Description
Restore crisp internal adjustment and protect your heavy commercial vehicle braking system from seizing with the genuine FAG Air Disc Brake Caliper Bearing & Seal Repair Kit. Engineered specifically for heavy-duty air disc brake mechanisms (such as Knorr-Bremse and Meritor-derived platforms), this comprehensive maintenance kit combines high-precision internal support bearings with durable EPDM rubber seals and O-rings. Worn internal bearings and cracked seals cause sluggish mechanical adjustment, uneven brake pad wear, and catastrophic caliper binding. This professional-grade FAG repair kit solves those failures directly. It utilizes high-purity bearing steel, precision roller geometry, and advanced multi-lip elastomers to deliver frictionless internal actuation, maintain airtight pneumatic integrity, and maximize the operational lifespan of your commercial transport fleet.
Technical Parameters
| Category | Specifications & Technical Details |
| High-Precision Caliper Internal Support Bearings | We equip the kit with quench-hardened high-purity bearing steel needle or thrust bearings. As a result, they maintain smooth rotation under extremely high braking clamping force. Moreover, they eliminate internal mechanical binding. |
| Multi-Lip High-Temperature Seals & Dust Boots | We manufacture these seals from premium EPDM and fluoroelastomer composite material. Consequently, they block moisture and de-icing salt intrusion under extreme temperatures from -40°C to +150°C. |
| Micron-Level Dimensional Tolerance & OE Fit | We build all bearing outer diameters and seal ring grooves strictly to OEM technical specifications. Therefore, they achieve absolute airtightness and concentricity when press-fitted into the caliper housing. |
| Long-Lasting Extreme Pressure & Fretting Resistance | The internal bearings and seal components deliver outstanding fretting wear resistance. Additionally, they withstand mechanical fatigue caused by high-frequency micro-vibration and frequent stop-and-go cycling. |
| Industrial Moisture-Resistant Comprehensive Kit Packaging | We package the complete set of internal bearings, sealing gaskets, snap rings, and guide kits in cleanroom-grade individual packaging. As a result, this ensures zero contamination during transport and storage. |
Applicable Car Brands & Models
Common warning symptoms include:
Uneven Brake Pad Wear: One side of the pad wears down much faster than the other due to a binding internal adjustment mechanism.
Sluggish Brake Release: The brakes fail to release instantly after you lift your foot off the pedal, causing overheating and smoke.
Air or Grease Leaks Around the Adjuster Housing: Visible grease seepage or air bubbles leaking from the internal adjustment shaft seals.
Replacing both components together ensures a complete restoration. Worn seals allow moisture inside, which instantly rusts and ruins internal bearings; conversely, a failing bearing creates excessive vibration that destroys new rubber seals. Replacing them as a kit prevents secondary failures.
Yes. Overhauling an air disc brake caliper internal mechanism requires clean workshop conditions, precision bearing press tools, and retaining ring pliers to avoid damaging the delicate micro-tolerances of the new FAG components.
Each complete kit is sealed in a moisture-resistant protective poly bag, coated with anti-corrosion oil, and packed inside a robust branded industrial box to guarantee safe international wholesale transit.
