The Wacker Neuson 5100005707 Flex Shafts SM 1S is a genuine OEM flexible shaft assembly designed for the M1500 and M2500 series internal concrete vibrator drive engines. As a factory-sourced component, the 5100005707 is manufactured to the same specifications as the original part, ensuring a correct, direct-fit installation without guesswork. Verified fitment covers M1500/230 EU, M1500/120 US, M1500/120 GB, M2500/120 GB, M2500/120 US, M2500/230 EU, and M2500/230 EU W drive engine configurations. When the flex shaft begins to wear or fail, vibration output to the poker head drops off, compromising concrete consolidation quality — replacing it promptly keeps your vibrator performing at full capacity.
Key Features
- Genuine OEM Flex Shaft Construction — Manufactured to Wacker Neuson's original torque-transfer specifications, maintaining consistent rotational force delivery through the full length of the shaft.
- Direct-Fit Replacement — Engineered to connect to M1500 and M2500 series drive engines exactly as the original, with matching end fittings and shaft diameter for tool-free alignment.
- Broad M-Series Compatibility — Confirmed fitment across M1500/120, M1500/230, M2500/120, and M2500/230 variants in US, EU, and GB configurations, as well as the M2500/230 EU W drive engine.
- Consistent Vibration Transmission — A sound flex shaft transfers full motor output to the vibrator head, ensuring thorough consolidation of concrete and elimination of voids in poured slabs and forms.
- Extended Service Life — OEM-grade materials resist the torsional stress and heat generated during continuous vibrator operation, slowing the fatigue that leads to shaft failure mid-pour.
The flex shaft is the mechanical link between the drive engine and the vibrator head in an internal concrete vibrator system. It transmits the high-speed rotational energy from the motor down through a flexible housing to the poker head, which converts that rotation into the vibration needed to consolidate fresh concrete. When a flex shaft is worn, kinked, or broken, the vibrator head loses power or stops spinning entirely, resulting in inadequate consolidation and potential structural weakness in the finished pour.
Part Details
| Part Number | 5100005707 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flex Shafts SM 1S |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| M1500/230 | M1500/230 EU | 5100005142 |
| M1500/120 | M1500/120 US | 5100004500 |
| M2500/120 | M2500/120 GB | 5100010890 |
| M1500/120 GB | M1500/120 GB | 5100005145 |
| M2500/120 | M2500/120 US | 5100006000 |
| M2500/230 | M2500/230 EU | 5100009717 |
| 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.
