ROTARY BLOWER STAGE
ROTARY BLOWER STAGE
FOR OIL-FREE DELIVERY AND COMPRESSION OF AIR AND GASES
Robust 3-blade blower stage for plant construction. Versatile. Available as standard in 22 sizes (GM 3 S to GM 1080 L).
EXECUTION
Blower with 3-lobed pistons and two pre-inlet channels cast in the cylinder section on the pressure side to reduce noise by reducing pulsation. Housing ribbed and air-cooled. Fan cylinder up to GM 400 L undivided.
From the GM 430 S onwards, the cylinders are divided horizontally. Up to the GM 80 L, the feet are screwed onto the blower, after that they are cast on. Lubricating oil supply by splash lubrication.
MATERIALS
Housing parts (cylinder, side plates, wheel housing and housing cover) made of GG-20. Shafts made from C 45 N. Pistons made from C 45 N (GM 3 S to GM 80 L). Shafts and pistons are forged from one piece. GM 90 S and GM 130 L: rotors and shafts made of EN-GJS-500-3. GM 150 S to GM 240 S: rotors made of EN-GJS-400-18, shafts made of C 45 N. Timing gears made of 16 Mn Cr 5E. Other materials on request.
SHAFT SEALS
Pumping chamber sealing by 4 rectangular ring labyrinth seals with splash rings on each shaft end. 4 radial sealing ring rectangular ring labyrinth seals are available on request. Drive shaft sealing by radial sealing ring. If the drive shaft is gas-tight, 2 radial sealing rings with a grease barrier in between are used.
CONVEYING DIRECTION
from top to bottom (vertical)
POSITION OF THE DRIVE SHAFT
on the left (looking at the drive shaft) the drive shaft on the right is optionally possible.
DRIVE
Flying drive via narrow V-belts, directly driven via elastic coupling or with a gear.
