The Wacker Neuson 5100012140 Key is a genuine OEM component designed for the RD series tandem rollers, covering the RD18, RD24, RD27, RD28, RD40, and RD45 model families across a wide range of configurations including standard, combination, open-ROPS, canopy, DPF, and electric variants. As a direct OEM replacement, part 5100012140 is sourced and specified by Wacker Neuson to match the original production component exactly. This key fits an extensive range of walk-behind and ride-on tandem roller variants used in asphalt and soil compaction applications.
Key Features
- Genuine OEM Specification — Manufactured to Wacker Neuson's original design tolerances, ensuring the key seats, engages, and transfers torque exactly as intended for this shaft-and-keyway application.
- Direct Drop-In Installation — Dimensioned to match the original keyway slot; installs without machining or modification to the mating shaft or hub.
- Broad RD Series Coverage — Fits RD18, RD24, RD27, RD28, RD40, and RD45 tandem roller families, including standard, canopy, open-ROPS, DPF, and electric configurations.
- Positive Power Transmission — A correctly fitted key locks the rotating component to its shaft, maintaining consistent drive engagement; a worn or missing key causes slippage, erratic drum behavior, and accelerated damage to the shaft and hub.
- Verified Part Number — Order with confidence using Wacker Neuson part number 5100012140; cross-reference your machine's serial number against the fitment list before ordering.
A key is a small precision-machined component that fits into a matching slot — called a keyway — cut into both a rotating shaft and the hub of a driven component such as a drum drive gear or pulley. Its purpose is to create a positive mechanical connection between the two parts, ensuring rotational force from the shaft is transferred to the driven component without slipping. When a key wears, shears, or goes missing, the shaft and hub spin independently of each other, causing loss of drive to the affected drum or component and potentially damaging the keyway surfaces themselves — turning a simple, inexpensive repair into a much costlier one.
Part Details
| Part Number | 5100012140 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD45-140 | RD45-140 | 5100047383, 5100011392 |
| RD24e-100c | RD24-100ce | 5100066733 |
| RD40-130 Tandem Roller | RD40-130 US | 5100021801 |
| RD24-100 DPF | RD24-100 DPF | 5100047380 |
| RD27-120c | RD27-120c.3 | 5100047371 |
| RD40-130o.3 | RD40-130o.3 | 5100047399 |
| RD27-120 C Tandem Roller | RD27-120 C | 5100011388 |
| RD40-130c.3 | RD40-130c.3 | 5100047397 |
| RD45-140c DPF | RD45-140c DPF | 5100055780 |
| RD45-140 O Tandem Roller | RD45-140 O | 5100011396 |
| RD24-100c | RD24-100c | 5100047376 |
| RD45-140 C Tandem Roller | RD45-140C US | 5100021804 |
| RD24-100o.3 | RD24-100o.3 | 5100047372 |
| RD45-140c.3 | RD45-140c.3 | 5100047398 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD18-100 | RD18-100 | 5100047361, 5100055775, 5100011383 |
| RD18-80 | RD18-80 | 5100055774, 5100047360, 5100011382 |
| RD18 | RD18-100.3 | 5100055947 |
| RD24-100 O Tandem Roller | RD24-100 O | 5100011389 |
| RD40-130.3 | RD40-130.3 | 5100047395 |
| RD24-100 C Tandem Roller | RD24-100C US | 5100021757 |
| RD45-140o.3 | RD45-140o.3 | 5100047400 |
| RD24-100 | RD24-100 | 5100047374, 5100011385 |
| RD24e-100 | RD24-100e | 5100066731 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
| RD28-120c | RD28-120c | 5100047377 |
| RD24-100o | RD24-100o | 5100047378 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD40-130o | RD40-130o | 5100047386 |
| RD45-140 Tandem Roller | RD45-140 US | 5100021802 |
| RD24e-100o | RD24-100oe | 5100066735 |
| RD28-120 DPF | RD28-120 DPF | 5100047390 |
| RD40-130 DPF | RD40-130 DPF | 5100055777 |
| RD40-130 O Tandem Roller | RD40-130O US | 5100021805 |
| RD24-100o DPF | RD24-100o DPF | 5100047393 |
| RD45-140 C Tandem Roller | RD45-140 C | 5100011394 |
| RD28-120 | RD28-120 | 5100047375 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD28-120c DPF | RD28-120c DPF | 5100047392 |
| RD40-130 C Tandem Roller | RD40-130 C | 5100011393 |
| RD28-120 C Tandem Roller | RD28-120C US | 5100021758 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD45-140o | RD45-140o | 5100047387 |
| RD40-130c DPF | RD40-130c DPF | 5100055779 |
| RD28-120 O Tandem Roller | RD28-120O US | 5100021800 |
| RD45-140 DPF | RD45-140 DPF | 5100055778 |
| RD28-120 Tandem Roller | RD28-120 US | 5100021756 |
| RD28-120o | RD28-120o | 5100047379 |
| RD 24-100.3 | RD 24-100.3 | 5100032197 |
| RD40-130 C Tandem Roller | RD40-130C US | 5100021803 |
| RD40-130 Tandem Roller | RD40-130 | 5100011391, 5100047382 |
| RD24-100 Tandem Roller | RD24-100 US | 5100021755 |
| RD 18-100 C | RD18-100c | 5100047362, 5100055776 |
| RD45-140o DPF | RD45-140o DPF | 5100055782 |
| RD45-140 O Tandem Roller | RD45-140O US | 5100021806 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| RD45-140c | RD45-140c | 5100047385 |
| RD24-100c.3 | RD24-100c.3 | 5100047370 |
| RD27-120 | RD 27-120.3 | 5100032198 |
| RD40-130o DPF | RD40-130o DPF | 5100055781 |
| RD45-140.3 | RD45-140.3 | 5100047396 |
| RD24-100 C Tandem Rollers | RD24-100 C | 5100011387 |
| RD24-100c DPF | RD24-100c DPF | 5100047391 |
| RD27-120 Tandem Roller | RD27-120 | 5100011386 |
| RD24-100 O Tandem Roller | RD24-100O US | 5100021759 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| RD27-120o | RD27-120o.3 | 5100047373 |
| RD27-120 O Tandem Roller | RD27-120 O | 5100011390 |
| RD28e-120o | RD28-120oe | 5100066736 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD40-130 O | RD40-130 O | 5100011395 |
| RD28e-120 | RD28-120e | 5100066732 |
| RD28-120o DPF | RD28-120o DPF | 5100047394 |
| RD28e-120c | RD28-120ce | 5100066734 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| RD40-130c | RD40-130c | 5100047384 |
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.
