OS20-S / OS40-S LED Overhead Stirrer
Reliable and cost-effective LED digital overhead stirrers powered by explosion-proof brushless DC motors. Delivers stable stirring from 50 to 2200 rpm for sample volumes up to 20L (OS20-S) and 40L (OS40-S).
50 – 2200 rpm Speed Range | Up to 40L Capacity | Brushless DC Motor | LED Digital Display
Key Features
- Brushless DC Motor: Maintenance-free, explosion-proof DC brushless motor ensures quiet, reliable, and spark-free long-term operation.
- Wide Speed Range: Smooth speed regulation from 50 to 2200 rpm with clear LED display of actual stirring speed.
- Anti-Stall & Overload Safety: Integrated safety circuits automatically stop motor under stall or overload conditions with LED error prompt.
- Universal Chuck: Accommodates stirring shaft diameters from 0.5 mm to 10 mm for maximum impeller compatibility.
- High Reliability: Delivers high torque and dependable continuous duty across demanding analytical workflows.
Technical Specifications
| Specification | OS20-S | OS40-S |
|---|---|---|
| Max. Stirring Quantity [H2O] | 20 L | 40 L |
| Speed Range | 50 – 2200 rpm | 50 – 2200 rpm |
| Max. Torque | 40 N·cm | 60 N·cm |
| Max. Viscosity | 10,000 mPa·s | 50,000 mPa·s |
| Motor Type | Brushless DC motor | Brushless DC motor |
| Speed Display | LED | LED |
| Overload Protection Display | LED | LED |
| Chuck Range Diameter | 0.5 – 10 mm | 0.5 – 10 mm |
| Motor Input / Output Power | 60 W / 50 W | 120 W / 100 W |
| Total Power | 70 W | 130 W |
| Voltage / Frequency | 100-240 V, 50/60 Hz | 100-240 V, 50/60 Hz |
| Dimensions (W × H × D) | 83 × 220 × 186 mm | 83 × 220 × 186 mm |
| Weight | 2.8 kg | 2.8 kg |
| Protection Class | IP21 | IP21 |
| Permissible Ambient Temp. & Humidity | 5 – 40 °C, 80% RH | 5 – 40 °C, 80% RH |
Stands & Accessories
| Cat. No. | Description | Dimensions / Details |
|---|---|---|
| 18900605 | Universal Plate Stand | 20 × 31 × 78 cm, Cast Iron Base |
| 18900497 | Grand Plate Stand (for heavy models) | 33.5 × 46.3 × 78 cm, Cast Iron Base |
| 18205388 | Universal H-Shaped Stand | Adjustable width (265 to 496 mm) × 50.5 × 78 cm |
| 18900743 | Set of Overhead Stirrer Tools | Includes 1 vertical rod, 6 stirring blades (Propeller, Paddle, Centrifugal, Flat-blade, Radial-flow, Anchor), and disassembling tool |
Note: Standard unit includes the motor head. Stands and stirring impellers can be selected based on vessel volume and fluid viscosity.
