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Multi-Bowl (MBS) Spheronizer

Caleva Multi Bowl Spheronizer (MBS)

The Caleva Model MBS is a Multiple Bowl Spheronizer (MBS) suited for use on a bench top / counter top, in a formulation laboratory environment.


The MBS spheronizer offers the convenience of being able to use any of four (4) different size bowls and discs (60 / 85 / 120/ 250 mm) on a common base platform; thus allowing for the spheronization of a wide range of extrudate batch sizes (10 grams - 1 kilogram) with a single spheronizer.


Spheronization is a batch process that accepts extrudate from either the Caleva MSE extruder or the Caleva Model 20 extruder. The availability of the four (4) different size bowls and discs assures the formulator of having the correct sized bowl and disc, to spheronize the 10 gram up to 1 kilogram extrudate batch.


The compact physical size of the Caleva MBS spheronizer also makes it relatively easy to locate and operate this spheronizer inside a flexible or rigid containment isolator, when the need to work with very potent compounds is required.


When the extrudate to be spheronized for the very first time, has been produced from very expensive, very scarce, very potent ingredients, then the use of the smallest diameter bowl and disc could be utilized on the MBS common base platform, so that proof–of–concept spheronization trials can initially be conducted. Then, simply by switching to a larger diameter bowl and disc, the formulator has the ability to spheronize larger extrudate samples.


The Caleva MBS Multiple Bowl Spheronizer is ideal for use in spheronization scale–up studies because it affords the formulation or R & D department scientist(s) significant flexibility when it comes to purchasing any or all of the four (4) interchangeable bowl and disc configurations; have readily available the size that you need, when you need it; then upgrade to any or all of the other size bowls and discs on a case by case basis.


The variety of optional accessories for use with the MBS spheronizer, also  includes the Caleva DataStor – 2 TM package to monitor, record and permanently store the operating parameters: product temperature, disc speed, and power consumption.


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  • Bench top spheronizer.
  • Four (4) Interchangeable bowls and discs available.
  • Manual loading of wet extrudate.
  • Manually adjustable disc speed control.
  • Clear plastic magnetically interlocked safety cover.
  • Useful for conducting spheronization scale–up studies.
  • Single required tool for assembly / disassembly included. 
  • Simple operation.
  • Front mounted and integrated manually operated controls, LED Display, and E - Stop.
  • Pre–wired with external power cord.
  • Easy to clean.
  • Compact design requires limited space.
  • Suitable for use in combination with Caleva Model 20 Bench top screen–type extruder.
Feed Configuration: Manual loading of wet extrudate.
Nominal Overall Dimensions: 489mm W x 353mm D  x  496mm H (with 250 mm diameter bowl)
Nominal Assembled Weight:  25-45 kg (depending upon bowl /disc configuration)
Cabinet: Grained 304 SS
Contact Parts:   316 SS
Controls:  Manual,  Front mounted with: Power / Motor ON indicator light, Speed Adjustment dial, LED Display of Spheronizer Disc RPM, START / STOP pushbutton, and Top Mounted emergency E–STOP pushbutton.
Nominal Processing Capacity:
  • 1–5 g (60mm diameter bowl)
  • 5–15 g (85mm diameter bowl)
  • 10–130 g (120mm diameter bowl)
  • 100 g – 1 kg ( with 250 mm diameter bowl in use )
  • ( Above nominal processing capacities are approximate and can vary depending upon the bulk density, diameter, and other properties of the wet extrudate being spheronized )
Nominal Spheronizing Disc Speed: 600–3000 RPM (depending upon bowl and disc diameter in use)
Spheronizing Disc Supplied:     Two (2) as per standard; one (1) 3x3mm and one (1) 6x6mm truncated pyramid pattern.
Drive Arrangement:  180 W, AC, single phase, self – cooled motor.
Electrical Utility:     110 V / 1 Ph / 60 Hz, or 115 V / 1 Ph / 60 Hz, or 120 V / 1 Ph / 60 Hz
Compressed Air Utility:  5–6 Bar supply  pressure (only required when optional fines air system is selected)
Standard Documentation:  Installation / Operation Manual, Parts List, Completed Quality Control Check Sheet, and CE Declaration of Conformity Certificate
  • Various bowl and disc sizes: 60/85/120/250 mm diameter.
  • Various disc patterns: 1x1 / 2x2/ 3x3/ 6x6 mm truncated pyramid patterns; Radial groove pattern.
  • 60 / 85  mm diameter bowl and discs in stainless steel or in plastic.
  • 120 / 250 mm diameter bowl and discs in stainless steel.
  • Jacketing of the 120 / 250 mm diameter bowls (for indirect heating or cooling of the bowl. NOTE: actual heating / cooling circulatory supplied by customer).
  • Fines air feature  (5–6 Bar compressed air pressure to be supplied by customer).
  • Automatic run timer (mounted on front of base stainless steel enclosure).
  • Installation, start–up and training.
  • Product contact material certificates.
  • Installation Qualification (IQ) / Operational Qualification (OQ) document package (includes product contact material certificates).
  • Customized controls and displays.
  • DataStor – 2TM ( Data ( