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Geared Mixer with 16" Impeller & 1.1kW, 415 VAC Motor

Geared Mixer with 16 inch impeller and 1.1kW 3 phase motor

GMW31 is a geared mixer with a 16" Impeller, driven from a worm gearbox with a 415v 1.1kW motor.  The model pictured is the GMW31-1500-2-900-140 mixer, fitted with 2 x 16" impellers and a total shaft length of 1.5 metres.

GMW31 Geared Mixer Introduction

The GMW31 is an industrial geared mixer with a 16 inch impeller and a huge 1.1kW motor, designed as a geared mixer for continuous operation in many liquid mixing applications.   These include for viscous solutions, and other slow speed stirring and agitation applications in the process control, water treatment and effluent treatment sectors.

The GMW31 has been used in pH neutralisation applications, the manufacture and usage of effluent treatment chemicals, and in process applications for solutions with a viscosity of up to 10'000 CPS.

The GMW31 is fitted as standard with a 3 phase 415V 1.1kW AC motor.  Considering the size of the motor in use, we don't offer a single phase version of the GMW31.  If you have an application where the only available power is from a 110V, 240V supply or where compressed air is available, then please don't hesitate to get in touch as we may be able to offer alternative solutions.

The standard impeller has a low shear co-efficient, making it suitable for flocculent mixing and other applications, and is driven with a speed of 190RPM. Other output speeds are available, making it ideal for use on a range of Dosing Tanks depending upon the duty, liquid type and viscosity.

GMW31 Geared Mixer with 16 inch Impellers

The standard GMW31 utilises a single 16 inch impeller which is used to create a continuous stirring motion within the tank or vessel.  This ensures that the solution is under constant agitation from the industrial stirrer, making it ideal for keeping lime solutions in suspension.  It also works well for other slow speed stirrer applications, such as improving the contact time and reaction potential when used in the agitation of reagent, mixing polymers or the make-up of effluent treatment chemicals.

The 16 inch impeller is not tapered to ensure the industrial stirrer generates a large contact area to provide both a better contact area for more efficient stirring and a reduced shearing coefficient when used as a flocculant mixer.

In addition to fitting a single 16" impeller, the GMW31 is designed to be fitted with additional impellers, depending upon the nature of the vessel and liquid under agitation.  If you're unsure of the requirements for your application, please don't hesitate to get in touch to discuss your specific requirements.

GMW31 Worm Gearbox Mixer

The 16 inch impellers are directly driven by the worm gearbox.  The shaft is machined at our production facility in the Stafford, UK, to ensure that it is held securely in place within the worm gearbox itself, without a coupling.  This enables us to offer a wide variety of reduction ratios including the 95RPM and 190RPM versions.

In addition to offering a number of gearbox ratio options, we machine the shafts and impellers in house, allowing the shaft length to be manufactured to specification.

Our 3 blade flat 16 inch impeller is designed to optimise the stirring capability of the mixer for a number of different applications, thus making the GMW31 suitable for use as a geared mixer for viscous solutions as well as for flocculent or polymer makeup.

Geared Mixer GMW31 with 1.1kW 3 Phase Motor

The standard GMW31 is fitted with a TEFC (Totally Enclosed Fan Cooled)  motor and manufactured to IP55 specifications.  The standard motor is a 415 V three phase 1.1kW AC motor.  We also offer a 380 Volt motor and flameproof motors.

GMW31 Chemically Resistant Geared Mixer

For use with process chemicals, we offer the GMW31 with wetted parts (shaft and 400mm impeller,  as well as any additional impellers) coated in PVC.  This makes the mixer suitable for mixing applications where the process chemical reacts with 316 stainless steel.

The shaft and 16" impeller are coated as a single piece to ensure that any fastenings are resistant to the reagents being used in the process.

Any additional impellers are also coated with PVC to ensure that during the process, the whole wet end of the geared mixer offers greater chemical resistance.

