The Multiquip 505084 1/4" x 55 MM Key is a genuine OEM component designed for Essick and Whiteman mixer series equipment, including EM90P/S, EM70P/S, WM63E, WM63H5, WM63H8, WM70S/P, EM70SLF, EM90SLF, WM70SLF, WM70PLF, WM90SLF, WM90PLF, and WM90S/P models. As a direct Multiquip OEM part, 505084 is manufactured to the same specification as the original component installed at the factory, ensuring a drop-in fit with no guesswork. This key seats precisely into its keyway to lock rotating shaft components in proper alignment, maintaining the mechanical integrity of the drivetrain during operation. DHS Equipment stocks this part and is an authorized Multiquip dealer, so you can order with confidence knowing you are receiving an authentic replacement.
Key Features
- Genuine OEM Material Grade — Machined to the correct dimensional tolerances and hardness spec for shaft-to-component locking in mixer drivetrains, preventing the slippage that undersized or soft aftermarket keys can cause.
- Direct Keyway Fit — Sized at 1/4" x 55 MM to seat fully in the OEM keyway slot without filing, shimming, or modification, keeping installation straightforward in the field.
- Broad Mixer Compatibility — Confirmed fitment across Essick mixer models (EM70P/S, EM90P/S, EM70SLF, EM90SLF) and Whiteman mixer models (WM63E, WM63H5, WM63H8, WM70S/P, WM70SLF, WM70PLF, WM90SLF, WM90PLF, WM90S/P).
- Drivetrain Torque Transfer — A correctly fitted key ensures full torque is transferred from the shaft to the driven component; a worn or missing key causes slippage, uneven drum rotation, and accelerated wear on the shaft and hub.
- Authorized Multiquip Source — Sold by DHS Equipment, an authorized Multiquip dealer, guaranteeing part authenticity and correct part number fulfillment on every order.
A shaft key is a small but critical drivetrain component that sits in a machined slot — the keyway — between a rotating shaft and a mating hub, gear, or pulley. Its job is to lock the two parts together rotationally so that torque is transmitted evenly without slippage. In concrete and mortar mixer applications, the key keeps the drum drive assembly synchronized with the engine output shaft. When a key shears, deforms, or works loose, the driven component can spin independently of the shaft, resulting in loss of drum rotation, abnormal noise, and potential damage to the shaft or hub bore if operation continues.
Part Details
| Part Number | 505084 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | 1/4" x 55 MM Key |
Compatibility & Fitment
| Name | Model |
|---|---|
| Essick Mixers | EM90P/S |
| Essick Mixers | EM70P/S |
| Whiteman Mixers | WM63E |
| Whiteman Mixers | WM63H5 |
| Whiteman Mixers | WM63H8 |
| Whiteman Mixers | WM70S/P |
| Essick Mixers | EM70SLF |
| Essick Mixers | EM90SLF |
| Whiteman Mixers | WM63SLF |
| Whiteman Mixers | WM70SLF |
| Whiteman Mixers | WM70PLF |
| Whiteman Mixers | WM90SLF |
| Whiteman Mixers | WM90PLF |
| Whiteman Mixers | WM90S/P |
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.
