TRA-2732 trailer part leaf spring parabolic leaf spring

TRA-2732 trailer part leaf spring parabolic leaf spring Featured Image
  • TRA-2732 trailer part leaf spring parabolic leaf spring
  • TRA-2732 trailer part leaf spring parabolic leaf spring

Short Description:

Part NO. TRA-2732 JC NO. JCBHZA0227
Spec. 75*11/13(mm) Model Hutchens Trailer
Material SUP9/55Cr3/SAE5160H 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 American for trailer .

Spring Measurements Specs

Totally 8 blades , 1-7 blade Width(mm)*Thickness(mm):75*13, the 8th blade :75*11  , End to End Measurement 1096 mm (Free Length Measurement), Tolerance range ±3mm ,A side Free Arch Measurement 73mm，Tolerance range +6mm ,B side Free Arch Measurement 73mm,Tolerance range +6mm, Middle straight 203mm .

All datas are obtained by measuring the new produce product .

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Semi Trailer Steel TRA2732 Leaf Spring Characteristics

1. The TRA2732 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.

Leaf Spring Catalogue For American Market

1

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 )

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