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News | Ultra-precise heavy-duty gears

Exact and reliable positioning of heavy loads and large parts is a job for heavy-duty gears. Robust, high-torque powerhouses with maximum precision are required. A home match for cycloidal gears from Nabtesco. Their special design makes them extremely robust, precise, and powerful so they can effortlessly handle the heaviest of loads. Make things easy for yourself. Take advantage of our compact heavyweights!

Whatever you need to move, position, handle, or transport – large panes of glass, gigantic metal sheets, heavy machine parts, or even entire vehicles – we have the right heavy-duty gearbox for your precision application. Our heavy-duty gears deliver torques of up to 28,000 Nm and are equipped with a powerful integrated main bearing; they are insensitive to vibrations and feature a high overload capacity and extreme rigidity, as well as minimal backlash throughout the entire service life. They execute precisely executed motions and pin-point positioning even under extreme conditions.

Benefit from our expertise in the area of heavy-duty gears:

  • More than 35 years of experience in robotics & automation
  • Market leader in the field of robot gears
  • RV-2800N: The world’s largest precision gearbox
  • Neco®HT-900: The world’s largest plug-and-play gearbox
  • Compact high-performance gears for every requirement
  • Comprehensive support, optimised for the particular application
  • Extensive engineering services
  • Worldwide availability, with fast delivery
  • Unique service level

 

Heavy-duty gears from Nabtesco: Simply colossal

Our heavy-duty gears are specially designed for heavyweight applications. They feature utmost precision, dynamics and dependability, to assure reliable pin-point positioning even in the most demanding applications. An ideal solution for high torques and heavy loads.

The two-stage reduction principle ensures excellent performance in terms of dynamics and smooth operation, as well as high repeatability and path accuracy. The integrated angular ball bearings absorb both axial and radial loads and bending moments, and provide for high torsional  rigidity, as well as resistance to impacts and overloading (up to 500 % of the rated torque). Power transmission by means of cams and rollers ensures virtually full contact and even distribution of forces within the gearbox, which produces high rigidity. As a result, it is possible to transmit very high torques with maximum precision and smooth operation. The increase in backlash is negligible even after long-term use.

Easy handling of heavy loads:

  • Extreme precision: hysteresis loss < 1 arcmin, purely mechanical backlash of 0.1 – 0.2 arcmin
  • High torque capacity up to 28,000 Nm 

  • High torsional rigidity and bending strength
  • High shock resistance (up to 500 % of the rated torque)
  • Integrated main bearing for absorbing high bending moments
  • Low inertia 

  • Insensitive to vibrations 

  • Designed for low wear and a very long life 

  • High reduction ratio in a compact design

By the way: In cycloidal gears, the efficiency improves as the load increases. The reason: Higher torque results in higher rigidity. Rigidity reduces elasticity in the gear, which causes an increase in efficiency.

 

High-performance cycloidal gears: A real alternative to hydraulics or large planetary gears

Heavy loads are often moved by means of hydraulic systems or large planetary gears. However, cycloidal gears are clearly superior in most cases. Their special design principle achieves very high reduction ratios with only two to three gear stages, which guarantees precise positioning in a very compact design.

Heavy-duty cycloidal gears are more efficient, safer, more robust, more rigid, more compact and lighter than conventional technologies and have withstood the test of time in diverse heavy-duty applications around the world – from robotics, automotive engineering, the glass industry, shipbuilding, and mining to drilling rigs, cranes, the food and packaging industry, or welding.

Heavy-duty cycloidal gears are suitable for:

  • High-speed handling
  • Robot-assisted positioning
  • Heavy-duty robots
  • Pick-and-place applications
  • Assembly and handling systems
  • Rotational positioning
  • Indexing, positioning, or rotating applications
  • Pallet loading
  • Peripheral equipment

 

Large range of graduated sizes for high-precision and heavy-duty applications

Especially for precision applications with heavy loads, we offer you an extensive product portfolio of high-performance gears in graduated sizes to provide the optimal solution for even the most demanding tasks – from highly integrable component sets to compact gear units and dynamic servo gears, as well as powerful rotary indexers. For space-saving routing of data and supply lines, as well as drive shafts, our hollow shaft gears are the top choice. The large hollow middle axis provides sufficient space for cables and hoses. Our hollow shaft gears feature an extra large main bearing, which makes them ideal for all applications requiring a high allowable moment and high moment rigidity. The hollow design of these gearboxes is also a decisive advantage in terms of weight.

Our series for heavy-duty applications:

  • RV-N: Robot gears with a solid shaft
  • RV-C: Robot gears with a hollow shaft
  • Neco®HT: Modular high-torque gears for automation
  • RS: Robust precision gears with a hollow shaft for rotational positioning

It goes without saying that we will assist you with all matters related to your heavy-duty gears and heavyweight application and implement individual solutions that are custom tailored to the specific requirements of your application.

 

Would you like to learn more about our heavy-duty gears, or do you have questions about a particular product?
Then don’t hesitate to contact our experts.