The Wacker Neuson Shaft Core SM4S is a genuine OEM component designed for M1500 and M2500 series mixers, covering 120V US, 230V EU, and 120V GB variants. As a direct factory replacement, this part meets the exact design specifications of the original, ensuring compatibility across the full range of supported configurations. Whether you're servicing an M1500 or an M2500, part number is the correct OEM choice to restore your machine to proper working order.
Key Features
- Genuine OEM Core Shaft Integrity — Manufactured to the original dimensional tolerances required for smooth rotational transfer inside the SM4S drive system, with no deviation from Wacker Neuson's design spec.
- Drop-In Drive System Replacement — Engineered to seat and connect exactly as the original shaft core, working within the existing drive assembly without adaptation or re-engineering.
- Broad M-Series Fitment — Confirmed fit across M1500 and M2500 series mixers in 120V US, 230V EU, and 120V GB configurations, covering multiple build variants.
- Restored Mixing Performance — A worn or damaged shaft core can cause loss of drive engagement, vibration, or erratic drum behavior; replacing it with 5100022655 restores consistent torque delivery to the mixing drum.
- Direct from the Wacker Neuson Parts Catalog — Supplied under the same part number used by Wacker Neuson dealers, so you can order with confidence that the part matches your machine's bill of materials.
The shaft core is the central rotating element within the drive assembly of the mixer, transmitting torque from the motor through to the drum. It carries the full mechanical load of the mixing operation, so its dimensional accuracy and material strength are critical to smooth, consistent drum rotation. When a shaft core wears, bends, or develops surface damage, the result is typically vibration, noise, loss of drive efficiency, or complete failure of drum engagement — making timely replacement essential to keeping the mixer operational.
Part Details
| Part Number | 5100022655 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Shaft Core SM4S |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| M1500/120 | M1500/120 US | 5100004500 |
| M1500/230 | M1500/230 EU | 5100005142 |
| M1500/120 GB | M1500/120 GB | 5100005145 |
| M2500/120 | M2500/120 US | 5100006000 |
| M2500/230 | M2500/230 EU | 5100009717 |
| M2500/120 | M2500/120 GB | 5100010890 |
| Drive Engine | M2500/230 EU W | 5100047311 |
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.
