The Wacker Neuson Roller Bearing is a genuine OEM component designed for the APT4S, APT4T, APT6S, and APT6T series self-priming pumps. As a direct Wacker Neuson OEM part, it is manufactured to the exact tolerances required for correct installation and consistent performance in these pump units. This bearing fits across the full APT4/APT6 lineup, including skid-mount, surge brake, electric brake, and cold weather variants. Replacing a worn or damaged roller bearing with the correct OEM part helps restore proper shaft support and smooth pump operation.
Key Features
- OEM-Grade Bearing Tolerance: — Manufactured to the exact radial load and dimensional specs required for the APT pump shaft, ensuring correct seating and consistent rotational performance.
- Drop-In Replacement: — Engineered to the same dimensions as the original, so it installs directly into the bearing housing without modification or adjustment.
- Broad APT Series Fitment: — Confirmed fitment across APT4S, APT4T, APT6S, and APT6T models, including surge brake, electric brake, and cold weather configurations.
- Protects Pump Shaft Integrity: — A functioning roller bearing keeps the pump shaft properly aligned under load; a worn bearing accelerates shaft wear, increases vibration, and can lead to seal failure.
- Genuine Wacker Neuson OEM Part: — Sourced directly from Wacker Neuson, carrying part number 5200021797 for verified compatibility and straightforward parts ordering.
A roller bearing supports the rotating shaft inside the pump assembly, absorbing radial loads generated during operation and allowing the shaft to spin freely with minimal friction. In a self-priming pump like the APT series, the bearing works continuously under the stresses of fluid movement and motor-driven rotation, making its condition critical to overall pump reliability. When a roller bearing wears, it can cause excess shaft play, increased vibration, heat buildup, and eventual damage to surrounding seals and housings — symptoms that typically worsen quickly if left unaddressed.
Part Details
| Part Number | 5200021797 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Roller Bearing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6S Pump w/Skid | APT6S | 5200018982 |
| APT6T Pump, Surge Brake | APT6T | 5200019646, 5200019647 |
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794, 5200019795 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake | APT4T | 5200019643, 5200019644 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT6S Pump w/Skid, Cold Weather | APT6S CW | 5200019799 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
