THREE-ONE MOTOR LABORATORY STIRRERS
Accessories that make your Three-One Motor safer and more convenient to use. For pricing, orders, and questions, please contact us.

A stainless-steel drill chuck. If you need a chuck handle to tighten the agitating shaft, the standard hand-tightened chuck can be replaced with this type. Please specify when ordering.

A double muff carefully designed as a holder for Three-One Motors. It holds poles from φ16 mm to φ21 mm at the correct angle. The knob screws are shaped for easy tightening and hold securely with little force.

On a Three-One Motor the agitating shaft passes through the drive shaft. Attaching this stopper to the top of the through-shaft prevents it from dropping unexpectedly. We strongly recommend using the stopper especially with glass vessels such as beakers.

The key feature is the tapered joint. The seal between the flask and the PTFE part is closed tightly by twelve thin fins, enabling reduced-pressure agitation at a high vacuum of 10-3 or better. The shaft joint seal is a gland-packing design with a PTFE cup seal over an O-ring.


The Three-One Motor's hand-tightened chuck is dedicated to φ8 mm shafts. To use φ2 mm, φ4 mm, or φ6 mm shafts, replace the collet. A φ5 mm version is also available for the steel cores common in PTFE-coated blades.

A chuck cover for safer agitation work. When looking into the vessel, hair can get caught in the rotating chuck. This cover encloses the rotating chuck, making operation much safer.

A large retrofittable safety cover that encloses not only the chuck but also the upper drive shaft. The acrylic cover keeps the operation visible, and its hinged design allows stress-free blade changes. Compatible with the BLW, BLh, BL, Ex, and EP Series (except BLW3000).

Attached to the agitating shaft, it catches deposits from the chuck area so they do not fall into the vessel.
Orders & inquiries
For pricing, quotations, and compatibility questions, please contact us. See also the Three-One Motor selection guide and Agitator Blades & Shafts.