China Best Sales Gfr Series 4-4400 Planetary Gearbox comer gearbox

Product Description

Product Description

Model: GFR Series
Ratio: 5-28
Output Torque: N.m


HYDRAULIC GFT is an ideal driving component for wheel or track driving vehicles, and other moving equipment and widely applied in excavator, speading machine, drill machine, mobile crusher, engineering machiner, mining, tunnel machiner, agricultural machiner,etc. It is an ideal replacement of CZPT products. 

400 series hydraulic transmission can endure the large outside radial and axial forces. It features for high torque, high starting efficiency, low speed stability and low noisy operating. Thus it is widely used in construction machinery, railway, ship, petroleum, mining and metallurgy equipments.

1. One-or two-stage planetary gearboxes, smooth operation and reasonable structure.
2. Small volume, compact structure and high transmission efficiency.
3. Radial piston hydraulic motor with long life operating.
4. Mounting dimension is available on request.
5. Brake, balance valve, shuttle valve and the distributor which can integrate all kinds of function valve are also available on request.

Product Specification

Model Total displacement 
Rated torque Speed
Total Efficiency Hydraulic Motor Planetary
GFR2.5-850 830 2350 0-100 0.88-0.9 GM05-170 C2.5-5 Z2.5
GFR2.5-950 955 2706 0-100 0.88-0.9 GM05-200 C2.5-5 Z2.5
GFR2.5-1050 1050.5 2976 0-100 0.88-0.9 GM05-200 C2.5-5.5 Z2.5
GFR3-1450 1450 4571 0-90 0.88-0.9 GM1-300 C3-5 Z3
GFT3-1700 1735 4823 0-90 0.88-0.9 GM2-350 C3-5 Z3
GFR3-1900 1908 5306 0-80 0.88-0.9 GM2-350 C3-5.5 Z3
GFR3-2300 2338 6492 0-75 0.88-0.9 GM2-420 C3-5.5 Z3
GFR4-3000 2975 8398 0-80 0.9-0.91 GM3-600 C4-5 Z4
GFR4-4000 3960 11222 0-80 0.9-0.91 GM3-800 C4-5 Z4
GFR4-4400 4356 12344 0-70 0.9-0.91 GM3-800 C4-5.5 Z4
GFR5-5700 5714 16056 0-65 0.9-0.91 GM5-1000 C5-5.5 Z5
GFR5-6700 6700 18915 0-70 0.9-0.91 GM5-1300 C5-5 Z5
GFR5-8150 8170 22987 0-70 0.9-0.91 GM5-1600 C5-5 Z5
GFR5-9000 9080 25612 0-70 0.9-0.91 GM5-1800 C5-5 Z5
GFR5-11000 11039 31159 0-50 0.9-0.91 GM5-2000 C5-5.5 Z5
GFR6-12500 12565 35476 0-40 0.9-0.91 GM6-2500 C6-5 Z6
GFR6-15200 15205 42987 0-40 0.9-0.91 GM6-3000 C6-5 Z6
GFR6-16500 16725 47286 0-30 0.9-0.91 GM6-3000 C6-5.5 Z6
GFR6-20000 19860 57141 0-30 0.9-0.91 GM6-3600 C6-5.5 Z6
GFR7-21500 21490 61902 0-35 0.9-0.91 GM7-4300 C7-5 Z7
GFR7-23650 23639 68092 0-30 0.9-0.91 GM7-4300 C7-5.5 Z7
GFR9-33000 33180 92928 0-15 0.9-0.91 GM9-6600 C9-5.0 Z9
GFR9-38500 38480 107800 0-15 0.9-0.91 GM9-7700 C9-5.0 Z9
GFR9-48400 48598 / 0-15 0.9-0.91 GM9-8800 C9-5.5 Z9
GFR9-66000 66143 / 0-15 0.9-0.91 GM9-12000 C9-5.5 Z9

Application: Machinery, Agricultural Machinery
Function: Speed Changing, Speed Reduction
Layout: Three-Ring
Hardness: Hardened Tooth Surface
Installation: Torque Arm Type
Step: Three-Step


Customized Request

planetary gearbox

Concept of Coaxial and Parallel Shaft Arrangements in Planetary Gearboxes

In planetary gearboxes, the arrangement of shafts plays a crucial role in determining the gearbox’s overall structure and functionality. The two common shaft arrangements are coaxial and parallel configurations:

Coaxial Shaft Arrangement: In a coaxial arrangement, the input shaft and output shaft are positioned along the same axis, resulting in a compact and streamlined design. The planetary gears and other components are aligned concentrically around the central axis, allowing for efficient power transmission and reduced space requirements. Coaxial planetary gearboxes are commonly used in applications where space is limited, and a compact form factor is essential. They are often employed in robotics, automotive systems, and aerospace mechanisms.

