Description
Stainless steel double universal joint, Ø 8 mm, for glass shafts is a connecting element designed to couple a stirrer drive to a glass stirring shaft while compensating for angular or axial misalignment. The double cardan construction allows continuous torque transfer when the drive axis and shaft axis are slightly offset, supporting stable operation in laboratory stirring applications that employ glass shafts. Outer diameter is 8 mm; the joint is fabricated from stainless steel and accepts a maximum torque of 3,4 Nm. Net weight is 0,19 kg. Delivered as a single piece, this Rettberg® universal joint is classified among stirring couplings and quick-connect couplings and is intended expressly for glass shafts. Country of origin is Germany. The stainless-steel build provides a corrosion-resistant interface between motor and glass shaft, making the component well suited to glassware-based mixing setups that require reliable alignment compensation without rigid coaxial mounting.
This article is part of Stirring shafts, propellers & impellers, in Stirring, shaking & mixing.
Key features
- Pack size: 1 pc
- Product type: Connecting element
- Material: Stainless steel
- Diameter: 8 mm
- Outer diameter: 8 mm
- Max. torque: 3,4 Nm
- Technical Information Sheet:
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Questions about Stirrer coupling clamp, Ø 8 mm, double universal joint, stainless steel,
What is this article?
Stirrer coupling clamp, Ø 8 mm, double universal joint, stainless steel, 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 laboratoire.
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 laboratoire.
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.