A Various applications
a elevators, lifts, feed motors
b metal-cutting machine tools
c slow-speed vehicles, c' high-speed vehicles
d extruders
e calenders
B Compressors
f back-pressure piston compressors, f' unloaded
g back pressure rotary compressors, g' unloaded
h turbocompressors
C Fans
i back-pressure fans or centrifugal pumps, i' fans unloaded
k rotary piston blowers, k' unloaded
D Mills
l ball mills
m centrifugal mills
n hammer mills
o impact mills