Product documentation/Overhead Stirrer - 20L & 40L

Overhead Stirrer - 20L & 40L
Documents for Overhead Stirrer - 20L & 40L, covering models USA-OS, USA-OS20-PRO and USA-OS40-PRO: a spec sheet. Last updated Oct 26, 2026.
Documents
About this product
Microprocessor PID speed control keeps rpm accurate and stable under load, while an anti-spill slow start ramps speed gradually to reduce splashing and foam formation. An LCD shows set and actual speed and torque in real time, over-torque protection automatically stops the motor, and an RS232 interface enables PC control and documentation of measured values.
- 40 to 60 N-cmMaximum Torque
- 10K to 50K cPsMaximum viscosity
- 20 to 40 LMaximum stirring volume
- 32.25 inIncluded stand height
- 5/8 inStand rod diameter
- Stable PID speed. Microprocessor PID ensures accurate, stable rpm under load.
- Anti-spill start. Slow start ramps speed gradually to reduce splashing and foam.
- Real-time monitoring. LCD shows set and actual values for speed and torque.
- Over-torque protection. Motor stops automatically when torque limits are exceeded.
- PC connectivity. RS232 interface for PC control and speed/torque documentation.
Applications: Chemical synthesis, Pharmaceutical & biotech, Academic & research, Process development
Specifications
| Performance | |
|---|---|
| Speed control | Microprocessor PID, accurate and stable rpm under load |
| Speed range | 50–2,200 rpm |
| Maximum torque | 40 to 60 N-cm |
| Maximum viscosity | 10K to 50K cPs |
| Maximum stirring volume | 20L to 40L |
| Start-up | Anti-spill slow start, gradual speed ramp |
| Over-torque protection | Automatically stops the motor |
| Operation | |
| Display | LCD, set and actual speed and torque |
| PC interface | RS232, PC control and documentation of speed/torque |
| Configurable parameters | All key parameters, for safety monitoring |
| Construction | |
| Stand | Included |
| Stand height | 32.25" |
| Rod diameter | 5/8" |
| Shaft chuck | Three-jaw self-centering design |
| Electrical | |
| Power supply | 110V 15A |
| Motor power | 50W to 100W |
| Plug | NEMA 5-15 |
| Frequency | 60 Hz |
| Dimensions and Weight | |
| Motor Dimensions | 3.3"W × 8.7"H × 7.3"D |
| Weight | 5.5lb |
From the approved spec sheet. Download the spec sheet PDF.