Multiquip 21764 Worm Counter Shaft Left Side

The Multiquip 21764 Worm Counter Shaft Left Side is a genuine OEM component designed for the JTNS20 and JTNSW20 international ride-on power trowels. Sourced directly from Multiquip, this part meets the exact engineering specifications of the original component it replaces. As a genuine OEM part, it delivers the dimensional accuracy and material integrity required to keep your trowel operating at full capacity. Confirmed fitment for JTNS20 and JTNSW20 models makes part number 21764 a straightforward service solution.

Key Features

• Genuine OEM Shaft Integrity — Manufactured to the exact material hardness and dimensional tolerances required for worm drive operation in ride-on trowel gearboxes.
• Left-Side Specific — Engineered as a direct left-side counterpart within the worm drive assembly, ensuring correct mesh alignment and load distribution upon installation.
• Confirmed Fitment — Compatible with JTNS20 and JTNSW20 international ride-on power trowels; cross-reference part number 21764 before ordering.
• Sustained Blade Speed Control — A correctly functioning worm counter shaft maintains consistent rotational transfer to the trowel blades, preserving surface finish quality across the full pass.
• Drive System Protection — Replacing a worn or damaged shaft before failure prevents accelerated wear on mating gears and related drive components within the assembly.

The worm counter shaft is a core element of the trowel's blade drive gearbox, transmitting rotational force from the worm gear to the output side of the drivetrain. On the left side of the machine, this shaft works in tandem with its right-side counterpart to deliver balanced torque to the finishing blades. When this shaft wears, develops surface damage, or fails, blade rotation becomes inconsistent or stops entirely — resulting in poor surface finish and potential damage to surrounding drive components.

For fitment questions or help confirming compatibility with your machine, 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.