhere to their excellent specifications for 2020 China New Design Leaf Spring Manufacturer - High quality china manufacturer SUP9 steel leaf spring for trailer – Jiachuang, The product will supply to all over the world, such as: Angola, Italy, Milan, Customer satisfaction is our first goal. Our mission is to pursue the superlative quality, making continual progress. We sincerely welcome you to make progress hand in hand with us, and construct a prosperous future together.
  • The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
    5 Stars By Chloe from Bangladesh - 2017.06.29 18:55
    We are a small company that has just started, but we get the company leader's attention and gave us a lot of help. Hope we can make progress together!
    5 Stars By Kevin Ellyson from Guinea - 2018.11.11 19:52