Description
Plastic double universal joint, Ø 8 mm, for metal shafts is a laboratory coupling element designed to compensate for angular or axial offset between a stirrer motor and the stirring shaft. Made of plastic, the double Cardan joint transmits rotary drive while accommodating misalignment that can occur during setup or continuous operation. The 8 mm diameter interface suits standard metal shafts used with overhead laboratory stirrers, providing a flexible yet secure connection that reduces mechanical stress on bearings and glassware. With a maximum torque rating of 1,3 Nm, the joint supports dependable mixing performance across chemical, pharmaceutical and research applications. This coupling from manufacturer Rettberg forms part of the stirring-coupling and quick-connect range, helping to protect both drive unit and shaft. Supplied as one piece with a net weight of 0,127 kg, it offers a practical solution for linking metal stirring shafts to laboratory stirrer drives wherever minor geometric deviations must be absorbed without loss of torque transmission.
This article is part of Stirring shafts, propellers & impellers, in Stirring, shaking & mixing.
Key features
- Pack size: 1 pc
- Type: Plastic double universal joint
- Diameter: 8 mm
- Function: Compensates angular or axial misalignment
- Max. torque: 1,3 Nm
- Technical Information Sheet:
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Questions about Stirrer coupling clamp, Ø 8 mm, double universal joint, plastic,
What is this article?
Stirrer coupling clamp, Ø 8 mm, double universal joint, plastic, is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Stirring shafts, propellers & impellers, inside Stirring, shaking & mixing, in Instruments de précision.
A shaft, a propeller or an impeller is the wetted end of an overhead stirrer. The diameter and the pitch decide whether the liquid turns over. The material, stainless steel or PTFE, decides what the liquid may be. The chuck size has to match the stirrer.
Stirring keeps a mixture uniform or helps a solid dissolve. A magnetic stirrer spins a bar inside a closed vessel. An overhead stirrer drives a shaft when the liquid is viscous or the volume is large. A vortex mixer agitates a tube. A shaker moves a whole rack or a plate. The shape of the impeller and the speed decide whether the liquid turns over or merely spins. The vessels being stirred are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stirring, shaking & mixing. The sub-category is Stirring shafts, propellers & impellers. The catalogue is Instruments de précision.
Shelves beside this one are Magnetic stirring bars, Magnetic stirrers, Stirring & mixing accessories, Homogenisers & dispersers, Shakers, rockers & rotators, Overhead stirrers and Vortex mixers.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.