The Multiquip 11778 Spider Plate Only is a genuine OEM component designed for HDA-Series walk-behind power trowels. As a direct OEM replacement, it meets the original design specifications set for Whiteman HDA-Series machines, ensuring the blade pitch assembly operates exactly as intended. This part is sold as the spider plate only — confirm your assembly requirements before ordering. If you're servicing an HDA-Series trowel and need the spider plate restored to original condition, the part is the correct OEM choice.
Key Features
- Genuine OEM Construction — Manufactured to the original design specification for the spider plate, ensuring correct geometry for consistent blade pitch adjustment across all float arms.
- Direct HDA-Series Fitment — Engineered specifically for Whiteman HDA-Series walk-behind power trowels; installs into the existing pitch control assembly without modification.
- Restores Blade Pitch Control — A worn or damaged spider plate causes uneven blade angle across the trowel head, leading to inconsistent surface finish and operator frustration on concrete flatwork.
- Heavy-Duty Application Ready — The HDA designation indicates heavy-duty use; this OEM spider plate is built to handle the demanding cycles of high-production concrete finishing work.
- Sold as Spider Plate Only — Part 11778 covers the spider plate component specifically, giving you the ability to replace only the worn item rather than the entire pitch assembly.
The spider plate is a central mechanical component in a walk-behind power trowel's blade pitch control system. It connects the pitch adjustment mechanism to the individual float arms, translating operator input into consistent blade angle across the entire trowel head. When the spider plate becomes worn, cracked, or damaged, blade pitch becomes uneven or unresponsive — resulting in poor surface finish, increased operator effort, and potential damage to the concrete surface. Replacing it promptly with a correct OEM part restores full pitch control and keeps the trowel performing to spec.
Part Details
| Part Number | 11778 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Spider Plate Only |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
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.
