IKA RW-28 Overhead Stirrer

Powerful, mechanically controlled laboratory stirrer designed for highly viscous applications for quantities up to 80L (H2O). It is suitable for intensive mixing for use in laboratories and pilot plants. The stirrer comes equipped with a protection for overheating of the motor by means of self-locking temperature limiter. Additionally, to secure bowls, a stirring shaft protection and clamping fixture are optionally available.

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Simple, efficient operation

  • – Digital display
  • – Infinitely adjustable speed from 60 to 1,400rpm in two speed ranges
  • – Push through agitator shafts (only when stationary)
  • – Overload protection
  • – Error code display
  • – Robust, ergonomic design
  • – Quiet operation
  • – With constant power-drive

Technical Specifications

Stirring quantity max. per stirring position (H2O)80 l
Motor rating input220 W
Motor rating output90 W
Speed displayLED
Speed range60 – 1400 rpm
Viscosity max.50000 mPas
Output max. at stirring shaft90 W
Permissible ON time100 %
Torque max. at stirring shaft900 Ncm
Torque max. at stirring shaft at 60 1/min (overload)1144 Ncm
Torque max. at stirring shaft at 100 rpm900 Ncm
Torque max. at stirring shaft at 1000 rpm86 Ncm
Torque I max.900 Ncm
Torque II max.300 Ncm
Speed range I (50 Hz)60 – 400 rpm
Speed range II (50 Hz)240 – 1400 rpm
Speed range I (60 Hz)72 – 480 rpm
Speed range II (60 Hz)288 – 1680 rpm
Speed adjustmentstepless
Setting accuracy speed±1 rpm
Deviation of speed measurement±10 rpm
Stirring element fasteningchuck
Chuck range diameter1 – 10 mm
Hollow shaft, inner diameter10.5 mm
Hollow shaft (push-through – when stopped)yes
Fastening on standextension arm
Extension arm diameter16 mm
Extension arm length145 mm
Speed controlmechanical
Nominal torque9 Nm
Housing materialalu-cast coating / thermoplastic polymer
Noise without element62.5 dB(A)
Dimensions (W x H x D)123 x 364 x 252 mm
Weight7.5 kg
Permissible ambient temperature5 – 40 °C
Permissible relative humidity80 %
Protection class according to DIN EN 60529IP 40
Voltage220 – 240 V
Frequency50/60 Hz
Power input220 W

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