The Multiquip 1580 Square Key is a genuine OEM component designed for HDA-SERIES walk-behind power trowels. Sourced directly from Multiquip, this Square Key meets the original equipment specification, ensuring a correct and secure fit within the drivetrain assembly. Compatible with HDA-SERIES machines, this part is the straight OEM replacement for worn or lost keys in that trowel family. DHS Equipment stocks genuine Multiquip parts so you can get your trowel back in service without guesswork.
Key Features
- Genuine OEM Material Grade — Manufactured to Multiquip's original hardness and dimensional tolerances, so the key seats firmly and transmits torque without slipping or deforming under load.
- Drop-In Drivetrain Fit — Sized to the original keyway dimensions on HDA-SERIES trowel shafts, allowing direct installation without filing, shimming, or modification.
- HDA-SERIES Compatibility — Verified for Whiteman HDA-SERIES walk-behind power trowels, giving you confidence you are ordering the correct part the first time.
- Torque Transmission Integrity — A correctly fitted square key locks the shaft and hub in alignment, delivering smooth, consistent blade rotation and preventing the slippage that causes uneven finishing and accelerated wear on mating components.
- Genuine Multiquip Part Number — Part number 1580 is the exact OEM reference, making verification against your parts manual or service diagram straightforward.
A square key is a small but critical drivetrain component that sits in a machined slot — called a keyway — between a rotating shaft and a hub or sprocket. It prevents relative rotation between the two parts, ensuring that rotational force from the engine is transferred cleanly and completely to the trowel blades. When a square key shears, wears, or goes missing, the shaft spins freely inside the hub, resulting in total loss of blade drive and potential damage to the keyway itself if the machine is run in that condition.
Have questions about fitment or need help confirming this is the right part for your machine? Contact the DHS Equipment team for assistance.
Part Details
| Part Number | 1580 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Square Key |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
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.
