Stainless steel in the food industry
Automated processes are standard practice in the food industry . Production efficiency is not the only motivation : hygiene also plays a key role in the food industry . DEPRAG SCHULZ GMBH u . CO . stainless steel motors in the food industry .
Alexandra Kist , Stainless Steel World
In order to ensure that the right drive is selected to meet the high requirements for hygiene in the food industry , Deprag Schulz usually recommends their Advanced Line air vane motors . All their external components are made from stainless steel and are impervious to normal cleaning agents . The smooth surface of these air motors is easy to clean . The drives are so well sealed with durable long-life radial shaft seals that no air can escape and equally no dirt , water or other solutions can penetrate the motor . The motors are even resistant to water penetration from commonly used cleaning spray systems . A wet environment is no concern for this motor . It can even be used underwater as in the case of many stirring applications . All Advanced Line stainless steel motors are lubricated with food grade USDA-H1 grease and can be operated oil-free . A power reduction of approx . 10-20 % based on the technical data stated in the product catalogue should be taken into account when designing drives for oil-free operation .
Combatting condensation In many applications , condensation can form in air supply lines . It is therefore advisable that measures are taken to ensure that the motor is not located at the lowest point in the system and that it can be flushed out with water . Many users take precautionary measures , not only relating to the layout of the motor in their system , but also concerning the use of water separators or dryers in front of the drive . If all this is not possible , then a special coating is recommended for those components within the motor ’ s interior which are made from stainless steel . This is because there is a limit to the use of stainless steel for heavy duty , highspeed internal parts . This so-called CWL coating provides insensitivity to corrosion .
Broad range of applications Deprag Schulz ’ s motors can be used in different segments of the food industry . Stirring dough , moving and cutting sheets of dough , rotating pork belly skewers , mixing sausage meat or unwinding sausage skins : the food industry applications are endless . For instance , the Advanced Line air motor could be used in an agitator in fruit juice production . Their 300W air motor drives a propeller stirrer in a magnetic agitator at the speed of 700 rpm . They also have a drive that is suited for high-torque requirements in industrial agitators : the Advanced Line high-torque motors generate immense power in the smallest of spaces . The 900W high-torque motor with a nominal speed of 22 rpm
overcomes a starting torque of 585 Nm and has a maximum diameter of 63 mm .
Special solutions Deprag Schulz ’ s engineers have continued to optimise their air motors over the decades and the company ’ s standard programme has been adjusted to meet the needs of our customers . The Advanced Line motors belong to the Deprag catalogue programme . Their customers benefit from longestablished reliable drive solutions for the food industry and medical technology . Deprag Schulz offer these motors in a wide power range from 20 W to 1.6 kW combined with a variety of planetary gears from their own production with speeds of 7 to 24,000 rpm . This spectrum of stainless steel motors has made it possible for Deprag Schulz to compete in this market segment . Thanks to their development specialists and a high level of vertical integration , they are able to react flexibly to customer requirements , when a certain design , such as a specific flange connection or special spindle request , is not available off the shelf . 85 % of their manufactured drives are customerspecific solutions based on standard components .
42 Stainless Steel World March 2023 www . stainless-steel-world . net