Description
Overview:
This Knott Style Brake Drum 200x50 with 4-stud 5.5 in PCD is a Non-Genuine compatible part for trailers using Knott 200x50 brake systems. It forms the rotating braking surface for 200 mm diameter x 50 mm shoes (approx. 7.87 in x 1.97 in) and also serves as the wheel hub. Supplied with the 42490 (MP1875B) bearing pre-fitted, it is ready to install on suitable stub axles and brake backplates. The 4-stud arrangement with M12 x 1.5 threads and 5.5 in PCD (139.7 mm) matches common UK trailer fitments, including many Ifor Williams trailer applications using Knott-pattern 200x50 brakes. The drum is precision-machined for correct fit and consistent braking contact with the shoes under normal towing loads.
Key Features:
- Brake size: 200 mm internal diameter x 50 mm shoe width
- Stud pattern: 4 x M12 x 1.5 threaded studs
- PCD: 5.5 in (139.7 mm) four-stud layout
- Supplied with bearing: 42490 / MP1875B pre-fitted
- Non-Genuine compatible part for Knott 200x50 systems
- Direct fit to Knott-style 200x50 brake backplates
- Ready-to-fit hub and drum assembly reduces installation time
- Helps ensure even shoe contact and stable braking performance
- Suitable as replacement on many Ifor Williams trailer hubs
- Size 200x50 marking for quick identification on service parts
Typical Applications:
Used on general-duty trailers, plant trailers, livestock trailers, and horseboxes built around Knott 200x50 braking systems. The drum provides the friction surface for the brake shoes, supports the wheel via the hub, and houses the bearing to transfer load to the stub axle during towing and braking.
Also known as:
200x50 brake drum, 4-stud 5.5 PCD drum, trailer brake hub drum, Knott pattern drum, 200 mm x 50 mm hub, trailer hub and drum assembly.
Alternate Part Numbers:
MP21302B, MP1687B, 42490, MP1875B
Product Specifications
| L&S Part No. | 211 063 |
|---|---|
| Part Type | Genuine Part |
| Unit of Sale | 1 |
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