USA Lab Overhead Stirrer - 20L & 40L
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Manufacturer: USA Lab
USA Lab OS-20 & OS-40 Overhead Mechanical Stirrers – 20L/40L, 50–2200 rpm | USA Lab Accurate microprocessor speed control guarantees precision, while anti-spill slow start prevents sample splashes. The large chuck diameter accepts many shaft types, and the…
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USA Lab OS-20 & OS-40 Overhead Mechanical Stirrers – 20L/40L, 50–2200 rpm | USA Lab
Accurate microprocessor speed control guarantees precision, while anti-spill slow start prevents sample splashes. The large chuck diameter accepts many shaft types, and the LCD display shows set/actual values for real-time speed and torque monitoring.
For safety, over-torque protection automatically stops the motor. Connect via RS232 for PC control and data logging. All key parameters can be configured to support comprehensive safety monitoring on the bench.
Shaft: L = 40 cm (15.75") | D = 8 mm (0.315") | Impeller = 5 cm (1.97")
Stand (Included): 32.25" Tall | 5/8" Rod Diameter
Operate within specified viscosity and temperature ranges. Use appropriate guarding for rotating shafts.
Secure vessel and stand before stirring. Follow manufacturer safety guidance.
Why the OS-20 / OS-40 Overhead Stirrers?
- Microprocessor accuracy — precise rpm with feedback control for consistent viscosity work.
- Slow-start anti-spill — gentle ramp prevents media ejection and foaming.
- LCD set/actual display — monitor speed and torque in real time.
- Robust drive & chuck — brushless DC motor and 0.5–10 mm chuck fit many shafts.
- PC connectivity — RS232 for control and documentation; safety parameters configurable.
Technical Specifications
| Specification | OS-20 | OS-40 |
|---|---|---|
| Shaft / Impeller | L = 40 cm (15.75") | D = 8 mm (0.315") | Impeller = 5 cm (1.97") | |
| Maximum stirring capacity | 20 Liters | 40 Liters |
| Maximum torque | 40 N·cm | 60 N·cm |
| Viscosity maximum | 10,000 mPa·s (cPs) | 50,000 mPa·s (cPs) |
| Speed range | 50–2200 rpm | 50–2200 rpm |
| Speed/Torque display | LCD | LCD |
| Speed display accuracy | ± 3 rpm | ± 3 rpm |
| Speed display resolution | ± 1 rpm | ± 1 rpm |
| Chuck diameter range | 0.5–10 mm | 0.5–10 mm |
| Dimensions (W×H×D) | 3.3"W × 8.7"H × 7.3"D | 3.3"W × 8.7"H × 7.3"D |
| Motor type | Brushless DC motor | Brushless DC motor |
| Motor rating input | 60 W | 120 W |
| Motor rating output | 50 W | 100 W |
| Weight | 5.5 lb | 5.5 lb |
| Voltage/Power | 110 V, 60 Hz | 110 V, 60 Hz |
| Overload protection indicator | LED light | LED lights |
| Data connector | RS232 | RS232 |
| Protection class | IP21 | IP21 |
| Permissible ambient temperature & humidity | 5–40 °C, 80% RH | 5–40 °C, 80% RH |
FAQ
What is the USA Lab OS-20 & OS-40 Overhead Mechanical Stirrer?USA Lab OS-20 & OS-40 Overhead Mechanical Stirrers are microprocessor-controlled mixers with 50–2200 rpm ranges and brushless DC drives for precise, reliable stirring up to 20 L or 40 L.
Both models use an anti-spill slow start routine that gradually ramps speed to reduce splashing and foam formation.
Yes. An RS232 interface enables PC control and documentation of measured values (speed/torque).
Over-torque protection stops the motor automatically, LCD shows set/actual values, and parameters can be configured for safety monitoring.
All items are carefully packaged to ensure safe delivery. In the rare event that your item arrives damaged, please notify us within 3 days of receipt. We will promptly provide a replacement or issue a refund.
Please note that any damage occurring after delivery is not covered under warranty. We appreciate your understanding and your trust in our products.
Specifications
| RPM | 50-2200 rpm |
| Power | 110 V / 60 Hz |
| Max Viscosity | 5-40°C |
| Speed display accuracy | ± 3rpm |
| Warranty Term | 1 Year |
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