YD36-009A/009B Coupler: 7k/12k LBS, SAE Ⅲ, Black Coat+Chain for RV/Engineering/Cargo
Product Details
| Model No.: | YD36-009A | Product Type: | Medium-heavy Duty Trailer Coupler |
|---|---|---|---|
| Compatible Ball Diameter: | 2" (50.8mm) | Maximum Capacity: | 7,000 LBS (3,175.1kg) |
| Finish: | Black Epoxy Resin Paint + Zinc Plating | Material & Structure: | Body: High-strength Alloy Steel (≥450MPa) Standard Steel Anti-theft Chain (800N) Fluororubber Anti-slip Gasket |
| Highlight |
RV coupler with black coat,SAE Ⅲ coupler for cargo,7k lbs coupler with chain |
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Product Description
High-performance coupler designed for RV, engineering, and cargo applications with 7k/12k LBS capacity, SAE Class III compliance, and durable black coating with anti-theft chain.
| Parameter Category | YD36-009A | YD36-009B |
|---|---|---|
| Model No. | YD36-009A | YD36-009B |
| Product Type | Medium-heavy duty trailer coupler | Heavy-duty trailer dedicated coupler |
| Compatible Ball Diameter | 2" (50.8mm) | 2-5/16" (58.7mm) |
| Maximum Capacity | 7,000 LBS (3,175.1kg) | 12,000 LBS (5,443.1kg) |
| Finish | Black epoxy resin paint + zinc plating | Black coating with wear-resistant ceramic particles |
| Material & Structure |
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- Heavy-load structure: Forged alloy steel construction for maximum durability
- Precision fit: Ball engagement gap ≤0.2mm for smooth towing
- Weather resistance: Black coating with zinc plating base resists salt spray and UV
- Safety features: Anti-theft chain and anti-slip gasket for secure operation
- Standard compliance: SAE Class III certified for global compatibility
The YD36-009A features integral forging of alloy steel with 7,000 LBS capacity, while the YD36-009B upgrades to ultra-high strength alloy steel with 12,000 LBS capacity. Both models provide precise ball compatibility with engagement gaps ≤0.2mm for vibration-free operation.
Three-layer surface protection (zinc plating + epoxy resin + clear coat) provides excellent weather resistance. The YD36-009A resists salt spray for 72 hours, while the YD36-009B extends this to 96 hours with added ceramic particles.
No fixed channel design allows for flexible adaptation to non-standard trailers. Both models are SAE Class III certified, with YD36-009B additionally passing heavy-duty trailer special tests.
Ideal for RVs up to 3 tons with 2" balls, providing stable towing, salt spray resistance, and quiet operation (≤40 decibels). Custom brackets adapt to channel-free structures without vehicle modification.
Designed for trailers up to 5 tons with 2-5/16" balls, featuring overload warning, enhanced salt spray resistance, and reduced maintenance costs for harsh environments.
Typically caused by improper engagement gaps or tight anti-theft chains. Adjust the gap to 0.1-0.2mm, check chain tension, and clean engagement surfaces.
Consider trailer weight (≤7,000 LBS for 009A, ≤12,000 LBS for 009B), ball diameter (2" or 2-5/16"), and usage scenario (harsh environments favor 009B).
YD36-009A requires Grade 10.9 bolts (60-65N*m), while YD36-009B needs Grade 12.9 bolts (80-85N*m). Always use a digital torque wrench for precise tightening.
Product Highlights
YD36-009A/009B Medium-Heavy Duty Trailer Coupler High-performance coupler designed for RV, engineering, and cargo applications with 7k/12k LBS capacity, SAE Class III compliance, and durable black coating with anti-theft chain. Product Specifications Core Parameter Summary Parameter Category YD36...
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