We strongly recommend when considering a chemically resistant high speed mixer that the materials being used are compatible with PVC. 

GMW31 Geared Mixer Features & Benefits

The GMW31 is a geared mixer, suitable for a wide variety of applications and unlike our High Speed Industrial Mixers, it doesn't have to be contained within a tank, where the height of the liquid covers the impeller.

Designed for industrial duties, the GMW31 has been used as an industrial stirrer for viscous solutions as well as for other process applications.  The GMW31 is commonly fitted with additional impellers to ensure an even agitation can be achieved with highly viscous solutions, or where the vessel is large or unusually shaped.  It is ideal with a single impeller for flocculant make-up as well as a geared mixer for pH neutralisation or other process control applications.

Manufactured in house at our Stafford facility, the GMW31 is available with a number of customised options, depending upon the duty required.  This includes supplying the slow speed mixer with food grade lubricant, additional impellers, a 3 phase 380 V AC motor, flameproof motor, or with a chemically resistant coating.

The GMW31 can be fitted with a second impeller, although for heavier duties we offer our GMW4 and GMW41 geared mixers, fitted with 20inch / 500mm impellers.

The 16 inch impeller on the GMW31 offers efficient mixing and is designed for larger vessels.  It is suitable for use on viscous solutions, depending upon the level of viscosity and volume.  If you're unsure on the precise mixer to suit your application, please don't hesitate to get in touch.

The slow speed geared mixer GMW31 is of proven design and construction, requiring minimal preventive maintenance for efficient low shear mixing.   It is suitable for a wide range of applications including mixing water treatment chemicals and for mixing in process applications.

GMW31 Geared Mixer Specifications

  • Specifications


    Geared Industrial Mixer with 16" impeller and 1.1kW motor - version pictured is fitted with 2 x impellers

    Model Number:- GMW31

    Voltage:- 3 Phase 415 VAC

    Power:- 1.1kW or 1.48 HP

    Speed (standard):- 190 RPM

    Flange Diameter:- 200mm

    Hole Diameter:- 4 x 14mm

    PCD:- 215mm

    Plate Hole:- 182mm

    Propellor Diameter:- 400mm / 16 Inch

    Propellor Type:- Flat Bladed Impeller

    Materials Of Construction:- 316 stainless steel (Optional PVC Coating)

  • Ordering Information

    Model NumberMotorShaft LengthImpeller SpeedWetted PartsImpellers
    GMW31-XX-95 1.1kW, 415 Volt AC XX = shaft length in mm 95 RPM 316 Stainless Steel 1 x 16 inch
    GMW31-XX-140 1.1kW, 415 Volt AC XX = shaft length in mm 140 RPM 316 Stainless Steel 1 x 16 inch
    GMW31-XX-95-EVA 1.1kW, 415 Volt AC XX = shaft length in mm 95 RPM Plastic Coated 316 SS 1 x 16 inch
    GMW31-XX-140-EVA 1.1kW, 415 Volt AC XX = shaft length in mm 140 RPM Plastic Coated 316 SS 1 x 16 inch
    GMW31-XX-95-2 1.1kW, 415 Volt AC XX = shaft length in mm 95 RPM 316 Stainless Steel 2 x 16 inch
    GMW31-XX-140-2 1.1kW, 415 Volt AC XX = shaft length in mm 140 RPM 316 Stainless Steel 2 x 16 inch
    GMW31-XX-95-EVA-2 1.1kW, 415 Volt AC XX = shaft length in mm 95 RPM Plastic Coated 316 SS 2 x 16 inch
    GMW31-XX-140-EVA-2 1.1kW, 415 Volt AC XX = shaft length in mm 140 RPM Plastic Coated 316 SS 2 x 16 inch

    For geared or slow speed mixers with multiple impellers please call to advise on spacing requirements.

    PTFE coating is also available for use with concentrated chemical reagents - please speak with our friendly sales team for more information.


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