Products Description
CG430/CG520 Brush Cutter Gear Box – Direct Replacement Angle Drive Unit
Precision Gearbox for 43–52cc Brushcutters
This gearbox is a direct replacement for the angle drive unit on CG430, CG520, and compatible 43–52cc brushcutters. The gearbox transfers power from the drive shaft to the cutting head, using bevel gears to reduce speed while increasing torque for efficient cutting performance . Over time, gearboxes can suffer from worn gears, damaged bearings, or seal failure, leading to noisy operation, vibration, or complete loss of drive. This replacement unit restores full cutting function for professional landscaping and grounds maintenance applications.
Technical Profiles & Materials
OEM-Spec Replacement Fitment – Designed to meet original equipment specifications for CG430, CG520, and compatible 43–52cc brushcutters . Replaces the factory angle drive unit on machines with 1E40F-5 and 1E44F-5 engine platforms .
Precision 26mm/28mm x 7T/9T Specification – Available in 26mm or 28mm drive tube diameters with 7T or 9T spline configurations . The spline count must match your existing gearbox for proper engagement with the drive shaft .
Durable Metal Construction – Manufactured from robust aluminum alloy or steel, designed to withstand high torque, vibration, and impact stresses in demanding professional use . The housing provides excellent wear resistance and long service life.
Complete Assembly – Supplied as a complete gearbox unit ready for installation. Includes the internal bevel gears, bearings, and seals . Some listings include the output shaft nut and mounting hardware.
Broad Model Compatibility – Fits a wide range of 43cc and 52cc brushcutters, including:
CG Series: CG430, CG520
Other Models: BC430, BC520, 40-5, 44-5, TL43, TL52
Engines: 1E40F-5 (43cc), 1E44F-5 (52cc)
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Drive Tube Diameter | 26mm or 28mm |
| 2 | Spline Count | 7T or 9T |
| 3 | Compatible Engines | 43cc (1E40F-5), 52cc (1E44F-5) |
| 4 | Engine Displacement | 42.7cc – 51.7cc |
| 5 | Engine Power | 1.25kW – 1.47kW @ 6500–8500 RPM |
| 6 | Material | Aluminum alloy / Steel |
| 7 | Compatible Models | CG430, CG520, BC430, BC520, 40-5, 44-5, TL43, TL52 |
| 8 | Unit of Sale | 1 complete gearbox assembly |
Products Application
Brushcutter Gearbox Replacement
Direct replacement when the original gearbox becomes worn, noisy, or fails to transfer power. Common symptoms include grinding noises, excessive vibration, or the cutting head not rotating . This gearbox restores full cutting function .
Professional Landscaping & Grounds Maintenance
For contractors and grounds maintenance crews operating CG430/CG520 brushcutters, keeping a replacement gearbox on hand minimizes downtime. The pre-assembled unit allows for quick field replacement .
Workshop & Repair Service
For repair centres servicing Chinese brushcutters, this gearbox simplifies repairs by providing a complete drop-in replacement . Available in multiple configurations to suit different model requirements .
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
Trusted Partnership Power
YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process
Quality control
Expo experience
Customer Reviews
FAQ
Q: How do I confirm which gearbox fits my brushcutter?
A:Check your machine model number and measure the drive tube diameter (26mm or 28mm) . Count the splines on your existing gearbox (7T or 9T) . Select the matching configuration .
Q: What is the difference between 7T and 9T gearboxes?
A: The "T" refers to the number of splines on the internal drive shaft . Different models require different spline counts – always match your existing gearbox configuration .
Q: Is the gearbox supplied as a complete assembly?
A: Yes, the gearbox is supplied as a complete angle drive unit, ready for installation . Check the specific listing for included hardware .
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