The GFR79 is a high-torque hydraulic planetary gearbox designed for heavy-duty power transmission applications. Its planetary reduction structure combines high torque capacity with a compact transmission arrangement for mobile and industrial equipment.
The GFR79 series is available in multiple configurations with different hydraulic motor options, reduction arrangements and output characteristics. It can be used in hydraulic winches, rotary drive systems, heavy-duty machinery and other equipment requiring controlled low-speed, high-torque transmission.
The GFR79 series is positioned as a high-torque planetary transmission solution for equipment that requires hydraulic drive, low output speed and substantial torque multiplication.
Hydraulic winches and pulling equipment
Heavy-duty industrial machinery
Mobile and specialized equipment
Rotary and positioning systems
High-torque hydraulic transmission applications
The planetary gear system is designed to transmit high torque through a compact multi-stage reduction arrangement.
The GFR79 can be paired with hydraulic motors according to the required displacement, input speed and operating conditions. The listed configurations use GN7-series hydraulic motors.
The specified GFR79 configurations are designed for low-speed output and high torque, making them suitable for heavy-duty pulling, lifting and rotary transmission applications.
Different displacement, torque and reduction configurations are available across the GFR79 series to match different machine requirements.
The listed configurations use the Z7 brake arrangement. Final brake selection should be confirmed according to the application and system requirements.
The following specifications are based on the GFR79 configurations provided on this page. Final operating parameters should be confirmed according to the selected hydraulic motor, pressure and application.
| Model | Total Displacement (ml/r) | Rated Torque (Nm) | Speed (r/min) | Overall Efficiency | Hydraulic Motor | Planetary Gearbox | Brake | |
|---|---|---|---|---|---|---|---|---|
| 16 MPa | 20 MPa | |||||||
| GFR79-60000 | 59,700 | 120,000 | 161,000 | 0-6 | 0.85-0.88 | GN7-3000 | C79-20 | Z7 |
| GFR79-66000 | 65,800 | 140,000 | 177,000 | 0-6 | 0.85-0.88 | GN7-3300 | C79-20 | Z7 |
| GFR79-72000 | 72,220 | 156,000 | 195,000 | 0-6 | 0.85-0.88 | GN7-3600 | C79-20 | Z7 |
| GFR79-84000 | 83,580 | 180,000 | - | 0-6 | 0.85-0.88 | GN7-3000 | C79-20 | Z7 |
| GFR79-86000 | 85,960 | 186,000 | - | 0-6 | 0.85-0.88 | GN7-4300 | C79-20 | Z7 |
The technical drawing provides the reference geometry for the GFR79 planetary gearbox. Please confirm the actual mounting dimensions and hydraulic interface before final selection.
Hydraulic power is supplied to the hydraulic motor and converted into rotary input torque. The planetary gear stages reduce input speed and increase output torque before transmitting power to the driven equipment.
The selected gear ratio, motor displacement and hydraulic pressure determine the final output speed and torque characteristics of the complete drive system.
Hydraulic Winches: High-torque reduction for winching, pulling and lifting systems.
Heavy-Duty Material Handling: Drive systems requiring controlled low-speed movement and high torque.
Industrial Machinery: Hydraulic power transmission for heavy-duty equipment.
Rotary Drive Systems: Low-speed rotational drive and positioning applications.
Mobile Equipment: Hydraulic transmission systems where compact packaging and high torque are required.
GFR79 configuration should be selected according to the required output torque, output speed, hydraulic pressure, motor displacement, reduction ratio, braking requirements and installation dimensions.
Required output torque
Required output speed
Hydraulic motor displacement
Operating pressure and flow
Mounting dimensions and shaft interface
Brake and holding requirements
High torque transmission capability
Compact planetary transmission design
Multiple hydraulic motor configurations
Multiple output torque configurations
Low-speed output for heavy-duty applications
Suitable for application-specific hydraulic systems
Payment: 30% deposit and 70% before shipment. T/T is generally accepted, with other payment terms subject to negotiation.
Delivery: Approximately 20-25 days after receipt of payment, subject to product configuration and order quantity.
Service: 24-hour online support and technical overseas service are available.
The GFR79 is a high-torque hydraulic planetary gearbox designed to reduce speed and increase torque in hydraulic transmission systems.
Typical applications include hydraulic winches, heavy-duty material handling systems, industrial machinery, rotary drive systems and specialized mobile equipment.
The listed configurations have an output speed range of 0-6 r/min. Actual operating speed depends on hydraulic motor displacement, flow rate and selected configuration.
Configuration can be selected according to output torque, motor displacement, reduction ratio, hydraulic system requirements, mounting interface and brake configuration.
The listed GFR79 configurations use GN7-series hydraulic motors, including GN7-3000, GN7-3300, GN7-3600 and GN7-4300.
The listed configurations use the C79-20 planetary gearbox arrangement.
The minimum order quantity is 1 set.
