12.25 Trailer brake drum

Compatibility 8,000 lbs--15,000 lbs heavy-duty trailer axles

Application RV, equipment haulers, flatbed trailers, heavy-duty cargo trailers

Product Overview

This is an integrated hub & drum assembly engineered for heavy-duty trailer applications, specifically designed for 8,000–15,000 lbs trailer axles. It is a direct replacement for OEM units from Dexter, Lippert, AL-KO, and other leading North American/Australian trailer axle brands, compatible with both electric and hydraulic drum brake systems.

Parameter	Specification
Maximum Brake Drum Diameter	12.34" (313.4 mm, wear limit for 12.25" standard drums)
Lug Configuration	8-Lug (8-bolt wheel mounting pattern)
Construction	One-piece high-strength gray cast iron (SAE J431 compliant)
Surface Treatment	Electrophoretic black coating for corrosion resistance
Compatibility	Electric drum brakes / Hydraulic drum brakes
Lubrication System	Oil-bath ready (with transparent oil level inspection cap)
Heat Dissipation	External cooling fins for enhanced thermal stability
Axle Compatibility	8,000 lbs--15,000 lbs heavy-duty trailer axles
Application	RV, equipment haulers, flatbed trailers, heavy-duty cargo trailers

product-553-277

Core Product Advantages

1. Heavy-Duty Load Capacity

Engineered to withstand extreme loads and harsh operating conditions, ideal for long-haul towing, mountainous terrain, and heavy equipment transport. The one-piece cast iron structure delivers superior impact and fatigue resistance.

2. Dual Brake System Compatibility

Seamlessly integrates with both electric trailer brakes and hydraulic brake systems, offering maximum versatility for diverse trailer configurations.

3. Superior Thermal Management

External cooling fins significantly improve heat dissipation during continuous braking, effectively reducing brake fade and extending service life, even under high-load downhill conditions.

4. Universal Fit & Direct Replacement

Standard 8-lug bolt pattern and industry-standard dimensions ensure direct, drop-in replacement for most OEM hub & drum assemblies, minimizing installation time and downtime.

5. Low-Maintenance Oil-Bath Design

Equipped with a transparent oil cap for visual inspection of bearing oil level without disassembly, reducing maintenance frequency and ensuring long-term bearing reliability.

6. Rigorous Quality Assurance

Manufactured in compliance with SAE and DOT standards, with 100% dimensional inspection, dynamic balancing, and pressure testing to guarantee consistent performance and safety.

Manufacturing & Supply Capability

• Production Capacity: 10,000+ units monthly, supporting large-volume OEM/ODM orders and just-in-time delivery.

• Certifications: SAE, DOT, and ISO 9001 quality management system certified.

• Customization Services: Tailored bolt patterns (PCD), bearing sizes, surface treatments, and packaging solutions available to meet specific customer requirements.

• Packaging: Neutral export packaging or custom branded packaging, optimized for sea freight and long-distance transportation.

• After-Sales Support: Comprehensive technical support, warranty coverage, and fast spare parts supply for global customers.

About Us

Dongying Hongta Automobile Fitting Co., Ltd. Established in 2007, We are professional manufacturer of Brake System, axle,brake pads, shoes, rotors and drum for passenger car, light vehicle, trailers and heavy duty vehicle. We are OEM supplier for many Chinese car makers and preferred supplier for overseas customer. Our products exported to over more than 20 countries.

We have our own R & D center. For brake pads we have semi-metallic formula, low-metallic formula and ceramic formula. For brake rotors and drums we can supply premium drilled and slotted, high carbon rotors and coated brake discs.

We have full range of brake pads, shoes ,rotor and drums, and we can develop new part number rapidly.

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