The Multiquip 507417 Moveable Grate is a genuine OEM replacement designed for WM90 and EM90 series plaster and mortar mixers, including Whiteman and Essick models. Sourced directly from Multiquip, this part matches the original specification and installs as a direct drop-in replacement with no modification to the mixer drum assembly. Compatible across a wide range of WM90 and EM90 configurations — including LF, H8, S, P, and E suffix variants — the part is the correct part for both steel and polyurethane drum models in this family.
Key Features
- Genuine OEM Construction — Manufactured to the same material and dimensional standards as the original grate, ensuring consistent screening performance across every batch.
- Direct Drop-In Replacement — Engineered to the original mounting geometry of the WM90 and EM90 drum opening, so the grate seats and pivots correctly without any reworking of surrounding components.
- Broad Mixer Compatibility — Fits WM90PLF, WM90S/P, WM90SLF, EM90SH8, EM90PH8, EM90SE, EM90PE, WM90SH8, WM90PH8, WM90SE, WM90PE, and related WM90 and EM90 configurations.
- Consistent Material Screening — A properly functioning moveable grate controls what enters the drum, preventing oversized aggregate or debris from reaching the mixing paddles and damaging the drivetrain.
- Covers Whiteman and Essick Platforms — A single part number spans both the Whiteman (WM90) and Essick (EM90) mixer lines, making it straightforward to stock for fleets running both brands.
The moveable grate sits over the drum opening of the mixer and acts as a filter between the operator loading material and the mixing chamber below. It allows properly sized aggregate, sand, and cement to pass through while blocking oversized stones or foreign debris that could damage the paddles or drum lining. When the grate becomes bent, cracked, or broken, material control is lost — which can accelerate wear on internal mixer components and affect the consistency of the mixed batch. Replacing a worn or damaged grate promptly keeps the mixing process controlled and protects the rest of the drum assembly.
For fitment questions or help confirming this part is correct for your specific mixer serial number, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 507417 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Moveable Grate |
Compatibility & Fitment
| Name | Models |
|---|---|
| Essick Mixers | EM90P/S |
| ESSICK Plaster-Mortar Mixers | EM90PE, EM90PH8, EM90SE, EM90SH8 |
| Mixers | EM-90P, EM-90S, EM-900P, EM-900S, WM-90P, WM-90S, WM-900P, WM-900S, WM90PE, WM90PH8, WM90PLF, WM90S/P, WM90SE, WM90SH8, WM90SLF |
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.
