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Caframo Anchor & Sweep - U044SW

  • SKU CS-1740063
  • MPN: U044SW
  • Availability: In Stock
  • $212.14

Achieve enhanced process results with the addition of silicone sweep blades to our popular U044 (CS-1740062) anchor impeller. The impeller with sweep is effective for low speed, high viscosity mixing up to 38 000 mPa∙s. The tangential flow 4 x 4 inch (100 mm x 100 mm) anchor blade is welded to an ⅜ inch  (9.5 mm) diameter shaft, all electropolished 316L stainless steel. Sweep accessory blades slide over the anchor arms, enabling the combination to scrape sides of a standard 4 L beaker as it stirs. Sweep material silicone SCX 0570 is compliant with FDA 21 CFR 177.2600. A vessel clamp is required when using this impeller. Due to the torque required for effective stirring, we recommend using only with the Caframo overhead stirrer models BDC1850 (CS-1740004) and BDC3030 (CS-1740005.)

  • Blade and Sweep Diameter

    145 mm (5 ¾”)
  • Blade and Sweep Dimensions

    150 mm x 145 mm (6″ x 5 ¾”)
  • Blade Diameter

    100 mm x 100 mm (4″ x 4”) ­anchor blade
  • Flow Pattern

  • Impeller Material

    Electropolished 316L stainless steel
  • Shaft Diameter

    9.5 mm (⅜”)
  • Shaft Length

    914 mm (36”)
  • Sweep Material

    Silicone SCX 0570
  • Weight (SW4)

    0.5 kg (1.2 lb)
  • Weight (U044SW)

    1.5 kg (3.4 lb)
Features & Benefits


  • Tangential flow
  • Electropolished 316L stainless steel
  • Blade welded to shaft
  • Viscosity range 0-38 000 mPa∙s
  • Sweeps product from vessel wall
  • Heat tolerant up to 100°C (210°F)
  • Silicone compliant for processes regulated by FDA 21 CFR 177.2600
  • Molded silicone


  • Effective for low speed high viscosity mixing
  • Chemically inert and corrosion resistant
  • One piece - quick to insert and begin mixing
  • Viscous product mixing
  • No longer requires a spatula to scrape down
  • Can be used in heated processes
  • Material approved for repeated use in food processes
  • Easily modified or customized by trimming with scissors
  • CS-1740060

    Sweep blades only, package of 6 (3 pairs)

  • CS-1740063

    U044 anchor paddle, sized 100 mm x 100 mm (4" x 4"), with two sweep blades included

Downloads & Videos


  • How do I choose a mixing impeller?

    To choose an impeller the volume of the mixture, the size of the mixing vessel and the viscosity of the mixture should be known. The diameter of the mixing blade should measure one third of the diameter of the vessel, and be placed a distance of one third the diameter of the vessel up from the bottom of the vessel. For thicker mixtures, use a square or “U” shaped anchor paddle. These paddles have more surface area to contact the thick product being mixed. Because thicker mixtures are usually mixed more slowly a paddle diameter closer to the full diameter of the vessel can be used so that the product close to the edge of the vessel is mixed. (A150, A250 are examples of square blade paddles; U022, U044, U055, U510 or A183 are examples of anchor paddles).

  • The paddle I need is not listed on your website. Can you make what I need?

    We are happy to make custom paddles. Email or fax a drawing showing the specifications you need and a quotation outlining a part number, price and delivery will be emailed or faxed back for approval.

  • What is electropolishing?

    All stainless steel impellers and blades from Caframo are electropolished. Electropolishing is an electrochemical treatment performed on stainless steel to obtain a smooth, corrosion-resistant finish. This process also passivates the stainless steel by removing elemental iron and increasing the chromium concentration on the surface and nickel just beneath. The result is a chemically inactive part. Note that the process does not coat the part. Along with the improved appearance, electropolishing provides the following benefits:

    • Reduces stress-related cracking and metal fatigue

    • Increases the life span of the part

    • Optimizes sterilization as parts are easy and quick to clean

    Electropolished parts are used in the following industries:

    • Aerospace and automotive

    • Water purification

    • Food and beverage

    • Medical

    • Petrochemical

    • Pharmaceutical and cosmetic

  • How do I reduce the vortexing I am experiencing with my propeller?

    A baffle can be used in the vessel to reduce vortexing or the stirrer can be rotated slightly in the clamp so that the mixing shaft is not perpendicular. With the impeller on an angle, the vortex is broken and the introduction of air is minimized.

  • What are all the parts I need to start mixing?

    To start mixing the following parts are needed: stirrer motor, clamp, stand and mixing impeller. Go to the “Products” section to find the stirrers and accessories available. The Caframo BDC250 Petite stirrer comes as a package. It includes the stirrer motor, integral clamp, stand, and two mixing impellers (axial and straight blade).

  • Where can I find an impeller for the 1540?

    Caframo offers impellers for the 1540, such as a 4″ prop (A354) a 6″ prop (A356) and a 10″ anchor paddle (U510). If you are looking for other impellers, contact us to discuss further.

  • Do the casters lock on the A118 stand?

    The A118 stand has four swivelling casters, two of which have brakes to solidly lock the stand in place.

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