Best quality Auto Part Springs - Hot selling 11436 trailer suspension part leaf spring – Jiachuang

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"Based on domestic market and expand overseas business" is our development strategy for Customized Bushing , U Bolt Nuts , Stainless Steel Trailer U Bolts , President of our company, with whole staff, welcomes all buyers to visit our company and inspect. Let us cooperate hand in hand to make a good future.

Best quality Auto Part Springs - Hot selling 11436 trailer suspension part leaf spring – Jiachuang Detail:

This spring assy are widely used in Thailand for trailer suspension parts .

Spring Measurements Specs

Totally 9 blades ,1-9 blade Width(mm)*Thickness(mm): 76*14, End to End Measurement 1210 mm (Free Length Measurement),Tolerance range within ±3mm . Free Arch Measurement (see picture) 110mm,Tolerance range within ±5 mm . hook on left of the 3^rd blade .

All datas are obtained by measuring the new produce product .

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Trailer Leaf Spring Process

Multi-leaf springs are made as follows:

1.Shearing of flat bar

2.Center hole punching / Drilling

3.End Heating process

(1).Eye Forming / Wrapper Forming forming (hot & cold process)

(2).Diamond cutting / end trimming / width cutting / end tapering

(3).End punching / end grooving / end bending / end forging / eye grinding

(4).Center hole punching / Drilling / nibbing

4.Heat Treatment

(1).Heating

(2).Camber forming

(3).Quenching

(4).Tempering

5.Surface preparation

(1).Shot peening / stress peening

(2).Painting

6.Eye bush preparation process

(1).Eye reaming / eye boring

(2).Bush insertion

(3).Bush reaming

7.Assemble

(1).Presetting & load testing

(2).Paint touch-up

(3).Marking & packing

Finished Products and Pack 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:

Related Product Guide:

During the past few years, our business absorbed and digested state-of-the-art technologies the two at home and abroad. Meanwhile, our firm staffs a group of experts devoted to your development of Best quality Auto Part Springs - Hot selling 11436 trailer suspension part leaf spring – Jiachuang, The product will supply to all over the world, such as: European, Estonia, Iceland, Our company follows laws and international practice. We promise to be responsible for friends, customers and all partners. We would like to establish a long-term relationship and friendship with every customer from all over the world on the basis of mutual benefits. We warmly welcome all old and new customers to visit our company to negotiate business.

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This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.

By Fay from Niger - 2017.06.19 13:51

After the signing of the contract, we received satisfactory goods in a short term, this is a commendable manufacturer.

By Susan from Kuala Lumpur - 2017.01.11 17:15