BB5 Between Bearings

Model: HBU-BB5

Type: Between Bearings, Multi-Stage Barrel Pump
Max. Capacity: M3/Hr 350
  USGPM 1,500
Max. Head: M 1200
  Ft. 4,000
Max. Temp: °C 350
  °F 650
Max. Pressure: Barg 150
  PSIG 2,220
  PSIG 900
Discharge Sizes: MM 50 to 150
  Inches 6 to 16
Max. Speed: RPM 3,600


The HBU multi-stage is a diffuser-casing, barrel pump with tandem impellers and balancing drum to carry axial forces. The HBU is designed for applications requiring the performance of a ring section pump but demanding the design attributes of an API 610 barrel pump.

Standard Features:

  • Centerline supported casing with top/top nozzles.
  • Bespoke designs tailored to project requirements.
  • #300 RF or #600 RF flange ratings up to 150 bar MAWP.
  • Available in all API 610, Table H -1 materials.
  • Estimated MTBR upto 50% lomger than equivalent BB3 designs.
  • Fully enclosed, dynamically balanced impellers.
  • Cylindrical roller radial bearings for ample load carrying capability.
  • Duplex angular contact 7300 series thrust bearings.
  • Labyrinth bearing housing isolators.
  • Heavy duty baseplate, drip rim or drip pan designs.
  • 4 frame sizes, 12 hydraulics, 14 stages.

Optional Features:

  • High pressure special casing design.
  • Oil Flinger/Oil Ring/Purge Mist/Pure Oil lubrication of bearings.
  • Oversized shafts and bearing housing arrangements.
  • Fan/Heat­sink bearing housing cooling arrangement for operation at elevated temperatures, to eliminate the need for cooling water.
  • Magnetic bearing housing isolators.
  • Pre­-grouted baseplates or non-­grouted baseplates.
  • Non­-standard API 610 material available.