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| Suspension Leaf Spring for Truck Main Dimension | |
| 1.Production Name : | OEM different types of leaf springs for trailer |
| 2.Types | small Leaf Spring |
| 3.Width | 20mm---150mm |
| 4.Thickness | 20mm---60mm |
| 5.Pieces | 5 |
| Suspension Leaf Spring for Truck Specification | |
| 1.Components: | Leaf,clip,center bolt bushing,tip insert,nuts |
| 2.Color | Red,shinning black,dark black,grey |
| 3.Materials: | SUP9,SUP11,52CrMoV4,50CrVA or as your required |
| 4.Quality level: | Excellent quality for international market, made in China, YUANCHENG brand |
| 5.Certificate: | ISO9001; TS16949; FORM E. |
| 6.Truck,trailer,bus suitable: | MAN,TOYOTA,BPW,RANDON,UAZ ,BENZ,DAF,HOWO,CIMC |
| Our products are popular in the worldwide, China(25%),North American(10%), South American(10%), Mid-East(15%), Europe(15%) | |
1. By fully automatic CNC cutting & punching production line Center hole positioning tolerance: <±0.2 mm Cutting length tolerance: <±2 mm
2. Use automatic CNC leaf eye rolling machines, robot assistance, dedicated molds and toolings to guarantee below features: 1) Perpendicularity tolerance <1% x leaf width 2) Parallelism tolerance< 1% x leaf width 3) Eye diameter tolerance<±0.5 mm 4) Width tolerance of leaf end: -0.5mm ~ 0 mm
3. Use automatic CNC parabolic taper rolling machines, robot assistance, dedicated molds and toolings to guarantee below features: 1) Taper thickness allowance: <±0.25mm 2) Width tolerance of leaf end: -0.5mm~0 mm 1)
4. Heating line: The large-scale automatic CNC temperature control heating furnace not only ensures the heating time but also ensures that the temperature in the furnace reaches the design value (the temperature difference is within ±5 degrees), ensures that the leaf springs are heated evenly, and avoids excessively high or low temperatures, thereby ensuring the strength of the leaf springs and the service life limit meets the Crequirements.
5. Quenching & camber making line: Use special CNC quenching equipment, mechanical oil, camber making machines and robot assistance to ensure that the quenching temperature, quenching time and cambers reach the design requirements.
6. Tempering line: A dedicated CNC tempering production lines are used to ensure that the tempering temperature and the tempering time meet the design requirements. So as to ensure the strength and service life of leaf springs. 
Implementing IATF 16949-2016
Implementing ISO 9001-2015
Quality standards: GB/T 19844-2018, GT/T 1222-2007
Flat bar suppliers from top 3 steel mills in China
Leaf length tolerance (mm): ±2 (Exceed spring industry standard ±3)
Camber tolearance (mm): ≤±6 (Exceed spring industry standard ±7)
Fatigue life ( cycles): >120,000+ (Exceed spring industry standard 100,000 cycles)
Annual output (tons): 35,000+
Q1: What material of the leaf spring can you supply?
A: We can supply different materials of leaf spring, including 60Si2Mn, SUP9, 51CrV4, or any material as you require. Before placing the order, please make sure the material to us or we can advise the material to you according to your specification.
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