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Wilo-Rexa BLOC | Wilo

Wilo-Rexa BLOC

Economical sewage transport in dry well installation

Your advantages
Wilo-RexaBloc RE

Economical sewage transport in dry well installation

Whether in intermediate pumping stations, collector pumping stations or wastewater treatment plants – sewage pumps of the Wilo-Rexa BLOC series with low-clogging impeller or single-channel impellers enable reliable and overflow-proof sewage transport even in continuous operation. The standard-equipped IE3 standard motors and high overall efficiency keep energy costs low. Thanks to the back pull-out design, maintenance and servicing work is simplified and operating costs are minimised.

(*based on IEC 60034-30-1)

Your advantages

  • High operational reliability thanks to closed bearing brackets with oil-filled sealing chamber, additional leakage chamber and two mechanical seals
  • Low energy costs due to high overall efficiency
  • Long service life when pumping abrasive and corrosive fluids thanks to various Ceram coatings
  • Low operating costs thanks to a service-friendly and time-saving construction with back pull-out design
  • Offers high flexibility for local space availability thanks to horizontal or vertical installation
Series description
Wilo-RexaBloc RE


Sewage pump in monobloc design with standard motor for stationary dry well installation.


Pumping of

  • Untreated sewage
  • Sewage containing faeces in accordance with EN 12050-1
  • Wastewater


  • Optional external pencil electrode for the sealing chamber monitoring



Wilo-RexaBloc RE 08.52W-260DAH132M4


Sewage pump as a monobloc unit with fitted standard motor




Nominal diameter of pressure connection, DN 80


Performance index


Vortex impeller


Impeller diameter


Version flange hole:D = DINA = ANSI


Standard material version


Installation type: H = horizontalV = vertical


Construction size standard motor


Number of poles (nominal speed of the hydraulics)

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Operating mode: S1
  • Protection class: IP 55
  • Insulation class: F
  • Fluid temperature: 3…70 °C
  • Ambient temperature: 3 to 40 °C
  • Motor efficiency class: IE3


  • Hydraulic housing: EN-GJL 250
  • Impeller: EN-GJL 250
  • Hydraulics shaft: Stainless steel 1.4021
  • Bearing bracket: EN-GJL-250
  • Static gaskets: NBR
  • Sealing on pump side: SiC/SiC
  • Sealing on motor side: NBR
  • Motor housing: EN-GJL-250


Sewage pump in monobloc design with fitted standard motor for the horizontal dry well installation in continuous operation.


Hydraulic system with axial suction ports, radial discharge ports and bearing brackets as a single unit. The connections are configured as flange connections.


Bearing bracket with sealing and leakage chamber for admission of fluid ingress via the seal. Fluid-side seal via a bidirectional mechanical seal, motor-side seal as a rotary shaft seal. The sealing chamber is filled with medical white oil, the leakage chamber is shut up to the motor. Optionally, the sealing chamber can be monitored with an external pencil electrode.


IEC standard motor in B5 design as three-phase motor with motor efficiency class IE3.

Scope of delivery

  • Monobloc unit with fitted standard motor in three-phase version, without connection cable
  • Angle bracket on the pressure connection for fastening lifting equipment
  • Installation and operating instructions

Installation and operating instructions

Wilo-Rexa BLOC/RexaBloc RE

Article Number 6078738
Edition 2022-10
Page format 209.9 x 297.0 mm
Number of pages 112
PDF (12 MB)

General overview

General Overview 2022 - International version

Edition 2022
Page format 209.9 x 297.0 mm
Number of pages 78
PDF (38 MB)

Certification booklet

Wilo-RexaBloc RE, Wilo-Rexa BLOC

Article Number 6074551
Edition 2022-08
Page format 209.9 x 297.0 mm
Number of pages 20
PDF (10 MB)


Economical sewage transport in dry well installation

Page format 209.9 x 297.0 mm
Number of pages 4
PDF (512 KB)

Certificate REACH

REACH Regulation

Edition 2021-05
Page format 209.9 x 297.0 mm
Number of pages 4
PDF (212 KB)
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