Technical Data; Motor; Gearbox, Smg, Sfg Only; Shaft Seals - Grundfos SMD Installation And Operating Instructions Manual

11. Technical data

11.1 Motor

Seal
Material, motor housing
SMG, SFG
SMD

11.2 Gearbox, SMG, SFG only

Type
Gears
Seal monitoring
Drive-end bearings
Material, gear casing

11.5 Propeller

Number of blades
Propeller diameter
Material, hub
Stainless steel
Material, propeller

11.6 Sound pressure level

The sound pressure level of the mixer or flowmaker is
lower than 70 dB(A).
Mechanical shaft seal
Cast iron, grade 25 (EN-
GJL-250)
Cast stainless steel
1.4408
Planetary gearbox
Hardened and ground
steel
Leakage sensor incorpo-
rated in gearbox
Two tapered roller bear-
ings
Cast iron, grade 25 (EN-
GJL-250)
SMD SMG
2
180-370 mm 400-1000 mm
Stainless steel

11.3 Shaft seals

Sealing against leakage
Two lip seals and one mechanical shaft seal made
of tungsten carbide/tungsten carbide or SiC/SiC

11.4 Operating conditions

Continuous operation
The mixers and flowmakers are designed for
continuous operation.
Intermittent operation
It is mandatory to start the flowmakers by
a soft starter or a frequency converter.
The mixer or flowmaker must always be submerged
during operation.
SFG.xx.130
2 2
1300 mm
Polyurethane with
stainless-steel hub
SFG.xx.150-260.xx
2 or 3
1500, 1800, 2300, 2600
mm
Stainless steel or cast
iron (EN-GJS-400-15)
Polyurethane with cast-
iron reinforcement
39