Multiquip EM111 Support Block Assembly Pulley and Pin

The Multiquip EM111 Support Block Assembly Pulley and Pin is a genuine OEM component designed for a broad range of Multiquip and Whiteman power trowels, concrete vibrators, rollers, saws, and related equipment. This assembly serves as a direct OEM replacement sourced from Multiquip, ensuring it meets the exact specifications of the original part. Confirmed fitment spans ride-on trowel families including HTX44, STX55, STX6H, HTX6H, LD6, PRX, and MD-series machines, as well as walk-behind trowel models such as the B46, HDA-Series, and J36-M30 Series, among many others. With such wide cross-model coverage, EM111 is a high-utility stocking part for shops and contractors running mixed Multiquip fleets.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original design tolerances, so the pulley and pin geometry match the mating components exactly as engineered.
• Drop-In Installation — Matches the original mounting points and pin dimensions, allowing straightforward installation without machining or modification.
• Broad Fleet Coverage — Fits ride-on trowel families HTX44, STX55, LD6, PRX, and MD-series, plus walk-behind models, vibrators, rollers, and saws across the Multiquip and Whiteman portfolio.
• Sustained Drive System Performance — A correctly seated support block keeps the pulley aligned and the pin secure, maintaining consistent power transmission and preventing premature belt or drive wear.
• High-Volume Stocking Part — Wide cross-model applicability makes EM111 a smart inventory choice for dealers and rental houses servicing multiple Multiquip machine types.

The support block assembly houses the pulley and retaining pin that anchor a rotating or tensioning element within the machine's drive system. Its role is to hold the pulley in precise alignment so that belts, cables, or drive components track correctly under load. When the support block cracks, the pin wears, or the pulley shifts out of alignment, the drive system loses efficiency — leading to uneven blade speed on trowels, erratic vibration output on vibrators, or accelerated wear on adjacent drive components. Replacing a worn EM111 assembly restores correct geometry to the drive path and protects the surrounding components from secondary damage.

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.