Shaft Stirrers

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Stirrers Shaft Stirrers

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Attention Thomas Scientific Customers

Due to current pandemic, lead times for PPE items are longer than what is listed on our website. Please expect shipping delays of all PPE products during this time.

  • Teras Turbine™

    Foxx Life Sciences

    Next Generation Mixing Technology from Foxx Life Sciences. The Teras Turbine™ has four mixing modes: Top Anaerobic, Top Aerobic, Full Mixing, and Bottom Mixing. Top Anaerobic is ideal for mixing of less viscous material at the top of the carboy or bottle. Top Aerobic is for adding air…

  • Thomas No. 1177M38 Impeller. Mixer. Blade. Crossed Blade. Radial Flow. High Speed. Low Viscosity. 316L SS. Electropolished. High Shear. High Vortexing. Thomas No. 1177M39 This radial flow impeller is effective for high speed, low viscosity mixing. The 50 mm (2”) diameter…

  • Thomas No. 1198F83: Stirring shaft with floating blades: The two blades that open as the speed rises generate an axial flow in the container, from the top towards the bottom. Particularly recommended for stirring in narrow-neck containers, e.g. flasks. Thomas No. 1198F84: Stirring shaft with…

  • A 10mm OD precision ground and polished stirrer shaft with our patented** Chem-Stir™ blade attachment system. Shaft (C) has been manufactured with a ring at the lower end to permit attachment of the blade (B) with a PTFE nut (D) and bolt (A). Shaft is supplied complete with PTFE nut and bolt…

  • 4 Blade PTFE agitator available with either 45 or 90 degree blade angle. For use with glass or metal shafts and is secured using a compression style fitting allowing it to positioned anywhere along the length of the shaft.

  • Polished Glass Stirrer Shafts

    Wilmad-LabGlass - SP Scienceware

    Precision ground and polished, these borosilicate glass stirrer shafts have a 10mm O.D. For use with LG-9475T bearing with PTFE bearing surface, or other bearings with a PTFE interface with the same bore. Features a side button at bottom for attachment of any of the stirrer/stirring blades (LG-9505…

  • Precision PTFE Stirrer Bearings

    Wilmad-LabGlass - SP Scienceware

    Uniquely designed and lubricant free, these precision stirrer/stirring bearings are self-aligning. The saddle O-ring provides constant force and a positive seal on the stirring rod that allows vacuum operation to as low as 1mm. Ground finish rods from other manufacturers are not recommended for use…

  • The unique design of our Tru-Stir™ stirrer shaft coupling eliminates the need to use rubber hose or universal adapters to attach your stirrer shafts to overhead stir motors. Coupling incorporates a unique helical stainless steel spring permitting up to 1/4” of offset misalignment and…

  • Scienceware® Stirrer Blades

    Bel-Art - SP Scienceware

    This strong, non-scratch and inert FDA grade, USP Class VI Teflon® PTFE blade fits all standard button-tip stirring shafts. "Long-groove" keyhole provides easy insertion into flask neck Rotates into proper position for stirring action

  • Features: UL 61010-1, CSA C22.2 and CE certified (available by request, additional cost) Filter reactors for single or multi-step reactions and filtrations in the same vessel, they also eliminate material transfers and reduce losses. Modular filter assembly can be easily detached for…

  • Stirrer Bearings


    Grease-Free PTFE stirrer bearing for use under moderate vacuum. The bearing consists of a PTFE standard taper body, Nylon compression cap, PTFE Insert/bushing and a Nylon loosening nut. The PTFE insert/bushing provides only glass and PTFE contact with the reaction. Loosening nut above the standard…

  • Stirrer blade made of 1/8" thick solid PTFE for use with both Chem-Stir™ and button style stirring shafts having a 10mm OD.

  • A 10mm precision ground stirrer shaft to fit CG-2070 through CG-2072 10mm bearings. Side button for attachment of CG-2080 or CG-2081 PTFE stirrer blades. PLEASE NOTE: THESE SHAFTS ARE NOT TO BE USED WITH ANY TYPE OF PTFE BEARING.  FOR POLISHED SHAFTS USED WITH PTFE BEARINGS SEE CG-2079.

