The Wacker Neuson Weight is a genuine OEM component designed for the AR 26, AR 34, AR 36, and ARFU series external concrete vibrators. Sourced directly from Wacker Neuson, this replacement weight carries the same part number and production specification as the original, making it a verified direct replacement. It is compatible across an extensive range of AR and ARFU models spanning multiple voltage and frequency configurations, including 042, 115, 120, 230, 240, 250, 400, 440, 460, 480, and 500-volt variants. If your external vibrator is showing signs of reduced vibration output or imbalance, replacing the weight with a genuine restores the machine to its original operating specification.
Key Features
- Genuine OEM Mass Specification — Manufactured to the exact mass and dimensional tolerances set by Wacker Neuson, ensuring the eccentric imbalance required for correct vibration amplitude is fully restored.
- Drop-In Replacement — Matches the original mounting configuration inside the AR and ARFU vibrator housing, requiring no machining or modification to the eccentric shaft assembly.
- Broad Series Coverage — Fits AR 26, AR 34, AR 36, and ARFU series external vibrators across a wide range of voltage and phase configurations used on North American and international jobsites.
- Restores Vibration Output — A worn or missing weight directly reduces the centrifugal force the vibrator delivers to formwork, leading to poor concrete consolidation and surface voids. This part brings output back to spec.
- Operational Safety — An incorrectly weighted or imbalanced eccentric assembly creates abnormal vibration patterns that accelerate bearing wear and can stress mounting hardware; the correct OEM weight maintains safe, balanced operation.
The weight in a Wacker Neuson external concrete vibrator is a precision-machined eccentric mass mounted on the rotor shaft inside the vibrator housing. As the motor spins, the off-center mass generates centrifugal force, which is transferred through the vibrator body and into the formwork or concrete form it is attached to. This controlled vibration consolidates freshly placed concrete, eliminating air pockets and ensuring uniform density throughout the pour. When the weight is worn, cracked, or missing, the vibrator loses centrifugal force, vibration amplitude drops, and concrete consolidation becomes inconsistent — potentially compromising the structural integrity of the finished pour.
Part Details
| Part Number | 5000127791 |
|---|---|
| Old Part Number | 0127791 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Weight |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| External Vib. ARFU 36/6/230 | ARFU 36/6/230 | 5000610000 |
| ARFU26/6/120 US | ARFU26/6/120 US | 5100004244 |
| ARFU 36/6/115/US EXT. VIBRATOR | ARFU 36/6/115 | 5000610002, 5000610003 |
| AR 26/6/042 cs | AR 26/6/042 cs | 5100003940 |
| ARFU26/6/230 | ARFU26/6/230 | 5100004243 |
| ARFU26/6/115 | ARFU26/6/115 UK | 5100004245 |
| AR26/3/230w | AR 26/3/230 w | 5100003938 |
| AR 26/6/250 | AR 26/6/250 | 5100003953 |
| AR26/3/400 | AR 26/3/400 | 5100003960, 5000008982 |
| AR26/3,6/230 | AR 26/3,6/230 | 5100003961 |
| AR36/6/042 EXTERNAL VIBRATOR | AR 36/6/042 | 5000008933, 5000008965, 5000008986 |
| External Vib. AR 36/12/042 | AR 36/12/042 | 5000008961 |
| External Vib. AR 36/6/042LBV | AR 36/6/042 LBV | 5000008962 |
| External Vib. AR 36/6/115 | AR 36/6/115 | 5000008963 |
| AR36/3.6/115W EXT. VIBRATOR | AR 36/3,6/115 W US | 5000008964 |
| External Vib. AR 36/3/230 W | AR 36/3/230 W | 5000008967 |
| AR36/3.6/240W-EXT.VIBRATOR | AR 36/3,6/240 W | 5000008968 |
| Ext. Vib. AR 36/3/230 Vario | AR 36/3/230 Vario | 5000008969 |
| External Vib. AR 36/3/240W | AR 36/3/240 W | 5000008970 |
| External Vib. AR 36/6/250 | AR 36/6/250 | 5000008971 |
| External Vib. AR 36/3/400 | AR 36/3/400 | 5000008973 |
| External Vib. AR 36/3,6/400 | AR 36/3,6/400 | 5000008974 |
| External Vib. AR 36/3,6/440 | AR 36/3,6/440 | 5000008976 |
| External Vib. AR 36/3,6/460 | AR 36/3,6/460 | 5000008977 |
| External Vib. AR 36/3,6/480 | AR 36/3,6/480 | 5000008978 |
| External Vib. AR 36/3/500 | AR 36/3/500 | 5000008979 |
| External Vib. AR 26/3/230W | AR 26/3/230 W | 5000008981 |
| AR 34/6/042 | AR 34/6/042 | 5100002161 |
| AR34/6/250 | AR34/6/250 | 5100002826 |
| AR 34/3/400 | AR 34/3/400 | 5100002830 |
| AR 34/3/230 v | AR 34/3/230 v | 5100002831 |
| AR26/6/042 | AR26/6/042 | 5100003120 |
| AR 26/6/042 3,5kN | AR 26/6/042 3,5kN | 5100004048 |
| AR36/3.6/240W-EXT.VIBRATOR | AR 36/3,6/230 | 5000610225 |
| External Vibrator AR36/6/41,5 US | AR 36/6/41,5 US | 5000610373 |
| External Vib. AR36/6/41,5 S3,5 US | AR 36/6/41,5 S3,5 US | 5000610374 |
| External Vib. AR36/6/41,5 LBV US | AR 36/6/41,5 LBV US | 5000610375 |
| External Vib. AR36/6/41,5 CS US | AR 36/6/41,5 CS US | 5000610376 |
| External Vibrator AR 34/3,6/230 | AR 34/3,6/230 | 5100002762 |
| External Vibrator AR 34/3,6/460 | AR 34/3,6/460 | 5100002822 |
| External Vibrator AR 34/6/115 | AR 34/6/115 | 5100002825 |
| External Vibrator AR 34/3/500 | AR 34/3/500 | 5100002829 |
| External vibrator AR 26/3,6/120 w | AR 26/3,6/120 w | 5100003962 |
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.
