Timing Gear; Shaft Seal - Borger Classic FL Series Operating Manual

3.1.4

Timing gear

Fig. 1: Example: Classic FL series
3.1.5

Shaft seal

40
The rotors are driven synchronously and exactly through the car-
rier shafts by two gear wheels.
The shafts of the rotary lobe pump are seated on one side inside
the carrier gear unit.
As the gear unit is completely separate from the pump chamber,
disassembly is not necessary for any maintenance work.
Depending on the ordered version, the drive shaft is installed in
position 0 or position 1.
The rotary lobe pump can also be delivered with two drive shafts,
e.g. a rotary lobe pump driven mechanically by means of the PTO
shaft, where the direction of rotation can be changed by switching
the PTO shaft.
The timing gear is equipped with a breather system to compensate
for increased pressure due to rising temperatures. The breather
system must always be installed on the highest point of the rotary
lobe pump, compare the illustrations of the versions for the dif-
ferent mounting positions in
positions" on page 42.
Börger rotary lobe pumps are equipped as standard with mechan-
ical seals designed specifically for this pump type. These are used
to completely seal off the pump chamber from the gear unit, or
from the intermediate chamber (see
chamber (quench)" on page 41). These seals can be quickly
accessed through the working chamber without removing the
machine, and can be replaced easily.
www.boerger.de / www.boerger.com
Premium rotor
Dual-lobe, linear
— Polymers
— Type J
— Steel, stainless steel
Pos. 9.6 in the spare parts list
Orbit rotor
— Type P Dual-lobe, linear
Pos. 9.8 in the spare parts list
Ä Chapter 3.1.7 "Designs, mounting
Ä Chapter 3.1.6 "Intermediate
BA-Classic FL_en-US, 03.05.2018
Product Description