T: +8615609213525
E: 15829336298@139.com
E: 15829336298@139.com
Room 1212-G107, Unit 2, Building 1, Block A, Shenglong Plaza, No. 80 Weiyang Road, Weiyang District, Xi'an City, Shaanxi Province
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Trailer Parts
| Attribute | Description |
|---|---|
| Product Name | Brake Shoe Spring / Drum Brake Spring Kit |
| Common Types | Return Spring (Pair), Hold-Down Spring, Combination Kits |
| Function | Retracts brake shoes after braking; holds shoes in place on backing plate |
| Application | Trailer, truck, bus, and commercial vehicle S-cam drum brakes |
| Material | High-carbon steel, Chrome-Silicon alloy (60Si2MnA, 55CrSi) |
| Surface Treatment | Phosphating, zinc plating, or oil coating for corrosion resistance |
| Operating Temperature | -40°C to +200°C (short-term peaks up to 300°C) |
| Fatigue Resistance | High – engineered for millions of cycles |
| Standard Compliance | SAE J838, FMVSS 105, ECE R90, ISO 9001, GB/T 1392 |
| Reusability | No – recommended for replacement during brake service |
| Packaging | Complete set per axle side (e.g., 2x return + 2x hold-down springs) |
| Customization Available | Yes – by brake model, load rating, or original equipment specifications |
| Parameter | Specification |
|---|---|
| Model Number | BSS-M28-70 |
| Compatible Brake Type | Meritor 28 Series, 70" S-Cam, 28mm x 170mm shoes |
| Spring Type | Tension (return) and compression (hold-down) springs |
| Return Spring Force | 220–260 N (at working length) |
| Hold-Down Spring Preload | 80–100 N |
| Wire Diameter | 3.5 mm – 5.0 mm (varies by spring type) |
| Spring Length (Free) | Return: 280 mm; Hold-down: 45 mm |
| Coiling Method | Cold-wound, precision helical coiling |
| Load Cycle Life | ≥ 1,000,000 cycles |
| Corrosion Resistance | Zinc-plated (≥ 8 µm thickness), salt spray test > 72h |
| Weight (per kit) | ~0.6 kg |
| Approvals | Meets SAE J838 Class I, E-marked (E9), DOT compliant |
| Attribute | Description |
|---|---|
| Product Name | Brake Shoe Spring / Drum Brake Spring Kit |
| Common Types | Return Spring (Pair), Hold-Down Spring, Combination Kits |
| Function | Retracts brake shoes after braking; holds shoes in place on backing plate |
| Application | Trailer, truck, bus, and commercial vehicle S-cam drum brakes |
| Material | High-carbon steel, Chrome-Silicon alloy (60Si2MnA, 55CrSi) |
| Surface Treatment | Phosphating, zinc plating, or oil coating for corrosion resistance |
| Operating Temperature | -40°C to +200°C (short-term peaks up to 300°C) |
| Fatigue Resistance | High – engineered for millions of cycles |
| Standard Compliance | SAE J838, FMVSS 105, ECE R90, ISO 9001, GB/T 1392 |
| Reusability | No – recommended for replacement during brake service |
| Packaging | Complete set per axle side (e.g., 2x return + 2x hold-down springs) |
| Customization Available | Yes – by brake model, load rating, or original equipment specifications |
| Parameter | Specification |
|---|---|
| Model Number | BSS-M28-70 |
| Compatible Brake Type | Meritor 28 Series, 70" S-Cam, 28mm x 170mm shoes |
| Spring Type | Tension (return) and compression (hold-down) springs |
| Return Spring Force | 220–260 N (at working length) |
| Hold-Down Spring Preload | 80–100 N |
| Wire Diameter | 3.5 mm – 5.0 mm (varies by spring type) |
| Spring Length (Free) | Return: 280 mm; Hold-down: 45 mm |
| Coiling Method | Cold-wound, precision helical coiling |
| Load Cycle Life | ≥ 1,000,000 cycles |
| Corrosion Resistance | Zinc-plated (≥ 8 µm thickness), salt spray test > 72h |
| Weight (per kit) | ~0.6 kg |
| Approvals | Meets SAE J838 Class I, E-marked (E9), DOT compliant |
