The Wacker Neuson Unbalance Shaft is a genuine OEM component designed for the RD45-140 series tandem rollers, including the RD45-140, RD45-140 C, RD45-140 O, and their.3-series variants. As a direct OEM replacement sourced through authorized Wacker Neuson parts channels, it meets the same design and material standards as the original shaft fitted at the factory. Whether you're servicing a standard RD45-140 or one of the specialized C or O configurations, part number ensures a drop-in fit with no adaptation required at installation. Confirm your model number before ordering to match the correct specification for your machine.
Key Features
- Genuine OEM Vibration Spec — Manufactured to the exact eccentric mass and rotational balance spec required to deliver consistent compaction output in RD45-140 tandem rollers.
- Direct Drum Drive Compatibility — Engineered to interface directly with the drum assembly on RD45-140 series machines, reinstalling in the original mounting position without modification.
- Broad RD45-140 Series Coverage — Fits the RD45-140, RD45-140 C, RD45-140 O, and all corresponding .3-series models, covering a wide range of this compactor family.
- Sustained Compaction Force — A correctly functioning unbalance shaft maintains the drum's vibratory amplitude and frequency, keeping compaction output consistent across varying soil and asphalt conditions.
- OEM Material Integrity — Built from the same grade materials as the original part, ensuring the shaft withstands the continuous high-speed rotational loads generated during vibratory compaction cycles.
The unbalance shaft is the core component of a vibratory roller's compaction system. It is an eccentrically weighted shaft that spins at high speed inside the drum assembly, generating the rapid vibration that forces aggregate and soil particles into a dense, stable layer. Without a properly functioning unbalance shaft, the drum loses its vibratory force — the machine will still roll, but compaction depth and density will fall short of spec, leading to weak base layers and failed compaction tests. When the shaft wears, becomes damaged, or develops imbalance, operators typically notice increased vibration in the machine frame, uneven compaction patterns, or unusual noise from the drum — all signs that replacement is needed promptly.
Part Details
| Part Number | 5100011807 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Unbalance Shaft |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD45-140 Tandem Roller | RD45-140 | 5100011392 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
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.