Parallel Shaft Arrangement: In a parallel arrangement, the input and output shafts are positioned parallel to each other but on different axes. The planetary gears are aligned in a way that allows the power to be transmitted from the input shaft to the output shaft via a combination of meshing gears. This arrangement allows for a larger gear diameter and higher torque transmission capabilities. Parallel planetary gearboxes are often used in applications requiring high torque and heavy-duty performance, such as industrial machinery, construction equipment, and material handling systems.

The choice between coaxial and parallel shaft arrangements depends on the specific requirements of the application. Coaxial configurations are favored for compactness and efficient power transmission, while parallel configurations excel in handling higher torque and heavy loads. Both arrangements offer distinct advantages and are chosen based on factors like available space, torque demands, load characteristics, and overall system design.

planetary gearbox

The Role of Lubrication and Cooling in Maintaining Planetary Gearbox Performance

Lubrication and cooling are essential factors in ensuring the optimal performance and longevity of planetary gearboxes. Here’s how they play a crucial role:

Lubrication: Proper lubrication is vital for reducing friction and wear between gear teeth and other moving components within the gearbox. It forms a protective layer that prevents metal-to-metal contact and minimizes heat generation. The lubricant also helps dissipate heat and contaminants, ensuring a smoother and quieter operation.

Using the right type of lubricant and maintaining the proper lubrication level are essential. Over time, lubricants may degrade due to factors like temperature, load, and operating conditions. Regular lubricant analysis and replacement help maintain optimal gearbox performance.

Cooling: Planetary gearboxes can generate significant heat during operation due to friction and power transmission. Excessive heat can lead to lubricant breakdown, reduced efficiency, and premature wear. Cooling mechanisms, such as cooling fans, fins, or external cooling systems, help dissipate heat and maintain a stable operating temperature.

Efficient cooling prevents overheating and ensures consistent lubricant properties, extending the life of the gearbox components. It’s particularly important in applications with high-speed or high-torque requirements.

Overall, proper lubrication and cooling practices are essential to prevent excessive wear, maintain efficient power transmission, and prolong the service life of planetary gearboxes. Regular maintenance and monitoring of lubrication quality and cooling effectiveness are key to ensuring the continued performance of these gearboxes.

planetary gearbox

Role of Sun, Planet, and Ring Gears in Planetary Gearboxes

The arrangement of sun, planet, and ring gears is a fundamental aspect of planetary gearboxes and significantly contributes to their performance. Each gear type plays a specific role in the gearbox’s operation:

  • Sun Gear: The sun gear is located at the center and is driven by the input power source. It transmits torque to the planet gears, causing them to orbit around it. The sun gear’s size and rotation speed affect the overall gear ratio of the system.
  • Planet Gears: Planet gears are smaller gears that surround the sun gear. They are held in place by the planet carrier and mesh with both the sun gear and the internal teeth of the ring gear. As the sun gear rotates, the planet gears revolve around it, engaging with both the sun and ring gears simultaneously. This arrangement multiplies torque and changes the direction of rotation.
  • Ring Gear (Annulus Gear): The ring gear is the outermost gear with internal teeth that mesh with the planet gears’ external teeth. It remains stationary or acts as the output shaft. The interaction between the planet gears and the ring gear causes the planet gears to rotate on their own axes as they orbit the sun gear.

The arrangement of these gears allows for various gear reduction ratios and torque multiplication effects, making planetary gearboxes versatile and efficient for a wide range of applications. The combination of multiple gear engagements and interactions distributes the load across multiple gear teeth, resulting in higher torque capacity, smoother operation, and lower stress on individual gear teeth.

Planetary gearboxes offer advantages such as compact size, high torque density, and the ability to achieve multiple gear reduction stages within a single unit. The arrangement of the sun, planet, and ring gears is essential for achieving these benefits while maintaining efficiency and reliability in various mechanical systems.

China Best Sales Gfr Series 4-4400 Planetary Gearbox   comer gearbox	China Best Sales Gfr Series 4-4400 Planetary Gearbox   comer gearbox
editor by CX 2023-10-23