Product Introduction

The BD2-655-17 is a 10-inch standard-specification trailer brake drum, a mainstream fit for 3500-pound (1.75-ton) trailer axles. Often labeled BD-655-17, it is a standardized, highly versatile heavy-duty trailer braking component. Unlike ordinary light-duty trailer brake drums, it emphasizes high load-bearing capacity, high wear resistance, and high-precision fit. Widely used in various civilian and commercial trailers, it is a core replacement and original equipment component for trailer braking systems.

Key Features

1. High-Precision Casting, Maximizing Braking Stability

The BD2-655-17 employs precision casting and machining processes. The roundness and coaxiality tolerances of the brake working surface are strictly controlled within industry standards, resulting in minimal radial runout and excellent static balance performance. 1. After installation, the wheels rotate without wobbling, and the braking force is evenly distributed, effectively avoiding common problems such as brake pull, steering wheel vibration, and abnormal brake noise. Safety is significantly improved during high-speed towing and emergency braking.

2. High wear and heat resistance for heavy-load, high-frequency braking

The special alloy cast iron material possesses excellent thermal stability and wear resistance, capable of withstanding the high temperatures generated during braking. It is not prone to problems such as thermal fade, thermal cracking, and deformation. Even under conditions of long downhill slopes and frequent braking, it maintains a stable coefficient of friction and braking force output, avoiding safety hazards caused by brake performance degradation. At the same time, its wear resistance is superior to ordinary cast iron brake drums, effectively extending the replacement cycle of brake drums and brake pads.

3. Standardized Design, High Versatility and Replaceability

As a standardized brake drum model for 3500-pound trailers, the BD2-655-17 is compatible with the axles of most trailers on the market with the same load capacity. It is brand-independent; as long as the axle specifications, bolt spacing, and dimensions match, it can be directly replaced without cutting, welding, or other modifications. Installation is convenient, and maintenance is efficient, making it the first choice for trailer repair shops and owners' own spare parts.

4. Optimized Structure, Balancing Heat Dissipation and Rigidity

The brake drum's outer wall structure has been optimized with a reasonable wall thickness design. This ensures overall structural rigidity to withstand heavy impacts while quickly dissipating heat generated during braking, reducing the brake drum's operating temperature and minimizing the risk of brake fade. Simultaneously, the drum opening area is reinforced to prevent cracking and deformation over long-term use, improving product durability.

Parameter Category	Specific Specification & Value	Parameter Description & Industry Note
Brake Drum Main Dimensions	Diameter 10 in (254 mm), Friction Surface Width 2-1/4 in (57 mm)	Industry standard medium-duty trailer brake size, sufficient friction area, stable braking torque output, suitable for medium-load routine braking demands
Bolt Hole Specification	6-hole design, Bolt Pitch Circle Diameter 5.5 in (PCD 139.7 mm)	Commonly known as 6×5.5 bolt pattern in the industry, mainstream hub pattern for heavy-duty trailers, tight fit, even stress distribution without loosening
Rated Load Capacity	Single drum load 1750 lbs, dual drums fit 3500 lbs (approx. 1.6 tons) axle	Adequate load margin, compliant safety factor, covers full load scenarios for mainstream medium-heavy duty trailers
Bearing & Seal Compatibility	Inner Bearing L68149, Outer Bearing L44649; Seal 171255/168255, Bearing Protector 1.980 in	Exclusive matching specifications, full bearing and seal system with perfect fit, strong tightness to prevent dust and water intrusion
Material & Surface Treatment	High-grade wear-resistant alloy cast iron, black anti-rust paint coating	Excellent high temperature resistance, anti-deformation and wear resistance, adapts to complex outdoor humid and dusty working environments, rust-proof and durable

OEM & ODM Service

Product design, development, as well as supply packaging and after-sales service are provided.
We offer full OEM/ODM customization support, covering everything from product design and development to tailored packaging solutions.
We can work with you on both long-term bulk orders and small-batch trial runs, no matter your order size.
You can also request samples before placing a formal order to verify product quality ahead of mass production.

Order & Cooperation

For large-volume orders and long-term clients, we offer highly competitive prices and provide sample inspection services before order placement. We also welcome small-volume orders; our high-quality products can help you quickly capture the market, and our shipping and after-sales services are excellent.