The Wacker Neuson Woodruff Key is a genuine OEM Woodruff Key designed for a wide range of Wacker Neuson vibratory plate compactors and rammers, including the WP1540A, WP1550A, BPS1030A, BPS1135A, BPS1340A, BS62-4A, BS68-4A, PDT2A, and PDT3A series. As a genuine OEM component, this part is manufactured to the exact same specification as the original, ensuring a direct fit with no guesswork at installation. Sourced directly through Wacker Neuson's authorized parts supply chain, part is the correct replacement when your original Woodruff Key is worn, sheared, or missing. Keep this small but critical component on hand to avoid extended equipment downtime on the job.
Key Features
- Exact OEM Geometry: — Machined to the precise semi-circular profile and dimensional tolerances required for proper shaft-to-hub engagement on Wacker Neuson equipment.
- Drop-In Shaft Fit: — Seats directly into the existing keyway on the crankshaft or drive shaft with no filing, grinding, or modification at installation.
- Broad Model Coverage: — Compatible with WP1540A, WP1550A, BPS1030A, BPS1135A, BPS1340A, BS62-4A, BS68-4A, PDT2A, PDT3A, PDI3A, and additional US and EU variants.
- Torque Transfer Integrity: — A correctly fitted Woodruff Key locks the drive component to the shaft so full engine torque reaches the eccentric weight or pump impeller without slippage.
- Drive Safety Compliance: — A sheared or missing key allows driven components to spin free on the shaft, creating an uncontrolled mechanical hazard; using the correct OEM replacement restores safe, predictable machine operation.
- Genuine Wacker Neuson Part: — Supplied under OEM part number 5100056809, confirming authenticity and traceability for service records and fleet maintenance documentation.
A Woodruff Key is a small, semi-circular metal key that fits into matching slots cut into both a shaft and the hub of a component mounted on that shaft — such as a drive pulley, flywheel, or eccentric assembly. Its job is to lock the two parts together rotationally so that torque from the engine transfers directly to the driven component without slipping. When a Woodruff Key shears — which typically happens under shock loads or if the fastening hardware loosens — the driven component spins freely on the shaft, the machine loses its working function entirely, and continued operation can cause accelerated wear to the shaft and hub keyways themselves. Replacing a failed key promptly with the correct OEM part protects the surrounding components and restores full machine performance.
Part Details
| Part Number | 5100056809 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Woodruff Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| WP1540Aw | WP1540Aw US | 5100018327 |
| WP1550Aw | WP1550Aw US | 5100018324 |
| WP1540A | WP1540A US | 5100018328 |
| BPS1340Aws | BPS1340Aws | 5100060129, 5100067726 |
| PDT2A | PDT2A | 5000620769 |
| PDT3A | PDT3A | 5000620773 |
| PDI3A | PDI3A | 5000620775 |
| WP1550A | WP1550A US | 5100018325 |
| WP1550A | WP1550A | 5100062423 |
| WP1550Aw | WP1550Aw | 5100062424 |
| BS62-4Ab/28 | BS62-4Ab/28 | 5100061966, 5100070526 |
| BS68-4Ab/28 | BS68-4Ab/28 | 5100061970, 5100070525, 5100070527 |
| BS62-4A/28 | BS62-4A/28 | 5100068373 |
| BS68-4A/28 | BS68-4A/28 | 5100068375 |
| BS68-4A/28 CN | BS68-4A/28 CN | 5100070152 |
| Vibratory Plate BPS1030Aw US | BPS1030Aw US | 5100080503 |
| Vibratory Plate BPS1030A US | BPS1030A US | 5100080504 |
| BPS1135Aw | BPS1135Aw US | 5100080505 |
| BPS1135A | BPS1135A US | 5100080506 |
| BPS1340Aw | BPS1340Aw US | 5100080507 |
| BPS1340A | BPS1340A US | 5100080508 |
| Vibratory Plate BPS1030Aw EU | BPS1030Aw EU | 5100084343 |
| Vibratory Plate BPS1030A EU | BPS1030A EU | 5100084344 |
| Vibratory Plate BPS1135Aw EU | BPS1135Aw EU | 5100084347 |
| Vibratory Plate BPS1135A EU | BPS1135A EU | 5100084348 |
| Vibratory Plate BPS1340Aw EU | BPS1340Aw EU | 5100084349 |
| Vibratory Plate BPS1340A EU | BPS1340A EU | 5100084350 |
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.
