Wilo-EMU TR 22… – TR 40…

Series description


Compact directly driven submersible mixer


  • Swirling of deposits and solids in stormwater retention tanks and pump sump
  • Destruction of floating sludge layers

Type key

E.g.:Wilo-EMU TR 36.95-6/8 S17
TRSubmersible mixer
36x 10 = nominal propeller diameter in mm
95x 10 = propeller speed in rpm
6Number of poles
8x 10 = stator length in mm
S17Propeller code for welded propellers (without = PUR propeller)

Special features/product advantages

  • Works reliably.
    Clogging-free operation with backward-curved incoming flow edge and self-cleaning helix hub.
  • Reduced costs.
    Quick and simple to install as a ground, wall or pipe fixation. Even in the smallest of space requirements.

Technical data

  • Mains connection: 3~400 V, 50 Hz
  • Submerged operating mode: S1
  • Protection class: IP 68
  • Max. fluid temperature: 40 °C
  • Mechanical shaft seal with SiC/SiC pairing
  • Permanently lubricated roller bearings
  • Max. immersion depth: 20 m


  • Stationary installation on wall and floor
  • Flexible installation via lowering device
  • Can be swivelled horizontally when installed with a lowering device


  • Housing components: EN-GJL-250
  • Propellers: PUR or stainless steel 1.4571
  • Propeller hub: Stainless steel 1.4571
  • Screwed connections: Stainless steel 1.4301 or 1.4571
  • Seal bushing: Stainless steel 1.4571



2- or 3-bladed propeller with a nominal propeller diameter of 220 mm to 400 mm. Clogging-free construction thanks to backward-curved incoming flow edge and patented helix hub.


Wilo-submersible motor of the T-series (surface-cooled motor) with standard connection for an easy and efficient adaptation of the motor power. The motor heat is given off directly to the fluid via the housing. The winding is equipped with a temperature monitor. Large-sized inclined and grooved ball bearings ensure long service life of the motor bearings.


Double shaft sealing with large-volume sealing chamber to collect leakage from the mechanical seal; available with external sealing chamber electrode upon request. On the fluid side, a corrosion- and wear-resistant mechanical seal made of solid silicon carbide material is used; on the motor side, a rotary shaft seal is used. On TR 36 / TR 40 types, a seal bushing ensures long-term corrosion-protected fit of the mechanical seal.


The power cable is a type NSSHÖU cable for heavy mechanical loads. The power cable enters the motor housing through a water pressure-tight cable inlet with strain relief and bend protection. The individual wires as well as the cable sheath are additionally sealed to keep out fluids.


A separate configuration must be carried out for each application to ensure optimum generation of fluid current. Carefully follow the instructions for the supplied configuration when installing the units.


Operating mode S1 ‐ continuous duty:

The submersible mixer must be immersed when operated. Surfacing the propeller is strictly prohibited. In the case of fluctuating fluid levels, the system should switch off automatically if the degree of water submersion drops below the minimum level. The power cables must be installed in a way that these cannot be drawn into the propeller!


  • Special voltages
  • Thermistor temperature sensor
  • External sealing chamber control
  • Ceram C0 coating
  • Ex-rated to ATEX or FM


  • Lowering device
  • Auxiliary lifting device
  • Floor fixation bracket
  • Special fastening pieces for the use of an auxiliary lifting device for multiple units
  • Terminal stop
  • Additional rope anchoring
  • Fixation sets with anchor bolts

Scope of delivery

  • Submersible mixer with mounted propeller and cable
  • Cable length per customer request
  • Accessories per customer request
  • Operating and maintenance manual





Gear chamber


Sealing chamber

directly driven

FC operation

Single-stage planetary gear


Two-stage planetary gear


Sealing by mechanical seal on motor side


Sealing by rotary shaft seal on motor side

Sealing by mechanical seal on fluid side

Seal for rotary shaft seal on fluid side


Explosion protection



Wet well installation, ground installation

Wet well installation, wall fixation

Lowering device for wet well installation

Tripod for wet well installation



Cast propeller

Steel propeller

PUR propeller

PUR/GRP propeller


GRP propeller



Motor temperature monitoring, bimetal

PTC motor temperature monitoring


Motor leakage monitoring

Sealing chamber monitoring


Propeller blades can be replaced individually



Certification Booklet Wilo-EMU AVU

Article Number 6078118
Edition 1509
Version number 02
Page format A4
Number of pages 29

PDF (522 kB)


Certification Booklet Wilo-EMU TR(E) / Wilo-Sevio MIX BG / Wilo-Sevio FLOW BG

Article Number 6074694
Edition 1702
Version number 02
Page format A4
Number of pages 32

PDF (1 MB)


Certification Booklet Wilo-EMU HHV

Article Number 6072705
Edition 1509
Version number 03
Page format A4
Number of pages 32

PDF (606 kB)


Drainage and Sewage

Page format A4
Number of pages 24

PDF (8 MB)


General overview

Edition 2017
Page format A4
Number of pages 72

PDF (46 MB)


Wilo-EMU TR 22 ... TR 40 (Uniprop without gear)

Version number 3.0
Page format A4
Number of pages 101

PDF (2 MB)



PDF: Wilo-EMU TR 22… – TR 40…


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