Benchmark OS Series Overhead Stirrers deliver high torque, quiet operation, and digital precision for low to medium viscosity mixing. Designed for reliability and ease-of-use, both the OS20L and OS40L models include a full stand and 4-arm stainless steel propeller, ready for use right out of the box.
Features:
- High-performance DC brushless motor for quiet, maintenance-free mixing
- Digital microprocessor control ensures precise speed regulation (30–2200 RPM)
- Bright LCD screen displays real-time speed and run-time status
- Overload and obstruction sensors automatically stop operation for protection
- Tool-free chuck (0.5–10 mm) for easy shaft installation
- Protective splash cover resists corrosion around drive connection
- Includes complete support stand and mounting hardware
- Two capacity options: 20L or 40L
- 2-Year Manufacturer’s Warranty
What's Included:
- Benchmark OS20L or OS40L Overhead Stirrer
- Stirrer Stand
- 4-Arm Stainless Steel Propeller
- Power Cord
- Operator’s Guide
- Manufacturer’s Documentation
- 2-Year Warranty
Specifications
| Model | Mixing Capacity | Max Torque | Max Viscosity | Speed Range | Input / Output Power | Chuck Diameter | Motor Type | Protection | Dimensions (WxDxH) | Weight | Electrical |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OS20L | 20L | 40 N·cm | 10,000 mPas | 30–2200 RPM | 60W / 50W | 0.5–10 mm | DC Brushless | IP42 | 7.3 x 3.3 x 8.7 in | 2.6 kg | 100–240V, 50/60Hz |
| OS40L | 40L | 60 N·cm | 50,000 mPas | 30–2200 RPM | 120W / 100W | 0.5–10 mm | DC Brushless | IP42 | 18.6 x 8.3 x 22.0 cm | 2.8 kg | 100–240V, 50/60Hz |