The Wacker Neuson Roller Bearing is a genuine OEM roller bearing designed for the APT4S and APT4T pump series. As a factory-sourced component, it meets the exact tolerancing and load ratings specified for these machines, ensuring proper shaft support and smooth rotational performance. This bearing is confirmed to fit across the full APT4S and APT4T lineup, including surge brake, electric brake, and cold weather variants.
Key Features
- OEM Precision Tolerancing — Manufactured to exact radial clearance and load rating specs for the APT pump drivetrain, so the bearing seats and performs exactly as the machine requires.
- Direct Drop-In Replacement — Sized and profiled to install directly into the original bearing housing with no reworking of the surrounding components.
- Broad APT Series Coverage — Fits APT4S (standard and cold weather) and APT4T (surge brake, electric brake, and cold weather) pump configurations under a single part number.
- Sustained Shaft Support — A healthy roller bearing keeps the pump shaft running true and friction-free; a worn bearing leads to shaft misalignment, increased vibration, and accelerated wear on adjacent components.
- Genuine Wacker Neuson Part — Sourced directly through the Wacker Neuson OEM supply chain, backed by the same part number used in the original factory assembly.
A roller bearing supports and guides a rotating shaft by replacing sliding friction with rolling contact between the shaft and housing. In a water pump like the APT4S or APT4T, the roller bearing carries the radial loads generated by the impeller and shaft assembly, allowing the pump to turn smoothly and efficiently under continuous working conditions. When a roller bearing wears out or fails, shaft wobble increases, seals can be damaged by the resulting misalignment, and pump output drops — making timely replacement essential to keeping the unit operating as intended.
Part Details
| Part Number | 5200021796 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Roller Bearing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 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 |
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.
Wacker Neuson
Wacker Neuson Cylindrical Roller Bearing | 5100022902
