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The Techdrives division of Lenze has upgraded its Vogel MPR range of planetary gearheads, resulting in higher torque ratings, torsional rigidity and shaft load capacity.

Backlash in the gearheads is reduced with standard values as low as 3arcmins and this can be further reduced on request to less than 1arcmin.

There are six gearbox sizes in the MPR range, with rated output torques from 44Nm to 1,000Nm, all with one- and two-stage models covering ratios from three to 100.

The four new models are at the lower end of the range, where requirements for high dynamics are more common.

The increased performance allows more compact and economical drive selection and the lower backlash values result in higher precision, particularly with reversing drives.

Planetary gearheads such as the Vogel MPR are frequently used in combination with synchronous and asynchronous motors.

The motor input connects rigidly to a ‘sun’ gear via a clamp hub connection.

Three ‘planet’ gears run around the sun, held in a planet carrier.

With a two-stage gearbox, the concept is repeated.

The resulting reduction in speed is efficient – 97 per cent for the one-stage model and 95 per cent for the two-stage model – and gives exact gear ratios, which is useful for positioning.

Compared to alternative gearbox designs, planetary gearheads are also compact and have a low inertia, making them suitable for tasks with dynamic motion profiles such as cam motion on packaging machinery and positioning in automatic warehouses.

The upgrades on the Vogel MPR gearheads are offered at no extra cost.

Depending on size, the permitted acceleration torques increase by 10 per cent to 30 per cent and the torsional rigidity by 30 per cent to 50 per cent, while the weights fall by 10 per cent.

For single-stage gearheads with ratios up to 10, the standard backlash previously offered was 6arcmins and this is now reduced to 3arcmins.

On request and for a small surcharge, the factory can select gears to achieve backlash below 1arcmin.

Alternatively, Lenze can bring in tools such as the DSD selection software, which usually results in optimised drives and lower costs.

The company has already configured a range of geared motors consisting of synchronous and asynchronous motors with Vogel gearheads and matching servo drives.

This ‘Rightsizing’ approach, based on a choice of products and accurate data, is said to achieve cost savings for machine builders.

With 40 years' experience, Lenze Ltd are specialists in drive and automation equipment for the UK market. Today Lenze employ 60 people and operate with management systems approved to ISO 9001:2008.

Experience and expertise

The engineering comes first. With almost 50 per cent of our staff being qualified engineers, the right-sized technical solution to your problem is our goal. Our vision of right sizing means to work with you in order to achieve the optimum solution in terms of cost and performance.

The complete drive system  

Our products fit together to make the complete drive and automation system. Lenze products include automation, controllers, servos, inverters and geared motors. Our Techdrives division adds essential drive components such as couplings, actuators and locking bushes to complete your design.  

Worldwide, we are there to help you

Lenze companies are in 29 countries and have sales offices in a further 24. Full product information is available on our website and the international helpline makes it easy to contact us.

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