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Series Muffin Monster 30005

Sulzer Grinder - 30005 Muffin Monster® - Open Channel series

The 30005 Muffin Monster sewage grinder is designed to protect pumps and other equipment by grinding down the toughest wastewater solids. Its dual-shafted, slow speed, high-torque design shreds tough solids that typically cause sewer problems.


  • Open channel configuration
  • Grinder cutter stack heights from 300 mm to 1500 mm
  • Hardened alloy steel cutters (standard), 120 mm diameter
  • Ductile iron housings
  • Hardened alloy steel shafts, 50 mm hex
  • Mechanical seals with tungsten carbide faces, 10.3 bar maximum dry working pressure
  • Available with channel or wall mounted frame options for easy installation


  • Flow rates up to 1227 m3/hr


  • Pump stations
  • Collection systems
  • Headworks at wastewater treatment
  • Private facility discharge to municipal sewer system
  • Prison sewage system protection
  • Industrial wet waste grinding and maceration

Monster Renew grinder

In place of repairing a worn grinder, choose a Monster Renew unit. Sulzer provides a new, factory-built grinder cartridge to replace the worn grinder cartridge. Remove the motor and reducer from the worn unit, install the motor and reducer on the Monster Renew unit, and install the new assembly in place of the worn unit.

Benefits include:

  • Minimizes operational downtime
  • Quick turnaround
  • All new parts
  • Great time to upgrade unit
  • Full factory warranty on the Monster Renew grinder cartridge

Muffin Monster motor assembly

  • 2.2 kW standard, 4.0 kW optional
  • Optional explosion proof and immersible motors available
  • 25:1 reducer, cycloidal design

Muffin Monster controller

  • Ensures maximum grinding ability with minimum stoppage
  • Designed and programmed for specified motor

Muffin Monster frame options

  • Adapt grinders for easy installation
  • Channel frames to fit most channel types
  • Wall frames to mount on flat or round walls
  • Type 304 or 316 stainless steel construction
  • Guide rails for easy installation and maintenance

Performance curves


Muffin Monster grinder cutters

Tooth count Thickness Material
7-tooth 11 mm Hardened alloy steel
11-tooth 8 mm Hardened alloy steel
17-tooth Wipes Ready® 11 mm Hardened alloy steel

Muffin Monster grinder materials

Part Material
Housings Ductile Iron
Cutters Hardened alloy steel
Shafts Hardened alloy steel
Mechanical seals Tungsten carbide faces
Gaskets Viton

Dimensions (mm)



Standart dimensions2, mm


Inline model

Flow rate1 , m3/h

Head drop, mm

A (IP55)

A (IP68)



Approximate net weight1- kg

30005-0012 141 290 1307 1411 305 600 186
30005-0018 223 405 1456 1560 457 749 211
30005-0024 311 405 1602 1706 609 895 236
30005-0032 477 445 1799 1903 813 1092 263
30005-0040 686 495 2002 2106 1016 1295 295
30005-0060 1277 760 2474 2720 1524 1813 383

1 Flow based on optimum channel conditions. Consult factory for analysis of application

2 Drive dimensions are a maximum based on a unit with a 4.0 kW motor.

30005 Muffin Monster grinder model coding

Product family
Solids reduction sewage grinder Q                          
Grinder family 30K Muffin Monster   3                        
Grinder configuration New unit with motor (specified separately)     2                      
  Monster Renew cutter cartridge     E                      
  Monster Renew cutter cartridge with spool     F                      
Stack height
300 mm (12 inch)       K  
  450 mm (18 inch)       L                    
  600 mm (24 inch)       M  
  800 mm (32 inch)       N  
  1000 mm (40 inch)       R  
  1500 mm (60 inch)       W                    
Flange type
Not applicable         X X                
Cutter material Alloy steel             1              
Cutter 7-tooth, 11 mm thick               C 4          
  11-tooth, 8 mm thick               F 3          
  17-tooth Wipes Ready®, 11 mm thick               W 4          
Body material & colour Cast iron blue                   S        
Seals & gaskets material Severe duty seals & Viton gaskets                     V      
Drum information Not applicable                        X X  
Drive configuration Single drive                           S
Example 30005-0024 with 11-tooth cutter Q 3 2 M X X 1 F 3 S V X X S

Muffin Monster motor assembly

Power Voltage Protection type Motor model code
2,2 kW TEFC 400V, 3-phase, 50 Hz IP55 (standard) QD1435B2M
2,2 kW TEFC 400V, 3-phase, 50 Hz IP55 for ATEX (Ex d IIC T4) QD2435B2M
2,2 kW Immersible 400V, 3-phase, 50 Hz IP68 for ATEX (Ex de IIB T4) QD3435B1M
4,0 kW TEFC 400V, 3-phase, 50 Hz IP55 (standard) QE1435B2M
4,0 kW TEFC 400V, 3-phase, 50 Hz IP55 for ATEX (Ex d IIC T4) QE2435B2M
4,0 kW Immersible 400V, 3-phase, 50 Hz IP68 for ATEX (Ex de IIB T4) QE3435B1M

Muffin Monster controller

Grinder motor type Model code for IP65 control panel enclosure  
  Powder coated mild steel material Stainless steel material
2.2 kW IP55 QL1P45XXX QL1S45XXX
2.2 kW IP68 QL2P45XXX QL2S45XXX
4.0 kW IP55 QM1P45XXX QM1S45XXX
4.0 kW IP68 QM2P45XXX QM2S45XXX