The Rotary Cutter Gearbox for the agricultural industry is a power transmission unit designed specifically for agricultural machinery, mainly used to drive rotary knives for efficient cutting operations (e.g. grass cutting, straw crushing, brush clearing, etc.). Its core function is to convert the power from the tractor or other power sources into high torque, stable speed mechanical energy suitable for agricultural cutting, while adapting to the complex field environment.

Functions of GTM Rotary Cutter Gearbox

1. Power transmission and speed regulation

Through the gear set to convert the high speed (usually 540/1000 RPM) of the tractor power output shaft (PTO) into low speed and high torque suitable for cutting, to ensure that the tool maintains stable power when the load is changing (e.g. cutting thick straw, weeds).

It supports multi-speed regulation to suit different crop densities or terrains (e.g. steep slopes, wetlands).

2. Durability and protection

Made of high-strength cast iron or alloy steel with anti-rust surface treatment, resistant to corrosion by mud, water, gravel and plant sap in the field.

Sealed design prevents dust and debris from intruding into the gearbox (e.g. IP67 level protection), prolonging the life of bearings and gears.

3. Safety protection mechanism

Integrated overload clutch or shear bolt cuts off power in case of tool jamming to prevent gearbox damage.

Some models are equipped with shock absorbers to reduce the impact on the mechanical structure during operation.

Application of GTM Rotary Cutter Gearbox in Agricultural Scenarios

1. Grass cutting and straw crushing

Drive the rotary blade to cut grass, straw or cover crops (e.g. cornstalks), the blade speed can be adjusted to control the size of crushing (coarse crushing to return to the field or fine crushing to feed).

2. Shrub and bramble clearing

For cutting brush at the edge of orchards and woodlands, the gearbox provides high torque to cope with hard woody stalks.

3. Farmland preparation and stubble treatment

Combined with the disc knife or dumping knife, it can quickly clean up field stubble (such as rice stubble, wheat stubble) in preparation for planting or plowing.

4. Orchard and vineyard management

The low profile gear box design is suitable for orchard machinery, and it can complete the cutting of weeds between rows in a narrow space.

Design of GTM Rotary Cutter Gearbox

1. PTO Drive Adaptation

Directly connects to tractor power output shaft, supports standard speed (540/1000 RPM) and quick-change couplings for quick installation and removal.

2. Modular blade set

Gearbox output shaft can be adapted to different knives (such as Y-type knives, hammer blade knives), through the replacement of blades to achieve multi-functional operations (cutting, crushing, spreading).

3. Terrain adaptability

The floating gearbox design allows the cutter to adjust its height automatically with the undulation of the ground, avoiding knives colliding with hard objects (e.g. stones).

4. Maintenance Convenience

The oil filling hole and oil drain valve are external, which is convenient for lubrication and maintenance in the field; some models support maintenance-free bearings.

Commonly used equipment

Forage cutting and sunning machine: Gear box drives multiple knives, cutting and spreading forage grass synchronously.

Straw Returner: High-torque gear box drives heavy-duty hammer blades, crushing corn stalks and returning them directly to the field.

Multi-functional brushcutter: Switching blade modes through the gearbox, combining weed cutting and brush clearing.