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NW20 Electric mixer




Product Introduction

 NANBEI offers the ideal overhead stirrer for your stirring and mixing tasks in the lab - for lower to high viscosities. NANBEI overhead stirrers effortlessly process stirring quantities of up to 200 liters. NANBEI lab stirrers and overhead stirrers stand out due to their indispensable features, including an electronic safety circuit, a digital display, two speed ranges, and a controlling option via the lab software Labworldsoft. A broad spectrum of stirring tools is the key to successful mixing.

Functionality, safety, and longevity are the main goals in the development of NANBEI's overheard stirrers.


Find your ideal NANBEI stirrer by clicking on the adjacent categories.


Package includes

  • RW 20 digital
  • R 1826 Plate stand  FREE
  • R 182 Boss head clamp  FREE
  • R 1342 Propeller stirrer, 4-bladed  FREE

The bestseller in the laboratory: 

  • With digital display
  • Robust, slimline, ergonomic design
  • Technical improvements on the trusted RW 20 series designs
  • With constant power-drive
  • Two speed ranges for universal use from 60 - 2.000 rpm
  • Push-through agitator shafts (only when stationary)
  • For stirring quantities of up to 15 l (H2O)


Stirring quantity max. per stirring position (H2O)

20 l

Motor rating input

70 W

Motor rating output

35 W

Speed display


Speed range

60 - 2000 rpm

Viscosity max.

10000 mPas

Output max. at stirring shaft

26 W

Permissible ON time

100 %

Torque max. at stirring shaft

150 Ncm

Torque max. at stirring shaft at 60 1/min (overload)

300 Ncm

Torque max. at stirring shaft at 100 1/min

150 Ncm

Torque max. at stirring shaft at 1.000 1/min

24 Ncm

Speed range I (50 Hz)

60 - 500 rpm

Speed range II (50 Hz)

240 - 2000 rpm

Speed range I (60 Hz)

72 - 600 rpm

Speed range II (60 Hz)

288 - 2400 rpm

Speed control


Setting accuracy speed

1 ±rpm

deviation of speed measurement

30 ±rpm

Stirring element fastening


Temperature display


Chuck range min. diameter

0.5 mm

Chuck range max. diameter

10 mm

Hollow shaft, inner diameter

10.5 mm

Hollow shaft (push-through - when stopped)


Fastening on stand

extension arm

Extension arm diameter

13 mm

Extension arm length

160 mm

Torque display


Nominal torque

1.5 Nm



Dimensions (W x H x D)

88 x 294 x 212 mm


3.1 kg

Permissible ambient temperature

5 - 40 °C

Permissible relative humidity

80 %

Protection class according to DIN EN 60529

IP 20

RS 232 interface


USB interface


Analog output



220 - 240 / 100 - 115 V


50/60 Hz

Power input

72 W


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  • Mobile: +86 15890668062
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