OEM Manufacturer UD leaf spring - 24T Heavy duty truck suspension part leaf spring – Jiachuang

This spring assy are widely used in Middle East for heavy duty truck .

Spring Measurements Specs

Totally 18 blades , 1-2 blade Width(mm)*Thickness(mm): 90*13, 3-18 blade Width(mm)*Thickness(mm): 90*17, end to end Measurement 1740 mm (Free Length Measurement),Tolerance range within ±3mm .

Free Arch Measurement (see picture) 100mm,Tolerance range within ±3mm .

All datas are obtained by measuring the new produce product .

Bogie Suspension System

In order to improve the vertical vibration ride comfort of high speed trains in operation for Shinkansen, the measures to reduce the resilient vibration of car-bodies are applied, and the design method of the bogie suspension system is given out.

Advantage

01.No Rust problem + Perfect looking

Method:

>> Single leaf by electrophoretic painting(Optional)

>> Sembling spring by electrostatic painting(Optional)

Benefits for customers

>> Salt spray testing > 500 hours beat general industrial level 200 hours,avoid rust possiblity

>> Perfect-looking — uniform painting, complete painting, no scratch

02. Pre shot-peening

Method:

>> Make shot peening under rated capacity

Benefits for customers

>> 180,000 times fatigue life beat general level 150,000 times;

>> bear heavier capacity and use longer time;

03. Pre-pressing and adjust

Method:

>> Make pre-pressing under rated capacity

>> Select camber by computer

Benefits for customers

>> Guarantee reasonable camber and keep smallest tolerance,

>> select out leaf spring whose camber is not qualified

Key Points Keep The High Quality

Production Process

1.Material Cutting

4.Edge Cutting

7.Stress Peening

2.Punching

5.Quenching

8.Assembling

3.Eye Rolling

6.Tempering

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 )