Description
Maintain accurate brake pad clearance and ensure flawless anti-lock braking signals with the genuine FAG Commercial Vehicle Air Disc Brake Adjuster Mechanism & ABS Ring. Engineered specifically for heavy commercial transport axles, this professional-grade assembly combines an internal mechanical adjuster mechanism with a high-precision ABS tone ring. Worn adjuster mechanisms lead to excessive pedal travel, delayed braking, and uneven pad wear, while damaged ABS rings cause erratic wheel speed readings and system faults. This comprehensive FAG replacement kit solves both challenges directly. It utilizes high-strength alloy steels, precision gear-cutting technologies, and wear-resistant internal components to deliver consistent mechanical clearance adjustment, stable electromagnetic signal generation, and long-lasting durability in heavy-duty transport fleets.
Technical Parameters
| Category | Specifications & Technical Details |
| High-Precision Automatic Clearance Adjustment Mechanism | We integrate a precision-calibrated one-way clutch and gear transmission assembly inside the caliper. As a result, it automatically compensates internal clearance as brake pads wear. Moreover, it maintains consistent brake pedal travel at all times. |
| High-Permeability Precision ABS Tone Ring | We CNC-machine this tone ring from high-purity magnetic alloy steel. Consequently, it outputs clear, stable, and distortion-free high-frequency pulse signals to the wheel speed sensor. |
| High-Strength Heat-Resistant Alloy Steel Gears | We apply deep carburizing and quenching treatment to the internal transmission gears. Therefore, they withstand the powerful shear stress and +200°C instantaneous high temperature generated by high-frequency emergency braking. Notably, they never suffer tooth breakage. |
| Strict Industrial Concentricity & Dimensional Tolerance | We follow strict Schaeffler manufacturing standards. As a result, the caliper adjuster shaft and wheel-end ABS tone ring achieve perfect dynamic balance and concentricity after press-fitting. Meanwhile, this eliminates runout. |
| Industrial Anti-Corrosion Coating & Contaminant Resistance | We apply a specialty anti-rust coating to the surface. Consequently, it perfectly resists chemical attack and rust caused by road de-icing salt, mud, mineral oil, and high-pressure water jet washing. |
Applicable Car Brands & Models
Common symptoms include:
Excessive Pedal Travel: You must press the brake pedal much farther down before the vehicle begins to slow down.
Uneven Pad Wear: One brake pad wears out completely while the opposite pad remains thick, indicating the adjuster is stuck.
Dragging Brakes: The internal adjuster fails to release clearance properly, causing the pads to rub constantly against the rotor and overheat.
While the adjuster mechanism controls mechanical clearance, the ABS tone ring provides critical speed data to the electronic braking system. Because both components reside within the critical wheel-end assembly, inspecting or servicing them together prevents unexpected dashboard ABS fault codes and ensures optimal braking safety.
Yes. When installing a new internal adjuster mechanism, technicians must follow precise manual reset and initial clearance calibration procedures specified by the axle manufacturer to ensure proper self-adjustment functionality.
Each component is treated with anti-corrosion oil, sealed in a heavy-duty moisture-proof bag, and packed inside a robust industrial corrugated box with custom inserts to prevent transit damage to the delicate ABS tone ring teeth.

























