Planetary Gears
Part of the Solution
Our Claim. Our Promise.

Planetary Gears from IMS Gear - Moving the World.

Our whole life is motion, isn’t it? No matter whether in your job or at home, old or young, day or night ... For us at IMS Gear, motion is part of our daily business. After all, our planetary gears are an indispensable element when it comes to directing power in the right direction, and that for a great number of industries and applications.


As an experienced manufacturer, we are already an integral part of countless applications in a variety of fields. And as a personal development partner, we combine proven solutions with new ideas, thus making sure that the world of tomorrow will get the drive it deserves. Sounds exciting? We totally agree. Are you up for moving things with us?


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A perfect planetary gear is demanding. But it’s easy to get there!
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About IMS Gear

The Modular System of IMS Gear

For planetary gears that perfectly match your individual requirements. (Almost) everything is possible. What is important for you? We have the solution.
- Performance
- Service life
- Noise and weight optimization
- Perfect interface design
- Free motor selection
- Optimum price-performance ratio


And this is only a selection from among the manifold options that are available for you with IMS Gear as a partner. Our variable modular system makes your planetary gear come true - worldwide, quick, in large and small quantities, cost-efficient and with some extra personal service.

Only available from IMS Gear.

Low Noise by IMS Gear

Do you feel the silence?

Don’t you agree that silence is something wonderful? In many industrial applications, low noise is decisive for the daily operation. And where convenience meets performance, the low-noise planetary gears from IMS Gear are a natural part of the solution.

As an experienced manufacturer of low-noise gears we from IMS Gear have been consistently working on making our planetary gears even better - and less noisy. The fact that the development of our solutions is subjected to extensive tests in our in-house laboratories is part of our value proposition and our claim.

You are interested in low-noise planetary gears from IMS Gear or would like to realize a project with us? Then you better contact us right away - together we will find the perfect way for your individual requirements.

Our Product Lines

Proven Quality

Our plastic planetary gears from the Eco Series combine efficiency with economy.

  • Versatile
  • Good efficiency
  • Attractive price-performance ratio
Convincing Power Packs

Our metal planetary gears from the Pro Series combine performance with robustness.

  • Versatile
  • High to highest efficiency
  • Robust and long-lived
Motion that Inspires

Our new Drive Series, especially designed for the particular requirements of wheel drives.

  • Strong power transmission
  • Little installation space
  • Low noise development
Reduced to the MAX! We just make more from less: Less installation space, more power!
Our MAX Variants

We Create Solution Spaces

What is possible? What is sensible? And is the possible solution always sensible - or are there any other, better, more efficient solutions for you? These ideas guide us at IMS Gear when it comes to developing custom-fit planetary gears together with our customers.

As an experienced development partner, we at IMS Gear are always excited to find new solutions for the world of tomorrow. Our wide range of configuration options not only offers you more opportunities but also greater safety and efficiency. What we generate from this is your highly individual solution space - from prototype to serial production.

You have an idea?
Let’s talk about it.

Colleagues at IMS
IMS Drive - Our planetary gears for wheel drives

We did not invent the wheel. But we set it in motion.

Industries & Competences

Application Automation
Takes you forward

Motion, performance, efficiency and safety - and we are in the midst of it: For example with drive solutions for solar tracking modules, rescue cutters and more. Compact installation space, low noise development ... Let’s talk it over.

Application example
Application Logistics
The world in motion

Freight flows, the transportation of small and big goods, and that fast and to the point - modern logistics processes are highly demanding. Powerful drive solutions are essential elements in this regard. We are working on them.

Application example
Application Appliances
Making life easier

Convenient, clean and cushy: Modern appliances make our lives better and easier. With our drive solutions, we are a part of it: In ice machines, robotic vacuum cleaners or lawn mowers and many more devices.

Application example
Application Agricultural Technology
In meadows, farmlands, fields and stables
Agricultural Technology

Pioneering agricultural processes combine performance with efficiency and sustainability. Our planetary gears are important elements, e.g. in sowers, fertilization systems and many more.

Application example
Application Building Engineering
For safety with a vision
Building Engineering

The future of building engineering is smart. State-of-the-art IT and sensor systems are combined with equally powerful drive solutions, e.g. in safety systems, barriers, doors, gates, locks and access controls.

Your application is not included? No problem:

+ 49 (0)771 8507-282


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Our Expertise - Your Added Value

What Is a Planetary Gear?

A planetary gear (also: epicyclic gear) is a technical design that serves as a “link” for power transmission between a drive source (the motor) and an application to be moved (e.g. the movement of a wheel).


For many decades, we from IMS Gear have been renowned experts for the design and manufacturing of planetary gears for a great variety of industrial applications.


  • Where Are Planetary Gears Used?

    The advantage of planetary gears is their ability to combine high power density with little installation space. A further important factor is the low noise emission that can be realized by the specific design. This makes planetary gears an ideal solution for a great variety of applications, e.g.

    • logistics (industrial trucks, driverless transport vehicles, ...)
    • building technology (e.g. automated access systems, barriers and doors), household devices (e.g. robot lawn mowers, appliances, ...)
    • agricultural technology / farming (e.g. feeding and milking robots, seed drills, ...)
    • and many more.
  • How Does a Planetary Gear Work?

