The Wacker Neuson 5100005703 Flex Shafts SM 1E is a genuine OEM flexible shaft assembly designed for the M2500 and M1500 series internal concrete vibrators. As a direct OEM replacement, part 5100005703 is produced to the same specifications as the original component, ensuring a correct connection between the drive motor and the vibrating head. Fitment covers multiple voltage and regional configurations across the M2500 and M1500 families, including 120V US, 230V EU, and 120V GB variants.
Key Features
- Genuine OEM Flex Shaft Construction — Manufactured by Wacker Neuson to original torque-transmission tolerances, maintaining the rotational consistency that internal concrete vibration demands.
- Direct Drop-In Replacement — Connects to the SM 1E drive interface without adaptation, fitting the same mounting points as the factory-installed shaft.
- Broad M-Series Compatibility — Confirmed fitment across M2500/230 EU, M2500/120 US, M2500/120 GB, M1500/120 US, M1500/120 GB, and M1500/230 EU vibrator configurations.
- Consistent Vibration Transfer — A properly functioning flex shaft delivers smooth, uninterrupted power from the motor to the vibrating head; a worn or cracked shaft causes erratic vibration output and incomplete concrete consolidation.
- Electrical Safety Compliance — As a driven component in a live electrical vibrator system, using the correct OEM shaft maintains the insulation integrity and mechanical clearances specified for safe operation in wet concrete environments.
The flex shaft in an internal concrete vibrator serves as the mechanical link between the electric drive motor and the vibrating poker head. It transmits rotational energy through a flexible casing, allowing the operator to maneuver the head through freshly poured concrete while the motor remains stationary. When the flex shaft wears, kinks, or breaks, vibration output drops sharply or stops entirely — leaving air pockets and voids in the concrete that compromise structural integrity. Replacing a failed shaft promptly with the correct OEM part restores full consolidation performance and protects the drive motor from the strain of working against a damaged assembly.
Part Details
| Part Number | 5100005703 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flex Shafts SM 1E |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Drive Engine | M2500/230 EU W | 5100047311 |
| M2500/120 | M2500/120 US | 5100006000 |
| M2500/230 | M2500/230 EU | 5100009717 |
| M1500/120 | M1500/120 US | 5100004500 |
| M2500/120 | M2500/120 GB | 5100010890 |
| M1500/120 GB | M1500/120 GB | 5100005145 |
| M1500/230 | M1500/230 EU | 5100005142 |
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.
