PRODUCT CATEGORY

RW 28 Digital Overhead Stirrer

Ideal for use in high throughput labs and pilot plants, the RW 28 digital Overhead Stirrer has an 80-liter capacity and a powerful mechanically controlled two-stage motor for high speed and high torque mixing operations. The first stage can be used for low-speed, high viscosity mixing by providing an impressive 900 Ncm of torque. The second stage allows for high-speed stirring of lower viscosity at a speed of up to 1,400 rpm. A self-locking temperature limiter prevents the motor from overheating.
  • For basic stirring operations of highly viscous liquids 
  • 80-liter volume capacity 
  • Digital speed display and constant power-drive
  • Self-locking temperature limiter protects stirrer from overheating
  • Infinitely adjustable speed with two speed ranges
  • Motor overload protection for increased safety
  • Error code display for easy troubleshooting
  • Quiet operation
  • Optional stirring shaft protection and clamping fixture for securing bowls 
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Specification
Stirring quantity max. (H2O) [l] 80
Motor rating input [W] 220
Motor rating output [W] 90
Speed display scale
Speed range [rpm] 60 - 1400
Viscosity max. [mPas] 50000
Output max. at stirring shaft [W] 90
Permissible ON time [%] 100
Torque max. at stirring shaft [Ncm] 900
Torque max. at stirring shaft at 60 1/min (overload) [Ncm] 1144
Torque max. at stirring shaft at 100 1/min [Ncm] 900
Torque max. at stirring shaft at 1.000 1/min [Ncm] 86
Speed range I (50 Hz) [rpm] 60 - 400
Speed range II (50 Hz) [rpm] 240 - 1400
Speed range I (60 Hz) [rpm] 72 - 480
Speed range II (60 Hz) [rpm] 288 - 1680
Speed control stepless
Stirring element fastening chuck
Chuck range min. diameter [mm] 1
Chuck range max. diameter [mm] 10
Hollow shaft, inner diameter [mm] 10.5
Hollow shaft (push-through ¿ when stopped) yes
Fastening on stand extension arm
Extension arm diameter [mm] 16
Extension arm length [mm] 145
Torque display no
Nominal torque [Nm] 9.0
Dimensions (W x H x D) [mm] 123 x 364 x 252
Weight [kg] 7.4
Permissible ambient temperature [°C] 5 - 40
Permissible relative moisture [%] 80
Protection class according to DIN EN 60529 IP 42
RS 232 interface no
Analog output no
Voltage [V] 220 - 240 / 115 / 100
Frequency [Hz] 50/60
Power input [W] 220