Wabco 8930300404 Thrust Ring

Description

The Wabco 8930300404 Thrust Ring is a critical component within air brake systems, designed to manage axial loads and prevent excessive movement between rotating and stationary parts. This part is used in the fittings of air brake systems to ensure smooth and reliable braking performance. This thrust ring is manufactured to OE specification, providing a direct fit and reliable functionality. It measures 27 x 250 x 27 mm and features connections for 22.1 mm and 27 mm tube diameters with an M22 x 1.5 thread.

Key Features & Benefits

Basically, this little piece takes all the force from your air brakes when you hit the pedal and turns it into rotational movement at the brake chamber. Think of it like a pivot point – it lets the brake shoes push outwards to stop the vehicle. It’s a circular component, usually made of steel, and it slides inside the brake chamber housing. It’s designed to handle a lot of pressure, converting linear force into the circular motion needed to activate your brakes. It’s part of the whole air brake system, obviously, specifically inside the brake chamber. When you apply the brakes, compressed air pushes on this ring. This causes it to move and push on the slack adjuster, which in turn pushes the brake shoes against the drums. It's a critical link in getting your brakes to actually work.

Symptoms, Risks & Replacements

If this thing fails, you're going to have trouble stopping. It’s not something you want to mess around with. It acts like a shield, taking all that braking force. If it’s worn, cracked, or damaged, it won’t transfer that force properly. You’ll notice if it’s bad – probably a soft or spongy brake pedal, longer stopping distances, or even the brakes dragging. It’s a relatively inexpensive part to replace, but it's a big safety item. You can find them pretty easily, we often stock them here, and a good place to check online is Fixparts Online, they have a good selection of air brake components. Don't wait until something serious happens to deal with it.

Warranty Information

Wabco Thrust Ring (MPN 8930300404) comes with a 1-year warranty.