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Performance and flexibility: Bauer delivers for the drinks industry

18 December 2017

Yasar Yüce, Product Manager for Bauer Gear Motor, explains how modular gear motor designs can help drinks manufactures deliver on energy, hygiene and productivity demands.

Bauer has developed the HiflexDRIVE range of gear motors, a modular system that can deliver high energy efficiency

Bauer Gear Motor, part of Altra Industrial Motion Corporation, can deliver solutions which are tailored to meet the requirements of the drinks industry. By looking at the production site as a whole, experts from Bauer can offer flexible solutions that meet the goals for efficiency, reliability and productivity.

Production facilities will often include several different environments: such as chilled areas, hygienic zones and production lines that require regular washdowns. Each of these environments presents its own challenges in terms of the equipment being installed. While there are a range of drive solutions for each of these areas, sourcing components from several different manufacturers will create a more complex situation in terms of maintenance and spare parts.

Bauer has set out to simplify this situation by developing the HiflexDRIVE range of gear motors, a modular system that can deliver energy efficiency with up to IE5 motors according to IEC TS 60034-30-2. Each model is offered in a standard painted configuration, aseptic or stainless steel versions, which means there is an available solution for almost any environment.

Motor performance

The HiflexDRIVE range can be specified with electrical drive motors rated from IE0 to IE5. The IE5 range uses the latest in permanent magnet synchronous motor (PMSM) technology. PMSMs offer improved efficiency when compared to induction motors, especially under partial load conditions, and have the added benefit of maintaining constant speed, independent of the load. This means that the motor speed does not vary - despite overload variations or cases of voltage drop - as long as the mains frequency is kept constant.

The PMSM series is an environmentally friendly range of motors, employing a highly efficient design of rotor that offers several key benefits. It reduces heat losses from the rotor by 100 percent; total losses by approximately 25 percent; and increases total efficiency by 10 percent or more. These savings represent a significant advantage for stainless steel drives, which dissipate heat less efficiently than aluminium or cast iron.

For the PMSM user, this improved performance translates into lower total cost of ownership, a reduction in CO2 emissions and ongoing savings that buffer against future increases in energy costs.

Geared solutions

Production facilities will often include several different environments: such as chilled areas, hygienic zones and production lines that require regular washdowns

Matching the most suitable motor and gearbox combination to an application is key to delivering the most efficient and compact solution. In the standard configuration, the HiflexDRIVE gearbox offers a low weight, high efficiency, 2-stage gear design that offers cost effective and reliable performance.

Now available in three sizes with rated torques from 80 to 300Nm, the gearboxes can be matched to the most suitable motor to create the ideal solution for every application. The flexibility in design means that the final output speeds can be matched exactly to each process; the combination of gear ratios and variable speed drive settings ensures a large number of applications can be satisfied by a small number of components.

Clean living

In areas where regular washdowns are required to maintain a clean and hygienic environment, both the aseptic and stainless steel variants have several features that enable them to endure in this arduous environment. The motor is designed so that a fan and cooling ribs are not required thereby allowing for a completely smooth outer casing with a non-drive end which is sealed. This eliminates any dirt traps on the motor casing and prevents re-infection of the local environment caused by air movement from a cooling fan.

The design also includes a very high level of ingress protection of IP67 as standard, and IP69K; which is a special designation for washdown applications involving high pressure, high temperature water. In addition, the aseptic drive is painted using an acid and alkali resistant formula, which can withstand chemicals with a pH range of 2 – 12. As a result, this drive system can withstand the cleansing solutions and disinfectants that are commonly used within the drinks industry without affecting its performance.

Stainless steel is also available, offering the same levels of ingress protection and specially shaped outer casing to promote hygienic conditions. In addition, the stainless steel variant offers an increased mechanical resilience, making it suitable for areas with high traffic levels.

The combination of the stainless steel casing and the IE5 PMSM motor make an ideal solution, especially in areas where ambient temperatures are carefully controlled. The reduced heat losses of the PMSM reduce the workload for the temperature control equipment, making further savings for the manufacturer. Furthermore, Bauer's HiflexDRIVE units can operate in temperatures as low as -40°C, making them ideal for all production areas, even frozen storage.

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