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GTM is a professional manufacturer of agricultural PTO gearboxes designed for reliable power transmission in various types of farm machinery. Our gearboxes are engineered for superior performance, long service life, and easy maintenance — ensuring your agricultural operations run smoothly and efficiently.
We supply high-quality Rotary Cutter Gearboxes, Rotary Tiller Gearboxes, and Grain Transportation Gearboxes that fit a wide range of tractors and implements.
Our Agricultural PTO Gearboxes are built to handle demanding workloads in the field. With optimized gear ratios, heat-treated shafts, and precision-machined housings, these gearboxes deliver stable torque output and high transmission efficiency.
Power Range: 15 HP – 120 HP
Input Speed: 540 RPM / 1000 RPM
Gear Ratio Options: 1:1.46, 1:1.93, 1:2.92, or customized
Output Torque: up to 900 N·m
Mounting Type: Flange / Foot / Shaft Mounted
Shaft Diameter: 25 mm – 45 mm
Housing Material: High-strength cast iron or aluminum alloy
Gear Material: Hardened 20CrMnTi alloy steel
Lubrication: Oil bath with synthetic gear oil
Noise Level: ≤ 80 dB
High Torque Output — Precision-ground gears ensure smooth and powerful transmission.
Long Service Life — Heat-treated alloy steel components resist wear and fatigue.
Easy Maintenance — Simple oil replacement and accessible inspection ports.
Universal PTO Compatibility — Fits standard tractor PTO shafts (1-3/8" Z6 or Z21).
Custom Gear Ratio Options — Meet specific agricultural implement requirements.
Corrosion-Resistant Coating — Ideal for harsh outdoor conditions.
| Gearbox Type | Typical Application | Power Range | Output Shaft | Ratio Options |
|---|---|---|---|---|
| Rotary Cutter Gearbox | Rotary mower, slasher | 30–100 HP | 1 3/8” | 1:1.47 / 1:1.93 |
| Rotary Tiller Gearbox | Rotary cultivator, tiller | 20–80 HP | 1 3/8” | 1:2.07 / 1:3.0 |
| Grain Transportation Gearbox | Auger, grain conveyor | 15–60 HP | 35 mm | 1:1 / 1:2 |
| Custom Agricultural Gearbox | Fertilizer spreader, sprayer, mixer | 15–120 HP | Custom | Custom |
Gears: Hardened and precision-ground 20CrMnTi for excellent load capacity.
Bearings: Heavy-duty tapered roller bearings for long-lasting stability.
Seals: Double-lip oil seals prevent leakage and dust contamination.
Housing: Rigid cast iron for vibration resistance and durability.
Surface Treatment: Anti-rust coating + powder paint for outdoor longevity.
Our Agricultural PTO Gearboxes are widely used in:
Rotary Mowers and Slashers for pasture management
Rotary Tillers for soil preparation
Grain Augers and Conveyors for crop transport
Fertilizer Spreaders and Mixers for precision farming
Irrigation Pumps for large-scale agriculture
"We replaced our old rotary tiller gearbox with GTM’s model last season. Tilling 200 acres daily, it handled rocky soil without breakdowns – cut maintenance time by 40%." – John D., Illinois
"Our grain carts now run 12-hour shifts during harvest with GTM’s transport gearboxes. Zero jams, consistent speed – increased daily grain movement by 15 tons." – Maria S., Mato Grosso
"The rotary cutter gearbox stands up to our harsh outback conditions. Dust, heat, and thick scrub – it’s lasted 3 seasons with no major issues. Worth every penny." – David L., Queensland
5000+ units sold annually in 30+ countries
In-house R&D team with 10+ agricultural engineers
24/7 technical support via phone/email
Fast delivery: 2-3 weeks for custom orders
Free replacement parts for warranty claims
Looking for a reliable Agricultural PTO Gearbox for your farm equipment or OEM production line?
GTM offers standard and custom gearbox solutions tailored to your application.
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