4 Description of the Pump (Set)
19 of 80
HPK
1121.8/06-EN
Mechanical seal with jacket cooling
(operating mode "BM")
Cooled shaft seal with single, balanced
mechanical seal
▪ Cooling of seal chamber via seal housing
▪ Venting via clearance gap
Mechanical seal with jacket and seat ring
cooling
(operating mode "BG")
Cooled shaft seal with single, balanced
mechanical seal
▪ Cooling of seal chamber via seal housing
and coolable mating ring
▪ Venting via clearance gap
Mechanical seal with jacket cooling and
product circulation through external heat
exchanger
(operating mode "BR")
Cooled shaft seal with single, balanced
mechanical seal
▪ Cooling of seal chamber via seal housing
and product circulation through external
heat exchanger (pumping ring)
Cooling liquid IN/OUT
Circulation
Bearing assembly
Design specifications Drive-end bearing:
▪ Fixed bearing
▪ Paired angular contact ball bearings
▪ Axial movement of the rotor limited to 0.5 mm maximum
▪ Oil lubrication
Pump-end bearing:
▪ Radial bearing
▪ Cylindrical roller bearing
▪ Absorbs radial loads only
▪ Oil lubrication
Bearing bracket designation Example: P04as
Table7: Bearing bracket designation
Designation Description
P Bearing bracket
04 Size code (based on dimensions of seal chamber and shaft end)
a Reinforced (next bearing size up)
s Paired angular contact ball bearings (motor end)
Refer to the data sheet to find your bearing design.
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