  • A turbine type agitator, available for 19mm and 28mm shafts. 19mm six blade agitators are open in the center to allow custom positioning on drilled type or knob type 8076, 8078 & 8079 shafts. 28mm four blade agitators are supplied with a PTFE nut & bolt set for securing to 8080 shafts. Shaft is not included.

  • PTFE stirring blades for use with our button type 9524 and 9527 stirring shafts. Blades are 41mm wide x 12mm high and are designed for use in flasks 250ml and less. Match blade to shaft OD.

  • Lightweight three-blade propellers have blades that twist to achieve the desired pitch.

  • Self-aligning, lubricant free PTFE Trubore bearing or combination bearing / debris trap. Use with 8076 (19mm od) or 8080 (28mm od) polished glass stir shafts. Debris trap model prevents bearing-wear particles from contaminating the reaction vessel and has a side port for clean-out, evacuating or…

  • Assembly consists of a 10mm OD Chem-Stir™ stirrer shaft, a precision bore-bearing having a standard taper inner joint and a PTFE blade. The blade is sized to fit the listed flask capacities.

  • A superior, low melting, silicone base lubricant which liquefies at body temperature. Because of its composition, you need apply only a very thin film of Stir-Lube® to a stirring shaft to increase bearing and shaft life at least three times over that of a bearing lubricated with glycerine.…

  • High viscosity agitator, made entirely of PTFE and glass filled PTFE, provides excellent stirring at the bottom of 2L through 20L reactors, especially when heavy slurries are being mixed. Agitator attaches to stir shaft by both a compression fitting and a glass filled PTFE safety pin. Heavy…

  • Grease-Free PTFE stirrer bearing designed for use under moderate vacuum applications. The bearing consists of a threaded glass adapter having an inner joint, a set of PTFE washer style bearings, a stainless steel spring, nylon alignment ring and Celcon® compression cap. The unique design of…

  • PTFE stirrer bearing featuring a non-shedding, fully enclosed, anti-whip, chemically resistant design. Models available for 6, 8 and 10mm glass, metal or PTFE stir shafts. Can be used in slight pressure or vacuum applications. Maximum recommended speed for continuous operation is 500 rpm. Unlike…

  • Stirrer blade made of 3/16" thick solid PTFE for use with both Chem-Stir™ and button style stirring shafts having a 19mm OD.

  • Stirrer Adapter Flex Shaft 8-10mm

    DWK Life Sciences (Kimble)

    A convenient stainless steel universal joint with 5/16 inch OD shaft and polyacetal adapter connects stirrer shafts to stirrer motors. Flexible design allows connection even if alignment is not precise. Stirrer Adapter, Flex-Shaft. For 8-10 mm Shafts

  • Chuck, Flex-Grip®

    Ace Glass

    Nylon chuck for use with ACE stirring shafts or other shafts of the same dimensions. Chuck has flexible insert which allows for misalignment of shaft without danger of breakage.

  • Mixing Shafts


    Shafts are 316 stainless steel. All 3/8" (9.5 mm) dia shafts are machined on one end to accept a 5/16" (8 mm) bore diameter propeller.

  • 10mm O.D. shaft is constructed using a molding process whereas the blade is molded directly onto the PTFE coated stainless steel shaft. This makes the stirrer chemically inert, easy to clean and can be used up to 280°C. The top of the shaft has 50mm of exposed 1/4" diameter stainless steel…

  • Shaft is precision ground and polished to fit our CG-2076 and CG-2077 10mm PTFE bearings. Designed to be used with cylindrical type reactors. The straight glass blades are spaced 90° apart and angled 15°.  PLEASE NOTE: STIRRER SHAFTS ARE DESIGNED FOR COUNTER-CLOCKWISE ROTATION.

  • Propellers


    Use these three-bladed electro-polished propellers for your general-purpose mixing. Use singly or mount several on a shaft for thorough agitation. Choose marine-style propellers for your general-purpose mixing or choose turbine style for your airless mixing in deep containers. Dispersion…

  • Blade is shaped to resemble the contour of a round bottom flask. Blades are available solid or perforated. Made of 3/16" PTFE to fit 19mm OD stirrer shafts. Minimum joint size listed is the size required to allow passage of the blade.

  • Replacement components for CLS-1414 and CLS-1415 Spinner Flasks.The Complete Impeller Assembly consists of top cap, silicone liner, glass rod, compression fitting magnet holder, paddle and magnetic stir bar.

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