24T Heavy duty truck suspension part leaf spring

Short Description:

Part NO. 24T JC NO. JCBHZA0369
Spec. 90*13/17(mm) Model BPW
Material SUP9/55Cr3 MOQ 50 SETS
Port Shanghai/Xiamen/Ningbo Payment T/T,L/C,D/P
Lead Time 20-30 days Warranty 12 months

Product Detail

Product Tags

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.



01.No Rust problem + Perfect looking


>> 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


>> 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


>> 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

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


1.Material Cutting


4.Edge Cutting


7.Stress Peening








3.Eye Rolling






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 )

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