The Wacker Neuson Square Key is a genuine OEM component designed for RD27-100 and RD27-120 series hydrostatic vibratory rollers. As a direct OEM replacement, this square key is sourced from Wacker Neuson and manufactured to the same specifications as the original part installed at the factory. Confirmed fitment covers RD27-100 and RD27-120 roller configurations, making it a straightforward swap during drivetrain service or repair.
Key Features
- Genuine OEM Material and Dimensional Accuracy — Manufactured to exact hardness and dimensional tolerances required for positive torque transmission between shaft and hub without slippage or deformation.
- Direct Drop-In Installation — Machined to seat flush in the keyway slot, ensuring correct alignment and a secure mechanical connection without filing or fitting.
- Confirmed Fitment for RD27 Series Rollers — Compatible with RD27-100 and RD27-120 hydrostatic vibratory rollers across multiple machine configurations.
- Protects Shaft and Hub from Rotational Damage — A correctly sized square key prevents shaft and hub keyway wear caused by a loose or undersized key, preserving surrounding drivetrain components.
- Drive System Integrity — Maintaining the correct key in the drivetrain ensures full, consistent power transfer to the drum, which is critical to compaction performance on asphalt and soil applications.
A square key is a small but mechanically critical component that locks a rotating shaft to a hub, pulley, sprocket, or gear, ensuring the two turn together as a single unit. In hydrostatic vibratory rollers like the RD27 series, it plays a direct role in transmitting power through the drivetrain to the drum. When a square key wears, shears, or goes missing, the connected component will spin freely on the shaft, resulting in a complete loss of drive or drum function until the key is replaced.
Part Details
| Part Number | 5000162346 |
|---|---|
| Old Part Number | 0162346 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Square Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620007, 5000620037 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000009469, 5000620038 |
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.
