The Multiquip 17121 Square Key.375X1.25 Round End is a genuine OEM component designed for VC2B and VC1A series concrete vibrators. Sourced directly from Multiquip, this key meets the exact dimensional and material standards required for proper power transmission within the vibrator drive assembly. It is a direct fit for VC2B and VC1A equipment, ensuring the correct engagement between mating shafts and drive components. DHS Equipment stocks this OEM part so you can get your vibrator back in service without guesswork.
Key Features
- Genuine OEM Dimensional Accuracy — Machined to the exact .375 x 1.25 specification required for secure seating in the keyway without play or slippage.
- Round End Profile — The round-end geometry matches the broached keyway slot in the VC series drive assembly for a clean, tool-free drop-in installation.
- Confirmed Fitment — Verified for Multiquip VC2B and VC1A concrete vibrators, so you order with confidence.
- Torque Transfer Integrity — A correctly seated drive key locks the shaft and hub in rotational alignment, maintaining full vibration output to the head; a worn or missing key causes slippage and loss of compaction performance.
- Genuine Multiquip OEM Part — Produced to the same material hardness and finish standards as the original, preventing premature wear against mating keyway surfaces.
A square drive key is a small but critical component in a concrete vibrator's power transmission path. It sits in a machined slot — the keyway — between a shaft and a hub or coupling, locking them together so they rotate as a single unit and deliver full torque to the vibrator head. If this key shears, deforms, or goes missing, the shaft spins independently of the driven component, resulting in zero vibration output and potential damage to the surrounding keyway surfaces. Replacing a worn or failed key promptly restores full power transfer and protects the more costly shaft and hub components from further wear.
Part Details
| Part Number | 17121 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Square Key .375X1.25 Round End |
Compatibility & Fitment
| Name | Model |
|---|---|
| Vibrators | VC2B |
| Vibrators | VC1A |
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.
