Description
BOLA Magnetic stirrer coupling (P-MRK), NS 29/32, Ø 8 mm is a compact magnetic coupling engineered for PTFE-jacketed stirring shafts. It combines an encapsulated stainless-steel drive bell with ball bearings, a rotor and lower bearing in PEEK compound, and a Hastelloy® shaft holder for reliable torque transfer under laboratory conditions. The pore-free, fully welded rotor design minimises leakage paths and memory effects, while the PEEK-compound clamping screw secures the stirring shaft firmly for efficient power transmission. A ground-joint core with PTFE Combi nut (Safe-Lab) locks the conical joint securely yet allows straightforward release. The upper square drive (SW 6 mm) accepts a stirrer motor or intermediate coupling. Overall height is 145 mm, drive-bell outer diameter 50 mm, and maximum shaft insertion length 95 mm; the unit is intended for 8 mm diameter shafts and NS 29/32 joints. Compact construction keeps space requirements low. Supplied as a single piece from manufacturer Bohlender, this coupling supports sealed stirring setups in chemical and process laboratories where PTFE-coated shafts are preferred.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Ground joint: NS 29/32
- Shaft diameter: 8 mm
- Height: 145 mm
- Drive bell outer diameter: 50 mm
- Max shaft insertion length: 95 mm
- Technical Information Sheet:
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Questions about BOLA Magnetic Stirrer Heads (P-MRK), NS 29/32, Ø 8 mm consisting of: Driving bel
What is this article?
BOLA Magnetic Stirrer Heads (P-MRK), NS 29/32, Ø 8 mm consisting of: Driving bel is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Stirring & mixing accessories, inside Stirring, shaking & mixing, in Lab instruments.
Stirring accessories are the bosses, the retort clamps and the spare knobs that hold an overhead stirrer over the vessel. The stand has to carry the motor's mass, not only the flask's.
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 & mixing accessories. The catalogue is Lab instruments.
Shelves beside this one are Magnetic stirring bars, Stirring shafts, propellers & impellers, Magnetic stirrers, 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. Delivery across the EU, two to five days if in stock. 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.
