Ex-approved by ATEX II 2 G Ex db IIC T4 Gb (gas); IEC Ex db IIC T4 Gb (gas); EG design test certifcate TÜV NORD CERT No. TÜV 02 ATEX 1920 X IECEx TUN 11.0036X; Leakage of parasetical shaft currents; Hollow shaft ø20…42 mm; Ceramic bearings for higher speeds