Gearbox & Speed Reducer

Gearbox & Speed Reducer

Gearboxes turn speed into torque and send power right where it’s needed. They’re mechanical units with internal gear sets that transfer power, and can adjust speed, change direction, or boost torque. Speed reducers (or gear reducers) are a type of gearbox designed to reduce rotational speed while increasing torque. FridyParts has a full range of gearboxes and speed reducers in stock, getting your machinery back up and running with little downtime.

Types of Gearboxes and Speed Reducers

Picking the right gearbox starts with knowing the different types. We’ve got the options you need for your specific job.

• Worm Gear Speed Reducers: Perfect for tight spaces that need a big speed reduction ratio. They’re widely used on conveyors, material handling gear, and industrial machines, and most have a self-locking design to stop back-driving.
• Right-Angle Gearboxes: These shift power transmission direction by 90 degrees—total must-haves for mower decks, fertilizer spreaders, and other equipment where the input power source isn’t aligned with the output.
• Planetary Gearboxes: Tough, high torque density, with coaxial input and output shafts. They’re a staple in the final drives of heavy mobile gear like excavators, compactors, and loaders—where you need serious torque to move the machine.
• Transmission & Drivetrain Parts: This range includes full transmissions, valve bodies, bell housings, and differentials. These complex gear systems are critical for vehicles and heavy equipment, handling gear shifts and sending power to the wheels.
• Steering Gearboxes: Specialized gearboxes that turn your steering wheel’s rotational motion into the linear motion needed to steer the wheels. We stock manual and power steering gearbox assemblies for all kinds of vehicles.
• Marine Lower Units: Also called gearcases, these are sealed, heavy-duty gearboxes for outboard motors. They transfer power from the engine’s vertical driveshaft to the horizontal propeller shaft and are built to stand up to harsh marine conditions.

Key Selection Considerations

To get the right part and avoid installation problems, keep these key points in mind before you order:

• Part number & machine compatibility: The surest way to find a direct replacement is to match the OEM part number. Always double-check your equipment’s brand, model, and production year.
• Gear ratio: For speed reducers and most gearboxes, the gear ratio (e.g,. 10:1, 60:1) is crucial. It dictates the input speed (from motor/engine) vs. output speed and torque.
• Shaft specs & size: Pay close attention to input and output shaft details—including diameter, length, and type (e.g, keyed, splined). A wrong shaft setup means the gearbox won’t connect to your motor or machinery at all.
• Load & application needs: Make sure the gearbox is rated for your application’s required horsepower (HP) and torque. A light-duty gearbox for power tools can’t handle the heavy stress of a rotary cutter or industrial compactor.
• Mounting & physical dimensions: Check the mounting pattern, frame size (e.g., 56C), and overall measurements to confirm the new gearbox fits perfectly in the old one’s space.

We’ve got a full range of gearboxes to meet all your equipment needs, like excavators, combine harvesters, tractors, forklifts, boom lifts, golf carts, ATVs, and more. We also carry all the speed reducers you need for transmission. Our strict quality promise means every part meets OEM specs, getting your equipment running like new again.