OS40 Overhead Stirrers

Manufactured in China


OS40 Overhead Stirrers available in OS40-S analog with LED display or the OS40-Pro LCD digital microprocessor model


  • 40L Capacity
  • High torque
  • 50-2200rpm
  • Through-shaft design
  • 2 year warranty
  • A through-shaft design allows for easy adjustment of the impeller position
  • Large chuck diameter for many shaft types
  • Over torque protection automatically stops the motor
  • Pass through stirrer rods accepted
  • Analog speed control is displayed on the LED display (OS40-S model)

OS40-Pro LCD additional features:

  • Realtime back-lit LCD display and control. Set value and actual value can be displayed for real-time monitoring of torque and speed
  • PC control via RS232 interface, for control and documenting all measured values via PC. Parameters can be set to carry out safety monitoring
  • Accurate microprocessor stirring speed control guarantees speed precision
  • Anti-spill microprocessor control slow start up prevents sample spills

Impellers and stands are sold separately. Click here to see impeller options and other accessories.

Key Attributes 
Maximum volume (L): 40
Minimum Volume (L): N/A
Speed max (rpm): 2,200
Speed min (rpm): 50
Max temperature (◦C): N/A
Plate:  N/A
Plate material: N/A
Torque max (Ncm): 60
Controls: Digital
Timer: No
Programmable: Yes
Reverse rotation: No
Warranty (years): 2
Weight (lbs): 5.5
Dimensions Width (in): 3.3
Dimensions Height (in): 8.7
Dimensions Length (in): 7.3


Manufacturer Specifications
Maximum stirring capacity 40 Liters
Maximum torque 60Ncm
Viscosity maximum 50000mPas
Speed range 50-2200rpm
Speed display accuracy ± 3rpm
Speed display resolution ± 1rpm
Chuck diameter range 0.5-10mm
Dimensions 3.3W x 8.7H x 7.3Dinches
Motor rating input 120W
Motor rating output 100W
Weight 5.5lbs
Voltage 110-220Volts 50/60Hz, 130W

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SKU#: SCI:84020201
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