China Gold Supplier for SAF-Holland Air link spring – China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang

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  • China Gold Supplier for SAF-Holland Air link spring – China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang
  • China Gold Supplier for SAF-Holland Air link spring – China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang

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We strive for excellence, service the customers", hopes to become the best cooperation team and dominator enterprise for personnel, suppliers and customers, realizes value share and continuous promotion for Light Leaf Spring , Trailer U Bolts , Shock Rubber Bushing , We focus on to make excellent quality products to supply service for our clients to establish long-term win-win relationship.
China Gold Supplier for SAF-Holland Air link spring – China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang Detail:

This spring assy are widely used in American for trailer .

Spring Measurements Specs

Totally 4 blades , End to End Measurement 1110 mm (Free Length Measurement), Free Arch Measurement (see picture) 105mm,Tolerance range within ±3mm . Middle straight 203mm,4pcs middle pads 200*71*1*12.5(mm).

All datas are obtained by measuring the new produce product .

tuzhi

Semi-Trailer Tra699 Leaf Spring 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)

1.  Eye Forming /Wrapper Forming

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

3.  End punching /end grooving / end bending / end forging / eye grinding / end rolling

4.  Center holepunching / Drilling / nibbing

4.   Heat Treatment

1.  Heating

2.  Hardening

3.  Cambering

4.  Quenching

5.  Tempering

5.   Surfacepreparation

1.  Shot peening /stress peening

2.  Primary painting

6.   Eye bushpreparation process

1.  Eye reaming /eye boring

2.  Bush insertion

3.  Bush reaming

7.   Assemble

1.  Presetting &load testing

2.  Finish painting

3.  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:

China Gold Supplier for SAF-Holland Air link spring – China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang detail pictures

China Gold Supplier for SAF-Holland Air link spring – China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang detail pictures

Related Product Guide:
Being supported by an advanced and professional IT team, we could offer technical support on pre-sales & after-sales service for China Gold Supplier for SAF-Holland Air link spring – China Manufacturer supply TRA-699 leaf spring for trailer – Jiachuang, The product will supply to all over the world, such as: Rio de Janeiro, Pretoria, Brazil, Our company will adhere to "Quality first, , perfection forever, people-oriented , technology innovation"business philosophy. Hard work to keep making progress, innovation in the industry, make every effort to first-class enterprise. We try our best to build the scientific management model, to learn abundant professional knowledge, to develop advanced production equipment and production process , to create the first-call quality products, reasonable price , high quality of service , quick delivery , to give you create new value .
    • As an international trading company, we have numerous partners, but about your company, I just want to say, you are really good, wide range, good quality, reasonable prices, warm and thoughtful service, advanced technology and equipment and workers have professional training, feedback and product update is timely, in short, this is a very pleasant cooperation, and we look forward to the next cooperation!
    5 Stars By Emily from Australia - 2018.11.28 16:25
    Superb technology, perfect after-sales service and efficient work efficiency, we think this is our best choice.
    5 Stars By Yannick Vergoz from Nairobi - 2017.10.27 12:12

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