The Wacker Neuson Unbalance is a genuine OEM component designed for the RD40-130 and RD45-140 series tandem rollers, including C, O, DPF, and.3 variants. As a direct OEM part, it is manufactured to the same specifications as the original, ensuring proper fit and correct vibratory function across all covered models. This part is confirmed compatible with a wide range of RD40-130 and RD45-140 configurations, making it the straightforward choice for restoring drum vibration performance on your machine.
Key Features
- Genuine OEM Vibratory Mass Specification — Manufactured to the original eccentric weight specification, ensuring the correct centrifugal force output for effective compaction performance.
- Direct Drop-In Installation — Engineered to mount in the same position as the original unit, allowing straightforward installation without reworking drum components.
- Broad RD Series Compatibility — Fits RD40-130 and RD45-140 tandem rollers across standard, C, O, DPF, and .3 variants, covering a wide production range of these machines.
- Restores Compaction Output — A worn or failed unbalance reduces drum amplitude and compaction force; replacing it returns the machine to full vibratory performance and proper compaction density results.
- Verified Part Number — Sourced directly from Wacker Neuson as part number 5100012149, eliminating guesswork when ordering a replacement for this application.
The unbalance — also referred to as an eccentric weight or vibratory mass — is the component inside the compaction drum that generates the oscillating force used to compact soil, asphalt, or aggregate. It is driven by the drum's vibratory shaft, and as it rotates off-center, it creates the centrifugal force that causes the drum to vibrate at the designed amplitude and frequency. When the unbalance is worn, damaged, or out of balance, the drum loses compaction effectiveness, which can result in inconsistent surface density, increased pass counts, and accelerated wear on surrounding drivetrain components.
Part Details
| Part Number | 5100012149 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Unbalance |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD40-130 Tandem Roller | RD40-130 | 5100011391, 5100047382 |
| RD45-140 Tandem Roller | RD45-140 | 5100011392, 5100047383 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| RD40-130c | RD40-130c | 5100047384 |
| RD45-140c | RD45-140c | 5100047385 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
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.
