Planetary Gear Drive
Drive type: speed reducer
Result torque: 33,895 Nm (25,000 lb-ft)
Max input speed: 2800 rpm
Variety of input options
Straight in for an on centerline adaptation giving a symmetrical clearance about the hydraulic motor input
Offset straight in enables the hydraulic electric motor be mounted off center
Right angle input movements the hydraulic electric motor perpendicular to the centerline of the planetary drive for added clearance between elements on track drives
Output options
With external shaft includes keyed, flanged or spline options to meet up the many required output connections
An added output option includes the result without exterior shaft by providing an interior spline at the output
Planetary Gear Drive
Input power (max)71 kW (95 hp)
Input speed (max)2800 rpm2
Output torque (intermittent)33,895 Nm (25,000 lb-ft)
Output torque (continuous)18,710 Nm (13,800 lb-ft)
1 Actual ratio would depend on the drive configuration.
2 Max input speed linked to ratio and max output speed
3 Max radial load positioned at optimum load position
4 Weight varies with configuration and ratio selected
5 Requires tapered roller planet bearings (not available with all ratios)
General data
Approximate dry weight215 – 263 kg (475 – 580 lb)4
Radial load (max)28,570 kg (63,000 lb)3
Drive typeSpeed reducer
Hydraulic motor inputSAE C or D
Show More
Planetary Track Drives
High torque and load capacities, to transport equipment more than the roughest and steepest terrain.
Designed to allow mounting of plug-in motors.
Integral multi-disc parking brakes, whilst still keeping the drive small.
Steel or high-impact spheroidal cast iron structure.
Primary bearings provided for high radial and axial load capacities.
Easy maintenance: filling and draining ports places easy to reach.
Front side mechanical seal designed specifically for the earth-moving devices.
Maximum Torque Up to 170,000 Nm
Tranny Ratio Up to 230 iN
Quote RequestShare This
FeaturesTechnical SpecsCatalogs/DownloadsCustomer SupportVideos
Brevini planetary monitor drives are created for tracked automobiles and earth-moving devices. They possess a heavy-duty casing, a short overall duration, and great radial and axial load capability.
Our gearboxes are given with integral multidisc parking brake and have been created for direct installation of hydraulic plug-in motors. The careful choice of the materials and design allows our track drives, CTD and CTU, to be utilized in the most severe environmental working conditions. Brevini planetary track drive units are the perfect alternative for crawled undercarriages, drilling, crushing, screening and piling devices.
Planetary Track and Wheel drives
The modern and innovative design, the compact construction and the excellent performance characteristics of the PGR/PGW series of gear units make these especially ideal for traveling rubber tired or tracked self-propelled vehicles.
These compact planetary track drives are specifically designed for tracked vehicles: excavators and earth-moving machines.
They have a heavy-duty casing, a short overall length, and great radial and axial load capacity.
They have an integral multidisc failsafe brake and can be installed on hydraulic motors and so are ready to accept ‘plug-in’ hydraulic motors.
Shaft orientation:
> 10 kNm
high-torque, high load capacity
Other characteristics:
for wheel and monitor drives, small, rugged, for construction vehicles
This gear shaft final drive includes LO-HI speed and was designed for increased performance. The item is extremely useful especially in wheeled and tracked machines, which feature a considerably different operating/travel quickness ratio.
Note that that is also the right product for road paving machines, along with construction tools and forestry machines.
Final drive motors are hydraulic motors with a speed reducing, torque multiplying planetary gear set. In this post, we’ll talk about planetary gear sets, the parts that make them up, and how they function.
Planetary Gears and Last Drive Motors
Here are a few other blog posts you might enjoy ..
Last Drive Motors and Gears
3 Things You Should Know About Gear Essential oil for Final Drives
How to Troubleshoot an Overheating Equipment Box
Low Speed, High Torque Motors
The majority of the hydraulic motors used for propel motors are low-speed, high-torque (LSHT) motors. Speed and torque are related by power:
Power = Speed x Torque
That means if we want to increase torque for a given horsepower, we need to reduce speed:
Torque = Power / Speed
Hence the word “low-speed, high-torque.” One way of reducing acceleration involves the utilization of planetary gears. They offer speed reduction which outcomes in torque multiplication. And they do this all in a concise package in comparison with gear and pinion swiftness reducers, and that means they have excellent torque density. Below you can observe a planetary gear program from a final drive motor.
Planetary gear arranged from your final drive displaying the carrier, ring equipment, sun gear, and planetary gears
Carrier for a set of three planetary gears from a final drive
Planetary Gear Systems
In a final drive gear hub, you will usually have two sets of three planetary gears that rotate about a sun gear. They also mesh with a stationary band gear. The upper set of planetary gears are held with each other by a carrier, as shown in the image above. As you can see, all three gears are organized an equal distance from one another. At the guts is a place for sun gear to mesh and offer input to the system.
How Final Drive Planetary Gears Work
Let’s take a simplified look in how the planetary gears in a final drive work. Input power causes the sun equipment to rotate at high swiftness. The planets mesh with both the sun equipment and the ring equipment. They orbit sunlight gear while rolling around the ring gear. The effect is low rate, high torque output rotation.
Maintaining the Planetary Gearbox
On a final drive engine, the planetary gearbox requires equipment oil, also called equipment lube. It is vital to check the apparatus oil levels about every 100 hours and change the gear oil once a year. If you don’t alter out your gear oil, you’ll finish up with a thick sludge that will result in excessive wear of your planetary equipment system. At Texas Final Drive, we refer to that as “pudding.”
Another key aspect of keeping your planetary gearbox is definitely fixing any leaking seals immediately. If a seal is definitely degraded enough to permit oil to leak out, then that means dirt and dirt can make their way in. You don’t want your gears appear to be the gritty mess demonstrated below.
Your planetary gearbox is a key component of your final drive. If it fails, you won’t have the ability to generate the torque you have to keep your machine moving. Be sure you check and alter the gear essential oil and don’t disregard leaks. Also keep in mind that pudding and grit aren’t the thing you need in your gearbox!
The present day and innovative style, the compact construction and the wonderful performance characteristics of the PGR/PGW series of gear units make these especially suitable for generating rubber tired or tracked self-propelled vehicles.