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Developed for Class 8 heavy-haul tractors, multi-axle lowboys, off-road logging chassis, and bulk aggregate trailers across North America, these Brake Linings FMSI 4711 deliver an extra-wide foundation friction reline solution. Specifically molded to fit wide-track 16.5" x 8-5/8" (8.625") commercial brake shoe cores, this non-asbestos friction block set provides high deceleration torque, superior resistance to extreme thermal fade, and even drum wear across demanding heavy-haul transport routes.
Maintaining predictable air-brake response, structural torque capacity, and full FMVSS-121 compliance under extreme gross vehicle weight ratings demands heavy-duty friction materials that resist high-heat breakdown. Severe payload transport, frequent mountain grade braking, and vocational duty cycles subject extra-wide foundation wheel-ends to massive thermal energy, where lower-grade compounds experience accelerated thickness erosion, friction fade, and surface glazing.Our Brake Linings FMSI 4711 deliver exact OEM-level dimensional accuracy and heavy-duty structural durability tailored for North American fleet operations.
High-Density Non-Asbestos Wide-Track Formulation
Formulated with an advanced low-metallic, non-asbestos composite, each 4711 friction block undergoes high-pressure hydraulic molding followed by controlled thermal post-curing. This resilient compound maintains an optimal, stable friction coefficient across continuous operating temperatures up to 750°F (400°C), preventing brake fade and providing dependable stopping distance during continuous severe-duty deceleration events.
Precision Hole Pattern & Drum-Friendly Wear Profile
Every lining block is manufactured with factory-drilled, chamfered rivet holes that align accurately with standard 16.5" x 8-5/8" commercial brake shoe tables. This ensures maximum mechanical shear resistance and vibration stability under severe braking torque spikes. The wide-contact friction matrix encourages smooth, uniform sweep across extra-wide commercial brake drums, significantly mitigating localized hot spots, drum grooving, and edge taper wear.
Key Features & Specifications
Target Foundation Fitment: Purpose-built for North American standard FMSI 4711 commercial brake shoe tables on wide-track 16.5" x 8-5/8" drum brake assemblies.
FMVSS-121 Certified Compound: Commercial-grade non-asbestos friction formulation provides short stopping distances, low dust output, and dependable thermal stability.
High Thermal Fade Resistance: Thermally cured to operate continuously under heavy line-haul cycles with consistent friction levels up to 750°F (400°C).
Precision Rivet Alignment: CNC-machined rivet hole positions guarantee effortless mechanical fastening and maximum shear load integrity on wide steel shoe skeletons.
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 commercial vehicle types and axle setups utilize these Brake Linings FMSI 4711?
A: These friction blocks are engineered for North American Class 8 heavy-duty commercial vehicles, including heavy-haul lowboys, dump trailers, logging rigs, and severe-duty vocational tractors running wide 16.5" x 8-5/8" foundation drum brakes.
Q2: What is the primary dimensional difference between FMSI 4711 linings and standard FMSI 4707 or 4515 linings?
A: While designed for the same 16.5-inch drum diameter, FMSI 4711 linings are built for extra-wide 8-5/8" (8.625") shoe widths to handle higher thermal and payload capacities, compared to standard 7-inch width linings.
Q3: Are the rivet holes factory pre-drilled in the lining blocks?
A: Yes. All 4711 lining segments come precision-drilled and counterbored to match industry standard rivet layouts for immediate fastening onto bare steel shoe cores.
Q4: How do these linings perform under severe heavy-haul and continuous downhill 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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