The Wacker Neuson Woodruff Key 3X3.7 St 60 is a genuine OEM component designed for RD7H, RD7H-ES, and RD7H-S series double drum vibratory rollers. Sourced directly from Wacker Neuson, this part matches the original specification exactly, so it installs into the keyway without adjustment or fitting work. Compatible with both standard and EU-spec variants, the covers the full RD7H tandem roller lineup.
Key Features
- Genuine OEM Spec Key Profile — Manufactured to the exact 3X3.7 Woodruff profile, ensuring correct seating depth and contact area within the keyway for consistent torque transfer.
- Drop-In Keyway Fit — Matches the original slot dimensions on RD7H series drums and shafts, so installation is straightforward with standard tooling.
- Broad RD7H Series Coverage — A single part number covers RD7H, RD7H-ES, RD7H-S, and their EU-specification counterparts, consolidating your parts inventory.
- Torque Integrity Under Vibration — A correctly fitted Woodruff key holds shaft-to-hub alignment under the continuous vibration loads that define roller operation; a worn or missing key allows fretting and shaft damage.
- St 60 Grade Steel Construction — The St 60 material designation indicates the hardness and shear-strength grade appropriate for the drive loads in this application, maintaining the integrity of the keyed connection over the service life of the machine.
A Woodruff key is a small, semicircular steel component that sits in a matching slot — called a keyway — cut into both a shaft and its mating hub or gear. Its job is to lock the two parts together rotationally so that torque is transferred cleanly from one to the other without slippage. In a double drum vibratory roller like the RD7H series, the vibration exciter shaft operates under continuous cyclic loading, and the Woodruff key ensures the eccentric weights or drive components remain positively located on the shaft. When a key shears, deforms, or works loose, the shaft and hub begin to slip relative to each other, causing rapid wear to the keyway, loss of vibration output, and potential damage to surrounding components.
Part Details
| Part Number | 5000202446 |
|---|---|
| Old Part Number | 0202446 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Woodruff Key 3X3.7 St 60 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD 7ES | RD7H-ES EU | 5000620794 |
| RD7H-ES Tandem Roller | RD7H-ES | 5000009408 |
| RD7H-S ROLLER,DOUBLE DRUM | RD7H-S | 5000009487 |
| RD 7S | RD7H-S EU | 5000620795 |
| Double Drum Vibratory Roller | RD7H | 5000008042 |
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.
