Introduction

Overhead stirrer can handle viscosities up to 70,000 mPas and features a maximum stirring capacity of 100 torque over five times higher than high-speed torque. The stirrer comes equipped with RS 232 and RS485 interface to control and document all parameters. Its microcomputer-based control system provides precise and reliable speed control. Our stirrer is designed for effective mixing of medium- to high-viscosity liquids and solid-liquid mixtures.

This magnetic stirrers is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

Our Overhead stirrer  is used for mixing high-viscosity liquids and large-volume samples in laboratories and industrial settings. It is ideal for applications in chemical synthesis, pharmaceuticals, cosmetics, food processing, and biotechnology.

Specifications

Max. Viscosity 70000 mPas
Maximum Stirring Volume(L)H2O 100 L (H2O)
Speed Range I 60 to 1200 rpm
Speed Range II 1201 to 6000 rpm
Speed Setting Accuracy 1 rpm
Speed Measurement Deviation ± 3% (when n is greater than 300rpm)
Max. Torque I 170 N·cm
Max. Torque II 34 N·cm
Timing Range 99 h 59 min 59 sec
Temperature Measuring Range - 10 to 350℃
Temperature Measurement Resolution 0.1℃
Display display
Motor Type Brushless DC motor
Stirring Element Fastening Keyless chuck
Chuck Range Diameter 0.5 to 10 mm
Hollow Shaft Inner Diameter 10.2 mm
Communication RS232 / RS485 interface
Working Status Indicator Standby (blue)
Running (green)
Alarm (red)
Protection Class IP42 | IP40
Power Consumption 150 W
Power Supply 100 to 240 V AC,50/60 Hz
Dimensions 280 × 120 × 200 mm
Packing Dimensions 710 × 520 × 500 mm
Net Weight 12 kg
Gross Weight 25 kg

Features

Precise speed control

Low maintenance

Quiet operation

Automatic timing function 

Switching between high and low speed and torque

FAQs

1. What types of applications is the Overhead Stirrer best suited for?

Overhead Stirrer is designed for the efficient mixing of medium- to high-viscosity liquids and solid-liquid suspensions. With a maximum stirring capacity of 100 liters (H2O) and the ability to handle viscosities up to 70,000 mPas, it is ideal for use in chemical synthesis, pharmaceuticals, food processing, cosmetics formulation, and biotechnology research. Its precision and torque performance make it particularly effective for mixing large-volume or thick samples.

2. How does the dual-speed range benefit users of the Overhead Stirrer ?

Overhead Stirrer features two distinct speed ranges: 60 to 1200 rpm and 1201 to 6000 rpm, enabling both high-torque, low-speed stirring for viscous materials and high-speed agitation for lower-viscosity mixing. Importantly, the low-speed mode delivers a maximum torque of 170 N•cm, which is over five times greater than the torque in high-speed mode (34 N•cm). This dual-speed system allows the user to adapt the stirring process to the material properties, optimizing efficiency and performance across a wide range of lab and industrial mixing needs.

3. How accurate is the speed and temperature control in the Overhead Stirrer ?

The Overhead Stirrer provides precise speed control with a setting accuracy of 1 rpm and a measurement deviation of only ±3% at speeds above 300 rpm. It also includes a temperature measuring function with a wide range from -10°C to 350°C and a resolution of 0.1°C, making it highly suitable for temperature-sensitive reactions. These features, combined with the integrated display, allow users to monitor and fine-tune parameters with exceptional precision.

4. What type of motor and stirring mechanism does the Overhead Stirrer use?

Overhead Stirrer is powered by a brushless DC motor, which offers long-lasting performance with minimal maintenance and quiet operation. It uses a keyless chuck system to secure stirring elements, allowing for fast, tool-free installation and a chuck diameter range from 0.5 to 10 mm. This setup provides both operational flexibility and durability, especially in high-load mixing applications.

5. How does the Overhead Stirrer ensure user safety and process monitoring?

Overhead Stirrer includes a working status indicator with color-coded lights: standby (blue), running (green), and alarm (red). This intuitive system allows users to quickly determine the operational status of the device. It also has an IP42 | IP40 protection class for environmental safety, and its built-in automatic timing function enhances control during prolonged mixing tasks. These features support safe, unattended operation in both laboratory and industrial environments.

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