Multiquip 25694 4-Speed Bladeshaft Gearbox Assembly

The Multiquip 25694 4-Speed Bladeshaft Gearbox Assembly is a genuine OEM component designed for SP4 flat saws and SP6457 pavement saws. As a direct OEM replacement, this assembly is manufactured to the same specifications as the original unit, ensuring a correct drop-in fit for SP4 and SP6457 machines. Sourced directly through authorized Multiquip channels, the part is the right part when your saw's gearbox needs to be replaced or rebuilt. DHS Equipment carries this assembly ready to ship to keep your saw back in service.

Key Features

• Complete Gear Assembly: — Supplied as a full 4-speed bladeshaft gearbox assembly, replacing the entire unit in a single service step rather than sourcing individual internal components.
• Genuine OEM Construction: — Manufactured to original Multiquip specifications, with matched gear ratios and shaft tolerances that an aftermarket substitute may not replicate.
• Confirmed Fitment: — Engineered specifically for SP4 flat saws and SP6457 pavement saws; verify your model before ordering to ensure direct compatibility.
• Maintains Blade Speed Accuracy: — A properly functioning bladeshaft gearbox delivers the correct blade RPM across all four speed settings; a worn or damaged unit causes erratic blade speed and uneven cut quality.
• Critical Drive Component: — The gearbox sits between the engine and the blade arbor, making its integrity essential to safe and consistent saw operation on pavement and flatcut applications.

The bladeshaft gearbox assembly transfers power from the saw's engine to the cutting blade, providing four selectable speed ratios that allow the operator to match blade RPM to the material being cut. By controlling the mechanical advantage between the engine output shaft and the blade arbor, the gearbox protects the blade and engine from overload while maintaining consistent cutting depth and speed. When the gearbox wears or fails, the saw may lose a speed range, produce excessive vibration, or deliver inconsistent blade rotation — all of which compromise cut quality and can accelerate blade wear.

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.