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Crafted for Class 7–8 interstate tractors, regional distribution dry vans, bulk liquid tankers, and severe-duty vocational trailers across North America, these 4726 Brake Linings deliver a premium wheel-end friction overhaul solution. Purpose-built to match 4726 profile foundation brake shoes on 16.5" x 7" commercial drum brake setups, this friction block set provides smooth deceleration response, high thermal stability, and uniform surface contact throughout long-distance highway hauling.
Delivering consistent braking deceleration and meeting stringent FMVSS-121 standards under heavy gross axle weight ratings requires commercial friction materials capable of handling continuous heat buildup. Severe stop-and-start delivery schedules and steep gradient descents create intense wheel-end friction, where substandard blocks suffer rapid friction fade, surface crystallization, and uneven lining taper.Our 4726 Brake Linings provide exact OE-level dimensional accuracy and heavy-duty structural durability tailored for North American fleet operations.
High-Density Non-Asbestos Friction Formulation
Formulated with an advanced low-metallic, non-asbestos matrix, each 4726 friction block undergoes high-pressure hydraulic molding and controlled thermal curing. This engineering ensures a stable friction coefficient across extreme operating temperatures up to 750°F (400°C), preventing high-heat fade and ensuring predictable stopping performance under maximum payload conditions.
Precision Hole Pattern & Drum-Friendly Wear Profile
Each lining block features factory-drilled, chamfered rivet holes aligned with standard 4726 brake shoe steel skeletons, ensuring maximum shear resistance and vibration stability under sudden torque spikes. The optimized friction matrix promotes uniform contact across standard 16.5-inch commercial brake drums, significantly reducing localized hot-spotting, drum scoring, and premature edge taper.
Key Features & Specifications
Target Foundation Fitment: Purpose-engineered specifically for North American standard 4726 commercial brake shoe skeletons on 16.5" x 7" drum brake assemblies.
FMVSS-121 Rated Compound: High-performance non-asbestos friction formulation provides short stopping distances, low dust generation, and dependable thermal stability.
High Thermal Fade Resistance: Cured to operate under heavy line-haul cycles with consistent friction coefficient up to 750°F (400°C).
Precision Rivet Alignment: CNC-machined rivet hole locations ensure effortless mechanical fastening and maximum shear load integrity on 4726 shoe cores.
Extended Drum & Lining Life: Smooth, balanced friction matrix minimizes drum micro-grooving, heat cracking, and uneven shoe taper wear.
Frequently Asked Questions (FAQ)
Q1: Which brake shoe models and axle setups are compatible with these 4726 Brake Linings?
A: These friction blocks are engineered specifically for North American commercial drum brake setups utilizing 4726 profile foundation brake shoes on standard 16.5" x 7" drive, steer, and trailer axles.
Q2: What friction formulation is used in these 4726 Brake Linings?
A: They utilize a heavy-duty, low-metallic non-asbestos organic (NAO/semi-metallic) formulation engineered for 20,000 to 23,000 lbs GAWR commercial fleet operations.
Q3: Are rivet holes pre-drilled in the lining blocks?
A: Yes. All 4726 lining segments come precision-drilled and counterbored to match OEM rivet hole patterns for immediate fastening onto standard 4726 steel shoe cores.
Q4: How do these linings perform under sustained mountain descents and high-heat braking?
A: The friction material undergoes a specialized thermal post-curing process to prevent glazing and brake fade, ensuring rapid heat dissipation and reliable torque recovery under heavy braking cycles.
Q5: Can you provide customized packaging, edge-code stamping, and palletized bulk shipping?
A: Yes. As a direct manufacturing source, we provide custom part-number edge printing, private-brand packaging boxes, and export-grade pallet packaging for North American parts distributors and fleet suppliers.
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