The Multiquip EM502226 Pinion Shaft is a genuine OEM component designed for Essick and Whiteman plaster and mortar mixer models, including EM90P/S, EM70P/S, WM63E, WM63H5, WM63H8, and WM63SLF. As a direct OEM replacement, this pinion shaft is manufactured to the same specifications as the original part, ensuring a proper fit within the mixer's gear drive assembly. DHS Equipment stocks this part to help keep your mixer operating at full capacity with no compatibility concerns. Verify your model code before ordering to confirm this is the correct shaft for your machine.
Key Features
- Genuine OEM Gear Integrity — Manufactured to the original tooth profile and dimensional tolerances required for smooth, low-wear mesh with the ring gear in the mixer drivetrain.
- Direct Drivetrain Replacement — Drops into the existing gear housing mounting position on supported models, maintaining proper gear engagement depth and backlash without additional machining.
- Broad Mixer Compatibility — Fits Essick mixer models EM90P/S and EM70P/S, as well as Whiteman mixer models WM63E, WM63H5, WM63H8, and WM63SLF.
- Sustained Drum Rotation Under Load — A correctly dimensioned pinion shaft transfers engine torque to the drum efficiently; a worn or damaged shaft causes gear slip, erratic drum speed, and accelerated wear across the entire gear train.
- OEM Verified Part Number — Part number EM502226 matches Multiquip's current OEM parts documentation for the listed Essick and Whiteman mixer families, giving you confidence you are ordering the right component.
The pinion shaft is a core element of the mixer's mechanical gear drive, transmitting rotational force from the engine or motor through the gear train to turn the mixing drum. It meshes directly with the ring gear mounted on the drum, and the precision of that mesh determines how smoothly and consistently the drum rotates under the resistance of mortar, plaster, or concrete. When a pinion shaft wears, develops surface damage on the gear teeth, or fails outright, the result is typically noisy operation, uneven drum rotation, or complete loss of drive — all of which interrupt the mixing cycle and can cause further damage to surrounding gear components if not addressed promptly.
Part Details
| Part Number | EM502226 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Pinion Shaft |
Compatibility & Fitment
| Name | Model |
|---|---|
| Essick Mixers | EM90P/S |
| Essick Mixers | EM70P/S |
| Whiteman Mixers | WM63E |
| Whiteman Mixers | WM63H5 |
| Whiteman Mixers | WM63H8 |
| Whiteman Mixers | WM63SLF |
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.
