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R16 overhead stirrer R50D overhead stirrer R18 overhead stirrer

CAT Powerful Overhead Mixers and Stirrers

Overhead stirers are stand-mounted stirring motors with adjustable chucks to fit stainless steel paddles.
The stainless steel paddles are interchangable and have various blade types being suitable for different applications.
These stirrers are suitable for general mixing at speeds up to 2000rpm and for batch sizes up to 200 litres depending on the drives power.
(For high speed mixing including emulsions and very fine dispersion please see our homogeniser range.)

CAT have been manufacturing Laboratory equipment in Germany since 1976, and all products are
still built in Germany to high quality German Standards and are sold with a 2 year warranty.

overhead stirring
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Overhead Stirrer Package Offers

DRIVE + STAINLESS STEEL STIRRING PADDLE + STAND

R18-PCK General purpose R18 drive motor (18Ncm) variable speed 100 - 2000rpm
suitable for volumes up to 20L*.
Stainless Steel Paddle 500mm long x 10mm diameter staft with either 70mm flat
blade paddle (High viscosity) OR 70mm propeller blade (low - medium viscosity).
High quality pedestal stand and clamp.
£525.00 Exc VAT/Delivery
R50-PCK General purpose R50 drive motor (50Ncm) variable speed 50 - 1600rpm
suitable for volumes up to 100L*.
Stainless Steel Paddle 500mm long x 10mm diameter staft with either 70mm flat
blade paddle (High viscosity) OR 70mm propeller blade (low - medium viscosity).
High quality pedestal stand and clamp.
£620.00 Exc VAT/Delivery
R50D-PCK General purpose R50D drive motor (50Ncm) with LCD Speed display, variable
speed 50 - 1600rpm suitable for volumes up to 100L*.
Stainless Steel Paddle 500mm long x 10mm diameter staft with either 70mm flat
blade paddle (High viscosity) OR 70mm propeller blade (low - medium viscosity).
High quality pedestal stand and clamp.
£695.00 Exc VAT/Delivery
R100C-PCK Heavy Duty R100C drive motor (150Ncm) variable speed 40 - 2000rpm
suitable for volumes up to 200L*. LCD display which shows speed/torque or time.
Stainless Steel Paddle 500mm long x 10mm diameter staft with either 70mm flat
blade paddle (High viscosity) OR 100mm propeller blade (low - medium viscosity).
Heavy duty U-Stand with 1m high rod for large volume vessel and heavy duty block clamp.
£1300.00 Exc VAT/Delivery
* Batch size given is for water equivelent viscosity - higher viscosities will reduce maximum batch size.
** Other packages/paddles available on request **


Overhead Stirrer Drives

R100C Heavy duty laboratory and pilot plant stirrer with LCD display

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
Analogue and RS232 PC interfaces
LCD showing speed, torque or time
Speed Range: 40 - 2000 rpm
Maximum volume: 200L (water equivalent viscosity)
Maximum Viscosity: 60000mPas
Torque: 150Ncm
Dimensions: 78 x 200 x 230mm (WxDxH)
Weight:4.7kg
Wattage: 300w

Price: £1125.00 excluding VAT/Delivery
CAT R100C stirrer
R100CL Heavy duty laboratory and pilot plant stirrer with LCD display

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
Analogue and RS232 PC interfaces
LCD showing speed, torque or time
Speed Range: 20 - 1100 rpm
Maximum volume: 200L (water equivalent viscosity)
Maximum Viscosity: 70000mPas
Torque: 250Ncm
Dimensions: 78 x 200 x 230mm (WxDxH)
Weight:5kg
Wattage: 300w

Price: £1125.00 excluding VAT/Delivery
CAT R100CL stirrer
R100CT High torque laboratory and pilot plant stirrer with LCD display

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
Analogue and RS232 PC interfaces
LCD showing speed, torque or time
Speed Range: 10 - 500 rpm
Maximum volume: 200L (water equivalent viscosity)
Maximum Viscosity: 100000mPas
Torque: 600Ncm
Dimensions: 78 x 200 x 230mm (WxDxH)
Weight:5kg
Wattage: 300w

Price: £1395.00 excluding VAT/Delivery
CAT R100CT stirrer
R100SD High power laboratory stirrer with LCD speed display

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
LCD showing speed
Speed Range: 40 - 2000 rpm
Maximum volume: 200L (water equivalent viscosity)
Maximum Viscosity: 60000mPas
Torque: 100Ncm
Dimensions: 78 x 200 x 230mm (WxDxH)
Weight:4.6kg
Wattage: 300w

Price: £950.00 excluding VAT/Delivery
CAT R100SD stirrer
R60D-PC Brushless compact laboratory stirrer with LCD speed display

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
LCD showing speed
RS232 PC control
Speed Range: 20 - 800 rpm
Maximum volume: 100L (water equivalent viscosity)
Maximum Viscosity: 50000mPas
Torque: 60Ncm
Dimensions: 68 x 165 x 130mm (WxDxH)
Weight:1.3kg
Wattage: 60w (24VDC)

Price: £980.00 excluding VAT/Delivery
CAT R60DPC stirrer
R20D-PC Brushless compact low torque laboratory stirrer with LCD speed display

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
LCD showing speed
RS232 PC control
Speed Range: 20 - 800 rpm
Maximum volume: 30L (water equivalent viscosity)
Maximum Viscosity: 10000mPas
Torque: 30Ncm
Dimensions: 68 x 165 x 130mm (WxDxH)
Weight: 1.3kg
Wattage: 60w (24VDC)

Price: £745.00 excluding VAT/Delivery
CAT R20D-PC stirrer
R50D General purpose laboratory stirrer with LCD speed display

