The Multiquip 9180 is a genuine OEM Key 5/16" x 2-1/4" SQ. designed for Whiteman walk-behind and ride-on power trowel models including the HDA Series, JWN24HTCSL/HSCSL, HTN28K, HTN27K, and HTN-KOHLER/ONAN/HONDA series. As a direct OEM replacement, part 9180 meets the original dimensional specifications required to maintain proper shaft-to-hub engagement on Multiquip trowel drivelines. Sourced directly through authorized Multiquip distribution, this key is built to the same tolerances as the original component it replaces.
Key Features
- OEM-Grade Dimensional Accuracy — Manufactured to the exact 5/16" x 2-1/4" square specification, ensuring correct load transfer between shaft and hub without slippage or play.
- Drop-In Shaft Fitment — Machined to seat cleanly into the keyway without filing or adjustment, allowing fast, straightforward installation during blade or gearbox servicing.
- Broad Trowel Series Coverage — Fits HDA Series walk-behind trowels and HTN/JWN ride-on models including HTN28K, HTN27K, JWN24HTCSL/HSCSL, and HTN-KOHLER/ONAN/HONDA configurations.
- Torque Transmission Integrity — A correctly fitted key locks rotating components in phase, enabling consistent blade pitch control and smooth trowel operation across finishing passes.
- Genuine Multiquip OEM Part — Supplied as an authorized OEM component, so the geometry, material grade, and shear tolerance match what Multiquip specified for these trowel driveline assemblies.
A woodruff or square drive key is a small but load-critical component that sits in a machined slot — the keyway — between a rotating shaft and the hub of a gear, sprocket, or blade assembly. It locks the two components together rotationally, ensuring that torque from the engine or gearbox transfers directly to the working attachment without slipping. When a key shears, wears, or goes missing, the driven component spins freely or becomes erratic, leading to uneven blade pitch, loss of trowel control, and accelerated wear on the surrounding keyway surfaces. Replacing a damaged key promptly with the correct OEM part protects the shaft and hub from the further damage that continued operation without one will cause.
Part Details
| Part Number | 9180 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Key 5/16" x 2-1/4" SQ. |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
| Whiteman Ride-On Power Trowels | JWN24HTCSL/HSCSL |
| Whiteman Ride-On Power Trowels | HTN28K |
| Whiteman Ride-On Power Trowels | HTN27K |
| Whiteman Ride-On Power Trowels | HTN-KHOLER/ONAN/HONDA |
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.
