Multiquip 21307 Spindle 3/4" Bore

The Multiquip 21307 is a genuine OEM Spindle 3/4" Bore designed for Multiquip and Whiteman walk-behind and ride-on power trowel models including the JS36H55, JS36H90, CS24H55E, J36-M30, J36-M30 Series, and J3036H55. As a factory-sourced component, 21307 ensures the trowel blade spider and float arms are supported with the correct shaft geometry and bore tolerance for these machines. Verify your model code against your serial plate before ordering to confirm this is the right spindle for your trowel.

Key Features

• Genuine OEM Tolerancing — Manufactured to Multiquip's exact bore and shaft specifications, ensuring the 3/4" bore seats correctly without play or misalignment in the trowel head.
• Direct-Fit Installation — Mounts directly into compatible trowel spider assemblies on J Series and C Series machines, matching the original bolt pattern and bearing seat dimensions.
• Broad Trowel Family Coverage — Fits JS36H55, JS36H90, CS24H55E, J36-M30, J36-M30 Series, J3036H55, and J Series China international walk-behind and ride-on power trowel models.
• Blade Control Integrity — A correctly functioning spindle maintains consistent blade pitch response; a worn or damaged spindle causes blade flutter, uneven float patterns, and accelerated wear on surrounding components.
• Sourced from the OEM — Part number 21307 is a genuine Multiquip part, not a substitute, so you get the same component that left the factory on new machines.

The spindle is the central rotating shaft in a power trowel's rotor head, supporting the pitch-adjusting mechanism that controls blade angle during floating and finishing passes. It transfers rotational force while allowing the operator to change blade pitch, making its bore diameter and surface finish critical to smooth, responsive blade adjustment. When a spindle wears, develops scoring, or loses concentricity, blade pitch becomes inconsistent and the trowel leaves uneven surface marks — often the first sign that the spindle needs replacement.

Need help confirming fitment for your trowel? Contact the DHS Equipment parts team with your model and serial number and we will make sure 21307 is the correct spindle for your machine.

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.