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Home » Products » Overhead Stirrers » RW 28 digital package

RW 28 digital package

RW 28 digital  package
RW 28 digital package
Product Code : 44
Product Description

Powerful, mechanically controlled laboratory stirrer designed for highly viscous applications for quantities up to 80 l (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. Digital speed display Infinitely adjustable speed in two speed ranges Push-through agitator shafts Overload protection Error code display Robust, ergonomic design Quiet operation With constant power-drive Package: RW 28 digital (drive) R 2723 Telescopic stand R 1385 Propeller stirrer R 271 Boss head clamp

Technical Specifications

Stirring quantity max. per stirring position (H2O)

80 I

Motor rating input

220 W

Motor rating output

90 W

Speed display


Speed range

60 - 1400 rpm

Viscosity max.

50000 mPas

Output max. at stirring shaft

90 W

Permissible ON time

100 %

Torque max. at stirring shaft

900 Ncm

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

1144 Ncm

Torque max. at stirring shaft at 100 1/min

900 Ncm

Torque max. at stirring shaft at 1.000 1/min

86 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 control


Setting accuracy speed

1 ±rpm

deviation of speed measurement

10 ±rpm

Stirring element fastening


Chuck range min. diameter

1 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

16 mm

Extension arm length

145 mm

Torque display


Nominal torque

9 Nm

housing material

alu-cast coating / thermoplastic polymer

clean room qualified


explosion proofed


Noise without element

62.5 dB(A)

Dimensions (W x H x D)

123 x 364 x 252 mm


7.5 kg

Permissible ambient temperature

5 - 40 °C

Permissible relative humidity

80 %

Protection class according to DIN EN 60529

IP 40

RS 232 interface


USB interface


Analog output



220 - 240 / 115 / 100 V


50/60 Hz

Power input

220 W