Multiquip EM955050 Mainshaft

The Multiquip EM955050 Mainshaft is a genuine OEM component designed for the FM9 finishing machine. As a factory-sourced replacement, this mainshaft is manufactured to the exact tolerances required for correct operation within the FM9 drivetrain. DHS Equipment supplies this part direct, so you can be confident you are getting the right component for your machine.

Key Features

• Genuine OEM Dimensional Accuracy — Machined to the precise diameter, length, and tolerance specifications required for correct load transfer and rotational alignment in the FM9 finishing machine.
• Direct Drivetrain Replacement — Drops into the existing shaft housing and bearing seats of the FM9, matching the original mounting configuration without improvisation.
• FM9 Finishing Machine Fitment — Confirmed fitment for the Multiquip FM9, ensuring this mainshaft matches the correct assembly for that model.
• Structural Integrity Under Load — A sound mainshaft maintains consistent power delivery from the engine through the drivetrain; a worn or bent shaft causes vibration, bearing failure, and loss of blade control.
• OEM Sourcing for Long Service Life — Genuine Multiquip parts are produced to the same material and heat-treatment standards as the original, supporting the expected service interval of the machine.

The mainshaft is the central rotating component of the finishing machine's drivetrain, transmitting torque from the power source through to the blade assembly. It runs through the machine's bearing housings and must maintain precise alignment to keep the trowel blades operating smoothly and evenly across the concrete surface. When a mainshaft becomes worn, bent, or damaged, operators will notice excessive vibration, uneven blade pitch, accelerated bearing wear, and ultimately a loss of finish quality — making prompt replacement critical to restoring full machine performance.

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.