Description
Overview:
The Spiral Bevel Gear for Makita GA9020 Angle Grinder is a genuine Makita replacement part designed to restore smooth drive in the grinder's gearbox. Machined from high‐quality steel for strength and wear resistance, it transfers torque from the motor to the output spindle, keeping grinding performance consistent under load. Supplied to Makita's original specification, it fits and runs precisely in the factory gearbox layout. Identified by Manufacturer Part Number 227490-4, it is suitable for the GA9020 and GA9020S, where it replaces a worn or damaged gear that can cause noise, vibration, or loss of power. Fitting this gear helps protect the gearbox, supports accurate disc speed, and extends the service life of your angle grinder when maintained with the correct grease.
Key Features:
- Genuine Makita part (MPN 227490-4) for assured fit and performance
- Precision steel construction for durability and consistent torque transfer
- Direct replacement that matches original tooth form and alignment
- Helps reduce gearbox noise and vibration when paired with a good pinion and bearings
- Supports reliable spindle speed for cleaner, more controlled grinding
- Designed for the GA9020 series for straightforward, like‐for‐like installation
- Compatible with standard workshop fitting procedures and appropriate gearbox grease
- Made to Makita quality standards for long service life in tough site conditions
Typical Applications:
Used to renew the drive in Makita angle grinders working on steel fabrication, construction, masonry cutting, site maintenance, and workshop grinding tasks. Ideal when the original gear shows tooth wear, chipping, excessive backlash, or noise. Restores efficient power transmission for heavy-duty grinding, cutting, bevelling, and surface preparation, helping keep downtime low and tool output consistent.
Also known as:
Spiral gear, ring gear, crown gear, drive gear, output gear, final drive gear, angle grinder gearbox gear, bevel ring gear. These names refer to the same gearbox component that meshes with the pinion to turn the grinder's spindle.
Fits Models:
GA9020, GA9020S, GA9040S
