Vigogrease RE0 is the further development of our lubricant Molywhite RE00. The new mixture ratio of additive takes into account the elevated requirements on environmental compatibility and health protection. Vigogrease has a higher viscosity based on the new mixture. As a result, the shear stability of the lubricant and the temperature behaviour of the gear were improved. Despite the higher viscosity, the startup efficiency of Vigogrease was also improved by 5 per cent in comparison to Molywhite.

Modern, fully-automatic painting lines for the automotive, telecommunications or aircraft industry are highly specialised systems. The requirements for the painting technique and thus the robots which are used vary depending on the industry and the application. However, one factor is always the same: While emphasis is primarily placed on precise repetition and pinpoint placement of heavy loads for pick and place applications in the handling area, a painting robot may never deviate from the specified path. This must also take place at a specific speed with absolute precision. Even the slightest vibrations or fluctuations in velocity result in uneven colour application and a poor first-run rate. In a concrete application, the Nabtesco precision gear RV-100C with a hollow shaft diameter of 71 mm proved to be the ideal choice. The large hollow shaft could be used to route the supply lines. In addition, the gear had all the impressive features which have made Nabtesco the world market leader:

• High transmission precision
• Vibration-free through two-stage reduction
• Backlash well below one angular minute
• Reliable and wear-resistant
• Double-end support and a symmetric gear design
• High rigidity
• Shock load resistance of up to five times the rated torque
• Integrated angular ball bearings

Many photovoltaic - or solar thermal energy systems - however, primarily solar power tower plants - track the sun with their panels. Along with a high level of efficiency of the panels, a continuously precise and reliable tracking are indispensable for a fast ROI and continuous, maintenance-free operation.

Based on its RV series, Nabtesco developed a series of gears specially adapted to the requirements of tracking systems - the STG series. These gears for the azimuth axis are suitable for collector surface areas of 20 to 120 m². Thanks to their non-self-locking power transmission, they easily absorb shock loads from wind gusts, etc. This spares the mechanical components. The trochoidal gears are maintenance-free until the typical oil change intervals.

• Reductions of up to 1:50,000 can be achieved
• Degree of efficiency > 80 %
• Lower energy requirement than conventional worm gear solutions

Palletising robots have become a necessity in the beverage and packaging industry. Not only do they have to be very fast, they have to precisely position the goods to be packaged or stacked. This requires reliable gears with a compact size which can sustain high torques and accelerations with precise positioning – such as the Nabtesco RD series gears with hollow shaft. The ready-to-install, pre-lubricated gear heads are equipped on the motor-side flange with an adapter for the most common servo motors. All supply lines can be routed through the gear thanks to the large-dimension hollow shaft. Based on their very rigid construction and high level of precision, the cycloidal gears are especially well suited for rapid positioning movements with high loads and thus are ideal for the packaging industry

Motorised drives provide extreme precision for imaging processes like X-ray, nuclear spin or ultrasonic examinations. Positioning precisions in the millimetre range and even smaller are the norm. Since the machines are used for the examination of people, safety margins take on great importance in the event of an operational fault. The compact RV gears from Nabtesco are especially well suited for this application:

• A low backlash of less than one angular minute makes an essential contribution to high-quality and detailed physical images
• Very safe with an emergency stop torque up to five times the rated torque
• Very quiet, "low-noise" variant with angular toothing of the first gear stage

The adjustment of external parabolic aerials, such as those used for communication with satellites close to the Earth, requires highly precise positioning. This applies both for the azimuth (angle between the meridan and vertical plane of a celestial body) as well as the elevation angle. For the control of these aerials with a dish diameter of up to 17 metres, high torsional rigidity and tilt stability with large reductions are required. For this purpose, the Nabtesco's compact RV gears with or without a hollow shaft are ideally suited.

Thanks to the unique trochoidal/pin construction, the gears achieve a high repeat accuracy and path accuracy. This is also indispensable for the satellite control. The integrated angular ball bearings absorb the forces and moments of wind gusts and easily support larger aerials. In addition, the Nabtesco gears combine high rated torques with a backlash well below one angular minute. In the event of load peaks, such as in emergency stop situations, they can accommodate five times their rated torque.

For highly-dynamic, exact handling of pallets, the swivel axis is of great importance. It is subject to extreme acceleration and braking torques. These loads are especially high in emergency stop situations. The backlash of the swivel axis must also be minimised. That is because with a swivel arm radius of 1.53 metres, for example, even the slightest angle errors significantly impair the positioning precision. Therefore, a pivot arm drive must be able to meet the highest demands on load capacity, reliability and precision. The RV 160-E high-reduction precision gear from Nabtesco more than satisfies these requirements. Its arguments:

• Acceleration torque: 3,920 Nm
• Rated torque: 1,568 Nm
• Emergency stop torque: 5 times the rated torque
• Compact diameter: 280 mm
• Reduction ratio: i=171

Modern robotic welding lines work quickly and with absolute precision. Positioners and rotary tables assure the exact alignment of workpieces. A gear provides the drive of the horizontal rotary axis for the rotary welding tables. In this manner, all welding points lying on this axis – even complicated geometric structures – can be welded with pinpoint precision in the tenth of a millimetre range without having to unclamp and reclamp the workpiece. In the process, the weld pool must always be held exactly in the pan.

This is only possible if the gear works with absolute precision and reliability. That way, even the slightest deviations and thus faulty welding points can be avoided. The sturdy and ultra-precise Nabtesco gears of the series RV-C, RV-E, RS-A and RD-C are especially well suited for such welding applications: They are compact, can absorb heavy impact loads and are distinguished by their low backlash. In addition, cables and supply lines can be tidily routed through the hollow shaft of the RV-C and RD-C gears.

Precision is everything in tool manufacture Blanks and tools must be positioned at high speeds with micrometre precision. The complete machining in one clamping prevents imprecision, which can creep in through the frequent re-clamping of a workpiece. Compact precision gears with reduction in whole numbers provide for the exact positioning of the chain or disc magazine loaded with the various tools. Nabesco designed its RA series especially for the drive of such magazines in tool manufacture. On the basis of the reduction by the RA gears in whole numbers, the servo motor with its input shaft and the drive with the output shaft are always in the same position. In doing so, an absolutely precise positioning is always provided. A repetition of imprecisions and their exponentiation through the continuous rotation of the chain magazine in the same direction are eliminated.