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
Speed Range: 50 - 1600 rpm
Maximum volume: 100L (water equivalent viscosity)
Maximum Viscosity: 30000mPas
Torque: 50Ncm
Dimensions: 65 x 200 x 120mm (WxDxH)
Weight: 2.3kg
Wattage: 120w

Price: £POA excluding VAT/Delivery
CAT R50D stirrer
R50 General purpose laboratory stirrer

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
Maximum volume: 100L (water equivalent viscosity)
Maximum Viscosity: 30000mPas
Torque: 50Ncm
Dimensions: 65 x 200 x 120mm (WxDxH)
Weight: 2.3kg
Wattage: 120w

Price: £445.00 excluding VAT/Delivery
CAT R50 stirrer
R18 General purpose laboratory stirrer

Adjustable 10.5mm chuck with hollow shaft pass through
Soft start & stop
Maximum volume: 20L (water equivalent viscosity)
Maximum Viscosity: 8000mPas
Torque: 18Ncm
Dimensions: 65 x 200 x 120mm (WxDxH)
Weight: 2.2kg
Wattage: 120w

Price: £420.00 excluding VAT/Delivery
CAT R18 stirrer
R16 Brushless compact low torque laboratory stirrer

6mm fixed size chuck
Speed Range: 50 - 1000 rpm
Maximum volume: 10L (water equivalent viscosity)
Maximum Viscosity: 100mPas
Torque: 30Ncm
Dimensions: 67 x 105 x 121mm (WxDxH)
Weight: 0.7kg
Wattage: 25w (24VDC)

Price: £345.00 excluding VAT/Delivery
CAT R16 stirrer
Prices above for drive motors only excluding VAT and delivery.
* Batch size given is for water equivelent viscosity - higher viscosities will reduce maximum batch size.
For more information email us now.


Stainless Steel Stirrer Paddles

8B009508 Stainless Steel Blade Paddle

Suitable for medium - high viscosity, creates tangential flow
with low turbulence and low shearing.

Blade Width: 70mm Shaft Length: 500mm Shaft Diameter: 10mm

Price: £61.00 excluding VAT/Delivery
Blade stirring paddle
8B009504 Stainless Steel Blade Paddle

Suitable for medium - high viscosity, creates tangential flow
with low turbulence and low shearing.

Blade Width: 70mm Shaft Length: 400mm Shaft Diameter: 8mm

Price: £55.00 excluding VAT/Delivery
Blade stirring paddle
8B009114 Stainless Steel Round Blade Propeller Paddle

Suitable for low to medium viscosity, creates axial flow
drawing media from bottom to top with low shearing.

Blade Width: 100mm Shaft Length: 500mm Shaft Diameter: 10mm

Price: £61.00 excluding VAT/Delivery
Propeller stirring paddle
8B009110 Stainless Steel Round Blade Propeller Paddle

Suitable for low to medium viscosity, creates axial flow
drawing media from bottom to top with low shearing.

Blade Width: 70mm Shaft Length: 400mm Shaft Diameter: 8mm

Price: £48.00 excluding VAT/Delivery
Propeller Blade stirring paddle
8B009104 Stainless Steel Round Blade Propeller Paddle

Suitable for low to medium viscosity, creates axial flow
drawing media from bottom to top with low shearing.

Blade Width: 50mm Shaft Length: 400mm Shaft Diameter: 8mm

Price: £47.00 excluding VAT/Delivery
Propeller stirring paddle
8B009010 Stainless Steel Square Blade Propeller Paddle

Suitable for low to medium viscosity, creates axial flow
drawing media from bottom to top with low shearing.

Blade Width: 100mm Shaft Length: 400mm Shaft Diameter: 8mm

Price: £49.00 excluding VAT/Delivery
Propeller stirring paddle
8B009004 Stainless Steel Square Blade Propeller Paddle

Suitable for low to medium viscosity, creates axial flow
drawing media from bottom to top with low shearing.

Blade Width: 50mm Shaft Length: 400mm Shaft Diameter: 8mm

Price: £48.00 excluding VAT/Delivery
Propeller stirring paddle
60617-50 Stainless Steel Disolving Paddle

Suitable for low to medium viscosity, creates radial flow
with high shear to break down agglomerations
(eg powder clumps).

Blade Width: 100mm Shaft Length: 350mm Shaft Diameter: 8mm

Price: £90.00 excluding VAT/Delivery
Disolver stirring paddle
60617-60 Stainless Steel Disolving Paddle

Suitable for low to medium viscosity, creates radial flow
with high shear to break down agglomerations
(eg powder clumps).

Blade Width: 36mm Shaft Length: 350mm Shaft Diameter: 8mm

Price: £80.00 excluding VAT/Delivery
Disolver stirring paddle

Other sizes and blade types available.

Stirring motions : Axial, Radial and Tangential Flow

Stirring movements

Axial flow- creates low shear top to bottom movement of fluids and is good for stratification and suspensions.

Radial flow - creates sideways and then either up or down movement of fluids, before returning to the center. Creates high-shear for applications like emulsification. Less flow compared to axial flow.

Tangential flow - creates horizontally movement of fluid around the vessel. Best for mixing high-viscosity materials at low to medium speeds. Shear is low with little vertical flow.




CAT Stirring and Mixing Equipment


For viscous or large batch stirring

magnetic stirrers
CAT Powerful Overhead Stirrers


For high shear or fine dispersion

magnetic stirrers
CAT High Shear Homogenisers


For heated and gentle stirring

magnetic stirrers
CAT Magnetic Hotplate Stirrers


Other mixing types


Shakers, Roller & Vortex Mixers
CAT Shakers, Roller and Vortex Mixers





Last modified 29/03/21