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24T 28T 32T Bogie Leaf Springs for Heavy Duty Semi Trailers Trucks

Short Description:

Part No. 32T Paint Electrophoretic paint
Spec. 120*14/18/20 Model Bogie semi trailer
Material SUP9 MOQ 100 SETS
Free Arch 110mm±3 Development Length 1820
Weight 381.5 KGS Total PCS 17 PCS
Delivery Time 15-30 days Warranty 12 months

Product Detail

Product Tags



The Bogie leaf spring is suitable for special and heavy weight semi-trailer, it install with BPW, FUWA, HJ, L1 Axle

● The capacity: 24,000 to 32,000 kgs
● The item total has 17 pcs, the raw material size is 120*14 for first and second leafs, the third and the fourth is 120*20, others are 120*18
● Raw material is SUP9
● The free arch is 110±3mm, the development length is 1820, the centre hole is 20.5
● The painting use electrophoretic painting
● We also can produce base on client's drawings to design

Bogie series leaf springs:

Item No. Development Lenght Free Arch No.of Leaves Thickness of Leaves Width of Leaves
(mm) (mm) (mm) (mm) (mm)
24T 1662 79 18 13/16/18 90
28T 1820 110 19 14/16 120
32T 1820 110 17 14/18/20 120



Bogie suspension is to reduce the common leaf spring suspension's front and rear brackets into a single bracket connected to the chassis body. Its stress points are shared on the front and rear axles. Compared with ordinary leaf spring suspensions, bogie suspensions can carry more capacity. This kind of Bogie suspension is less used in ordinary semi-trailers, and is mainly used in heavy semi trailer and truck.

The bogie leaf spring is use for bogie suspension, there are three types of leaf spring design:

1. 12T leaf spring (section:90×13, 90×16, 90×18, 18 leaves) for 24T bogie;
2. 14T leaf spring (section: 120×14, 120×16, 19 leaves) for 28T bogie;
3. 16T leaf spring (section: 120×14, 120×18, 120×20, 17 leaves) for 32T bogie.

A leaf spring is the most widely used elastic element in automobile suspensions. It is an approximate equal strength steel beam composed of several alloy spring sheets of equal width and unequal length. Its main function is to transmit all forces and moments between wheels and frames, relax impactive load caused by the road surface and realize vehicle guidance, make vehicles normal drive. Leaf springs are widely applied to suspensions for heavy duty trucks, light duty trucks, pick-ups, cars, skeletal trailers, lowbed trailers, flatbed trailers, oil tank trailers, van trailers, wood transport trailers, gooseneck trailers, agricultrucal vehicles, etc. Classification of Leaf Springs include Conventional leaf springs, parabolic leaf springs, Z type air linkers, TRA leaf springs, trailer leaf springs, light duyt trailer spring, boat trailer springs, pickup leaf springs, semi trailer springs, truck springs, farming/agricultural trailer springs, sprung drawbar, bus springs, bogie/boogie springs, heavy truck springs, etc.



Provide different types of leaf springs which include conventional multi leaf springs, parabolic leaf springs, air linkers and sprung drawbars.
In terms of vehicle types, it include heavy duty semi trailer leaf springs, truck leaf springs, light duty trailer leaf springs, buses and agricultural leaf springs.

Packing & Shipping


QC equipments


Our advantage

1) Raw Material

Thickness less than 20mm. We use material SUP9

Thickness from 20-30mm. We use material 50CRVA

Thickness more than 30mm. We use material 51CRV4

Thickness more than 50mm. We choose 52CrMoV4 as the raw material

2) Quenching Process

We strictly controlled the steel temperature around 800 degree.

we swing the spring in the quenching oil among 10 seconds according to the spring thickness.

3) Shot Peening

Each assembling spring set under stress peening.

Fatigue test can reach over 150000 cycles.

4) Electrophoretic Paint

Each item use electrophoretic paint

Salt spray testing reach 500 hours

Technical aspect

1、Product technical standards:implementation of IATF16949
2、More than 10 spring engineers' support
3、Raw material from the top 3 steel mills
4、Finished products tested by Stiffness Testing Machine, Arc Height Sorting Machine; and Fatigue Testing Machine
5、Processes inspected by Metallographic Microscope, Spectrophotometer, Carbon Furnace, Carbon and Sulfur Combined Analyzer; and Hardness Tester
6、Application of automatic CNC equipment such as Heat Treatment Furnace and Quenching Lines, Tapering Machines, Blanking Cutting Machine; and Robot-assitant production
7、Optimize product mix and reduce customer purchasing cost
8、Provide design support,to design leaf spring according to customer cost

Service aspect

1、Excellent team with rich experience.
2、Think from the perspective of customers, deal with the needs of both sides systematically and professionally, and communicate in a way that customers can understand.
3、7x24 working hours ensure our service systematical, professional, timely and efficient.

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