    Basically, planetary gears work as the name implies: the sunwheel is in the center and driven by the motor. It confers its motion to three rotary planetary wheels which form a stage. They are arranged on the bearing bolts of a planetary carrier. The last planetary carrier is rigidly connected to the drive shaft and so provides power transmission at the output. On the outside, the planetary gear wheels rotate in a gearbox with internal gearing, the so-called ring gear.

    Input and output are arranged coaxially with planetary gears, the shafts rotate in the same direction. PLGs are suitable for clockwise and counter-clockwise rotation, alternating, continuous and intermittent operation and are characterized by a high level of efficiency. The compact design offers high power density compared to other gear designs and high torque transmission for extremely small installation space.

    If the number of teeth of the sun wheel and planetary wheels is changed, different gear reductions are possible within one stage. We from IMS Gear combine the reductions of our planetary gears in up to four stages. In this way, an enormous variety of different gear requirements can be realized.

  • Why Is the Output Torque of a Planetary Gear so Important?

    Output torque is the most important parameter when choosing a planetary gear. The gear reduction reduces the relatively high rotational speed of the motor (rpm), delivering a lower rotational speed at the output end. This increases the output torque in inverse ratio. To link the planetary gear to the respective application a specific connecting flange is required.

    As different manufacturers apply different measuring methods, great care must be taken when seeking to make a comparison. We will be pleased to calculate the maximum axial and radial load for your specific application under consideration of all parameters. Higher loads can be achieved through design measures. We will be happy to develop tailor-made implementation concepts for our customers.

  • Which Motors Can Planetary Gears Be Adapted to?

    The connection between driving shaft (the motor) and the planetary gear is highly individual as there is a great number of different motors (and manufacturers) with particular specifications. This is where manufacturers of planetary gears show their degree of flexibility. Basically, all IMS Gear planetary gears can be adapted to fit all motors available on the market; individual solutions are possible at the input and output sides.

  • How Relevant Are “Operational Dynamics” and “Gear Backlash” for Planetary Gears?

    High levels of operational dynamics are achieved through low inertia torques, smooth running and low levels of mechanical wear. When it comes to designing and manufacturing planetary gears, IMS Gear uses plastic instead of metal for the planetary wheels where appropriate and technically feasible. This delivers low inertia torques. If necessary, we achieve smooth running through high-quality needle bearings or low friction coefficients between metal and plastics, low levels of mechanical wear through a special gearing design and the use of plastics wheels. In a nutshell: The material mix typical of IMS Gear ensures excellent operational dynamics.

    In this context, the gear backlash of the planetary gear has to be considered. It depends on many factors: Type of load, number of stages, bearing, version, combination of materials. When seeking to compare different manufacturers, always remember that here, too, there are no standardized measuring methods.

    Depending on the field of application, the efficiency of planetary gears is also to be specified. The gearing efficiency only takes account of the rolling motion of the gearwheel, the gear efficiency of all losses of the entire bearing. It is inevitably lower than the gearing efficiency. As there are no standardized measuring methods, a comparison of the efficiency levels of different manufacturers always requires special attention. Please contact us if you have any special requirements here.

  • Which Temperature Ranges Can Planetary Gears Be Used in?

    The application resp. operating temperature range of planetary gears depends on the respective application but also on the material and lubrication. Our pure metal versions with standard lubrication range between −30° and +120° C, the PK-series made of plastic between −15° and +65° C.

  • Which Protection Classes Do Planetary Gears Have?

    The protection classes of planetary gears are defined according to DIN EN 60529. Planetary gears (short: PLGs) from IMS Gear can fulfil the following protection classes:

    • Gears with sintered bearings: IP 40
    • Gears with ball bearings (2 RS): IP 53

    Upon request you can obtain output and motor gaskets to realize higher protection classes.

  • Which Installation Position Is Possible for Planetary Gears?

    Due to grease lubrication the IMS Gear planetary gears can be installed in any desired position. In vertically arranged outputs, additional sealing measures can be provided on request.

  • What Is the Service Life of Planetary Gears?

    Depending on environmental conditions and the operating data of the drive system, the service life of a planetary gear ranges between 200 and 30,000 hours. The great variety of application options precludes any generally applicable forecast of service life.

    Planetary gears from IMS Gear are usually lubricated with grease and therefore maintenance-free during their service life. Depending on the requirements profile, we select the optimum lubricant from more than ten options.

    The structural conversion through the hardening of the individual metal parts has a positive effect on the strength and wear behavior. IMS Gear has its own heat treatment shop. As the entire metal manufacturing is in-house, we can choose from various steels for hardening.

  • How Noisy Are Planetary Gears?

    Low-noise behavior is a decisive criterion for certain applications of planetary gears. In these cases, so-called low-noise planetary gears are the solution of choice. To achieve an optimum noise behavior, increased demands on concentricity and axial run-out of the motor end plate, flange and shaft need to be met. Axial forces act on the motor shaft due to helical gearing. Sufficient dimensioning of the motor shaft bearings should be taken into account here.

    To counteract the grease-promoting effect of helical gears, radial shaft sealing rings or sealed motor bearings can be used. Especially in the field of low-noise planetary gears we from IMS Gear have developed extensive experience and are available as a reliable manufacturer and development partner.

All specifications are guide values. Deviations are possible and may be caused by not standardized testing and measuring methods. Please contact your technical contact at IMS Gear for detailed information. Technical modifications are generally subject to change.