Technical Specifications Protection ratings for spring-applied brakes BFK457 and BFK458 The protection classes listed in the table were classified under the test conditions stipulated by the DIN EN 60529 standard (protection by housing) and the DIN EN 60034-5 standard (rotating electric machines). usually restricted when it has a slot for manual release. Generally, if the brake is used in damp conditions, it is necessary to ensure there is water drainage and ventilation. When the brake is mounted under the fan cowl, it is necessary for the brake to be protected by the fan and the cowl from splashes of water. This protection by the cowl is Mounting position BFK458 without additional components BFK458 with seal and shaft seal BFK457 without additional components On the machine’s free side frame Under the fan cowl without manual release Under the fan cowl with manual release Kendrion INTORQ GmbH Wülmser Weg 5 31855 Aerzen Germany T +49 5154 70534-222 [email protected] www.kendrion.com © KENDRION 04.10.2021