Multiquip 22578 Spider Plate 6 Blade Taper Eaton Service Kit

The Multiquip 22578 Spider Plate 6 Blade Taper Eaton Service Kit is a genuine OEM component designed for the STX55J6 and STX55Y6 hydrostatic ride-on power trowels. As a direct OEM replacement, 22578 is built to the same specifications as the original part, ensuring a correct fit within the trowel's blade pitch control system. This service kit is the manufacturer-recommended solution for restoring the spider plate assembly on these STX55 series machines. Sourced directly through Multiquip's authorized parts channel, you can trust part number 22578 delivers the fit and function your machine requires.

Key Features

• Genuine OEM Spider Plate Assembly: — Manufactured to original Multiquip specifications, maintaining the correct blade pitch geometry critical to smooth, consistent concrete finishing.
• Eaton-Sourced Service Kit: — Includes the Eaton-matched components required to properly rebuild the spider plate assembly, so you're not improvising with mismatched hardware.
• 6-Blade Taper Configuration: — Matched specifically to the 6-blade taper setup on STX55 series trowels, ensuring proper blade angle engagement without reworking the mounting interface.
• STX55 Series Fitment: — Confirmed fit for STX55J6 and STX55Y6 Whiteman hydrostatic ride-on power trowels — verify your model code before ordering.
• Restores Blade Pitch Control Performance: — A worn or damaged spider plate causes uneven blade angle across the rotor, leading to inconsistent surface finishing and increased operator fatigue. This kit brings the assembly back to spec.
• Hydraulic System Compatibility: — Designed to work correctly within the hydrostatic blade pitch control system of the STX55 platform, where incorrect components can affect both finishing quality and operator control.

The spider plate is a central component of a ride-on trowel's blade pitch control system. It translates input from the pitch control mechanism into uniform angular movement across all six finishing blades simultaneously — when it's working correctly, every blade lifts and drops in sync, producing a flat, even finish. As the spider plate or its associated taper interface wears, blade angles become inconsistent, which shows up immediately in the quality of the concrete surface and can place additional stress on the hydraulic control system. Replacing the assembly with the correct OEM service kit restores the precise mechanical relationship between the control system and the blades.

For fitment questions or to confirm part 22578 is correct for your specific STX55J6 or STX55Y6 serial range, contact the DHS Equipment parts team directly.

Part Details

Compatibility & Fitment

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.