Overhead Stirrers

Powerful Stirring


Overhead Stirrer

Do you require an all-purpose stirrer that provides the best mixing results even for very challenging applications?

Advisor - Find the right device

Our overhead stirrers enrich your lab with enhanced performance, reliability and powerful stirring for years. The Hei-TORQUE laboratory stirrers are equipped with the latest drive technology and the sealed housing protects the inside from vapour and dust.

Your lab agigator should not just be robust, but also practical. With its unique Quick-Chuck, you change impellers fast and easy without any additional tools.

Moreover, the Hei-TORQUE series provides the suitable stirring tool for every application.

The advanced VISCO JET® impellers guarantee best mixing results through its self-reinforcing flow characteristics. The VISCO JET® mixing system is capable of stirring high-viscosity liquids and gels, which conventional impellers cannot manage to stir.

Convince yourself from the quality, performance and reliability of our lab stirrers, which we exclusively develop and manufacture in Germany only.

Overhead Stirrers - Models

Hei-TORQUE Value 100

Ideal for standard stirring tasks.
Stirrer with 100 Ncm torque

Hei-TORQUE Value 200

Ideal for standard stirring tasks.
Stirrer with 200 Ncm torque

Hei-TORQUE Value 400

Ideal for standard stirring tasks.
Stirrer with 400 Ncm torque

Hei-TORQUE Precision 100

Ideal for demanding tasks which have to be reproducible and documentable.
Stirrer with 100 Ncm torque

Hei-TORQUE Precision 200

Ideal for demanding tasks which have to be reproducible and documentable.
Stirrer with 200 Ncm torque

Hei-TORQUE Precision 400

Ideal for demanding tasks which have to be reproducible and documentable.
Stirrer with 400 Ncm torque


For simple mixing tasks

Overhead Stirrers - AddOns


Precise working with an overhead stirrer depends on the right choice of the stirrer tool.

Overhead Stirrers - Accessories

Overhead Stirrers - Product Advantages

The electronic stirrers feature individual setting of the start operation, which prevents spills and splashing media. The speed ramps up slowly until your set rpm has been reached

An optional shaft guard prevents accidents

Non-sparking motors for additional safety

Important for continuous operation: the motor will be switched off if a high thermal load situation occurs to increase safety in your lab and to prevent accidents

Safe start and stop of operation via slide touch panel to avoid accidental start-up

To protect your stirrer against corrosion and short-circuits, all models comply with the protection class IP 54

Setting a rotation speed limitation prevents splashing media

Unique Quick-Chuck for immediate and convenient “one-hand” impeller changing - without tools

Opening the safety ring blocks accidental operation

An audible signal confirms a tight fit of the impeller

No more misplacing and searching for the chuck key! Immediate and convenient ”one-hand“ impeller changing with the Quick-Chuck - without any tools

RS 232 and USB interfaces allow precise documentation of process cycles

Free Hei-Control software for all Hei-TORQUE Precision models aids you with automating your process, and saves all data in electronic files

Newest motor generation for maximum power at minimum noise level below 50 dB

All stirrers maintain exact speed under changing loads

A through-shaft design allows for adjusting the impeller position to make height adjustments more convenient for you

Reduce your work time and achieve excellent mixing results in challenging high-viscosity media

A single grip allows you to re-adjust the height of your stirrer on the optional telescopic stand

The outstanding product design with intuitive touch-panel made of glass has been honored with the prestigious iF DESIGN AWARD in 2016

Reduce your maintenance costs: the sealed housing protects your stirrer from aggressive fumes, liquids and vapors to prevent internal corrosion. This results in an increased lifespan of 10 years on average while reducing maintenance and repair cost

The high torque level accounts for better mixing results in less time to reduce your process time and working hours significantly

Maintenance-free motors reduce repairs and down times significantly to ensure years of continuous operation

The unique impeller technology for demanding applications that mixes gels and other similar media in shorter times which reduces process cost and working hours

The sealed panel made of glass increases the tightness of the entire housing

Free software for all Hei-TORQUE Precision models avoids the need for additional investments

Downloads & Video


Hei-TORQUE-at-a-glance.pdf Download
Hei-TORQUE-Overhead-Stirrers-Catalog.pdf Download
Hei-TORQUE-Certificate-for-continuous-operation.pdf Download
CE-Ruehrwerke-Overhead-stirrer.pdf Download