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Caframo Ultra Torque Stirrer - BDC1850

  • SKU CS-1740004
  • MPN: BDC1850
  • Availability: In Stock

Available Options

  • $1,787.79

Caframo’s ultra torque stirrers are designed and engineered specifically to meet the continuous demands of heavy industrial use. The heart of the BDC line is the high performance Brushless Direct Current (BDC) motor. A unique two speed transmission provides incredible amounts of power. Caframo stirrers are quiet, dependable, maintenance free and ideal for continuous use. Included in each purchase: Overhead stirrer motor, chuck, chuck guard, chuck key, support rod, power cord, manual in four languages (English, French, Spanish and German), calibration certificate and three year warranty. Expect to be impressed!

  • Ambient Temperature Operation

    5-40 ºC (41-104ºF)
  • Approvals

    CSA listed to Canada and US standards
  • Chuck Guard

  • Chuck Maximum Shaft Diameter

    10 mm (⅜”)
  • Frequency

    50/60 Hz
  • Housing

    Cast Aluminum
  • Output Power

    150 Watts (⅕ hp)
  • Relative Humidity Operation

  • Rotation Direction

    Clockwise only
  • Speed - High Range

    360-1800 rpm
  • Speed - Low Range

    12-360 rpm
  • Speed Accuracy

    +/- 1 rpm
  • Speed Display

  • Through Shaft

  • Timer

  • Torque Accuracy

    +/- 12 Ncm (+/- 1 in-lb)


    568 Ncm (50 in-lbs = 800 in-oz)
  • Torque Maximum - High Speed

    114 Ncm (10 in-lbs = 160 in-oz)
  • Torque Maximum - Low Speed

    568 Ncm (50 in-lbs = 800 in-oz)

    90 000 mPa·s (90 000 cP)
  • Voltage

    120 volt/230 volt
  • Volume Maximum

    80 L (21 US Gallons)
  • Warranty

    3 years
  • Weight

    5 kg (11 lb)


    12-1800 rpm
Features & Benefits


  • Brushless DC motor
  • Totally enclosed metal housing
  • Electronic control
  • Smart two-speed transmission
  • Through shaft
  • Chuck guard included


  • High efficiency (less heat)
  • Protection from dust and product splashing
  • Precise speed adjustment and speed maintenance as viscosity changes
  • Transmission selects high-torque or high-speed range
  • Easy impeller adjustment saves time
  • Safely encloses spinning chuck to protect user
  • Protects chuck from splashes
  • CS-1740083 Overhead stirrer motor 220-240 volts, 50/60 Hz. Includes support rod, chuck, chuck key, chuck guard, Australia cord set, and printed manual.
  • CS-1740084

    Overhead stirrer motor 220-240 volts, 50/60 Hz. Includes support rod, chuck, chuck key, chuck guard, UK and EU cord sets, and printed manual.

  • CS-1740004

    Overhead stirrer motor 120 volts, 60 Hz. Includes support rod, chuck, chuck key, chuck guard, grounded North American power cord, and printed manual.

Downloads & Videos


  • I have a BDC3030 (or BDC1850, or BDC6015) and I notice that when I turn it on it does not start mixing right away. Why is this?

    Caframo stirrers are designed with safety in mind. When the high torque stirrers are turned on they start in “pause”. To start mixing, press the “pause” button. this allows the user to always be in control of the mixing.

  • What does it mean when the overload LED lights up (BDC1850, BDC3030, BDC6015) or “OL” is displayed (BDC2002, BDC2010)?

    The stirrer is mixing something thicker than it is intended for and has shut down so that the motor is protected. Turn the power off, reduce the load and turn the power back on to continue operations. Refer to the owners manual for more information.

  • What maintenance is required for Caframo stirrer owners?

    Caframo overhead stirrers are maintenance free. All are manufactured with a brushless DC motor which is efficient and has a long very long life. There are no brushes that need replacing. The only wear parts are the belts of the transmission of the BDC1850, BDC303 and BDC6015.

  • Do Caframo stirrers maintain speed (rpm) if the viscosity changes?

    Yes. Caframo stirrers are digitally controlled. The speed is kept constant with continuous feedback to the motor. The set speed is maintained as the solution viscosity changes.

  • I have a need for a stirrer with a digital readout and the ability to maintain constant stirring speed despite any voltage fluctuations. Can a Caframo overhead stirrer be used?

    All of our stirrers maintain speed as viscosity changes. The power supply on the BDC2002 and BDC2010 is a universal voltage power supply which means a fluctuation in voltage will not hinder the operation of the stirrer.

  • Are Caframo stirrers explosion proof?

    All Caframo stirrers are built with a brushless DC (BDC) motor which is sparkless. Although this is the case, Caframo stirrers are not deemed intrinsically safe (or explosion proof) as they have not been tested and approved for operation in Class I, Div II requirements.

  • Which Caframo overhead stirrer models display torque?

    The high torque overhead stirrer models BDC1850, BDC3030, and BDC6015 all display torque when the display button is pressed on the keypad. Torque is displayed in N-cm.

  • How do I convert between N-cm, in-lb and in-oz?

    The conversions are as follows: in-lb to in-oz: multiply by 16 in-lb to N-cm: multiply by 11.36 N-cm to in-oz: multiply by 1.416 To convert the reverse, divide by the same numbers.

  • Are Caframo stirrers calibrated?

    The BDC1850, BDC3030 and BDC6015 are calibrated for torque and speed. Calibration certificates are shipped with each stirrer.

  • 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.

  • 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).

  • What shaft diameter will a Caframo chuck accept?

    The same sized chuck is used for all Caframo overhead stirrers with the exception of the BDC250 Petite. The chuck will accept a shaft from 5 mm to 10 mm (3/16” to 3/8″). Shafts are typically 9.5 mm (3/8″) or 8 mm (5/16”) in diameter. The BDC250 Petite chuck will accept a 6 mm (0.24”) shaft.

  • What is the outer diameter of the motor output shaft (where the chuck attaches)?

    Caframo overhead stirrers have a motor shaft outer diameter of 0.511” (13 mm). This is just slightly larger than a 1/2”.

  • What are the A110 and A210 stand bases and A120 clamp made of?

    The stand bases and clamp are cast zinc-aluminium and painted with a chemical resistant epoxy.

  • Who sells stirrers?

    Caframo overhead stirrers are sold worldwide by distributors. Click on “Distributor Locator” for our listing of Canadian, American, Mexican and International Distributors.

  • Can I buy directly from Caframo?

    Caframo overhead stirrers are sold worldwide by distributors. Click on “Distributor Locator” for our listing of Canadian, American, Mexican and International Distributors.

  • Do you drop ship?

    Yes. Caframo stirrers and accessories are shipped from stock.

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