The Wacker Neuson is a genuine OEM Woodruff Key designed for the PDT2A, PDT3A, PDT3, PDI2A(I), PDI3A, and PDI3A(I) series diaphragm pumps. Sourced directly from Wacker Neuson, this key is manufactured to the exact dimensions required for proper shaft-to-drive engagement across the PDT and PDI pump families. It drops into the original keyway without any modification, ensuring the drive components lock up exactly as they did at the factory. If your pump's impeller or drive hub is showing slippage or irregular rotation, replacing the Woodruff Key is the correct first step before suspecting deeper drivetrain damage.
Key Features
- Exact Dimensional Profile: — Cut to OEM tolerances so the key seats fully in the keyway without rocking, preventing shaft-to-hub micro-movement that causes premature wear.
- Genuine OEM Part: — Supplied by Wacker Neuson, this is the same Woodruff Key installed on the production line — not an approximation.
- Broad PDT and PDI Pump Coverage: — Compatible across the PDT2A, PDT3A, PDT3, PDI2A(I), PDI3A, and PDI3A(I) diaphragm pump series, covering both 2-inch and 3-inch discharge configurations.
- Locks Drive Torque Cleanly: — A correctly fitted Woodruff Key transfers rotational force from the shaft to the hub without slip, maintaining consistent pump output and protecting surrounding components.
- Simple Service Item: — Small in size but critical to drivetrain integrity; keeping a spare 5000180283 on hand means a failed key never sidelines a pump for longer than one service stop.
A Woodruff Key is a small, semi-circular metal key that sits in a matching slot (keyway) machined into a rotating shaft and its mating hub or gear. Its job is to lock those two components together rotationally so that torque is transferred cleanly from one to the other. In a diaphragm pump like the PDT or PDI series, this means the drive shaft and impeller or eccentric hub turn as a single unit rather than spinning independently. When a Woodruff Key shears or wears, the hub can rotate freely on the shaft, resulting in a loss of pumping action, unusual noise, or erratic flow — even though the engine or motor is running normally. Replacing the key promptly restores full drive engagement and prevents secondary damage to the shaft and hub bores.
Part Details
| Part Number | 5000180283 |
|---|---|
| Old Part Number | 0180283 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Woodruff Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT2A | PDT2A | 5000620769, 5100075510 |
| PDT2 Pump, Diaphragm | PDT2 | 5000620770 |
| PDI2A(I) | PDI2A(I) | 5000620772, 5100075511 |
| PDT3A | PDT3A | 5000620773, 5100075507 |
| PDT3 | PDT3 | 5000620774 |
| PDI3A | PDI3A | 5000620775, 5100075508 |
| PDI3A(I) | PDI3A(I) | 5000620776, 5100075509 |
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.
