Description
Secure your heavy commercial vehicle’s brake caliper firmly to the axle housing with the genuine Knorr-Bremse 22.5″ Commercial Vehicle Air Disc Brake Caliper Carrier. Engineered specifically for 22.5-inch heavy-duty air disc brake systems (such as SB7 and SK7 platforms), this robust structural carrier withstands immense rotational braking torques and heavy mechanical stresses without flexing. Worn mounting bolt holes, fretted guide surfaces, and cracked carrier housings eventually compromise brake pad alignment, leading to uneven pad wear and hazardous brake chatter. This premium replacement caliper carrier solves those structural issues directly. It utilizes high-grade forged alloy steel, precision CNC-machined mounting bores, and stress-resistant geometry to provide a rock-solid anchor platform, ensure precise brake pad alignment, and withstand severe commercial transport abuse.
Technical Parameters
| Category | Specifications & Technical Details |
| High-Strength Forged Alloy Steel Torsional Resistance Structure | We manufacture this bracket from heavy-duty high-strength forged steel. As a result, it withstands the enormous shear stress and rotational torque generated when large-tonnage commercial vehicles perform emergency braking at highway speeds. Moreover, this construction eliminates bracket deformation and cracking. |
| High-Precision CNC Axle Housing Mounting Bores | We CNC machine all bolt holes and axle head locating surfaces with high precision. Consequently, the caliper assembly stays absolutely parallel to the axle centerline. Meanwhile, this eliminates uneven wear and abnormal noise caused by installation misalignment. |
| Anti-Fretting Wear Hardened Sliding Track Surface | We apply specialty surface quenching and heat treatment strengthening to the caliper sliding guide interface. As a result, it resists fretting corrosion under long-term high-frequency vibration and axial brake pad thrust. |
| Heavy-Duty Braking Reaction Force Anchor | This bracket serves as the core mechanical transmission bridge between the brake pads and the axle. Specifically, it smoothly and directly conducts the clamping reaction force from the brake caliper into the entire vehicle chassis suspension system. |
| Industrial Corrosion-Resistant Coating & Salt-Spray Defense | We apply a heavy-duty anti-corrosion primer and anti-oxidation protective layer to the surface. Therefore, the bracket maintains structural integrity and long service life under -40°C severe cold, road de-icing salt erosion, and high-humidity environments. |
Applicable Car Brands & Models
Common warning symptoms include:
Persistent Brake Clatter or Metal Knocking Noises: A sharp metallic clunking sound when applying or releasing the brakes, caused by excessive clearance in worn carrier guide slots.
Severe Uneven Brake Pad Wear (Taper Wear): One side of the brake pad wears down significantly faster than the other due to a misaligned or distorted carrier bracket.
Visible Cracks or Structural Deformation: Cracks appearing near the mounting bolt holes or sliding tracks during routine wheel-end inspections.
Dragging Brakes Caused by Binding: The caliper fails to slide smoothly along the carrier tracks, resulting in continuous friction and overheated hubs.
Complete replacement is strongly recommended if the carrier housing is cracked, heavily corroded, or if the sliding guide tracks and mounting bolt bores are structurally enlarged. Repairing structural steel brackets through welding is unsafe and violates commercial transport safety standards.
Yes, absolutely. Because the caliper carrier absorbs the entire braking force of a heavy commercial vehicle, technicians must clean the axle housing mounting faces thoroughly, apply the manufacturer-specified high-strength threadlocker, and tighten all mounting bolts to exact factory torque specifications using calibrated tools.
Each heavy-duty steel carrier is coated with a VCI anti-rust inhibitor, wrapped securely in heavy industrial barrier film, and packed inside a reinforced heavy corrugated box or custom wooden crate to prevent transit damage to precision-machined surfaces and mounting bores.
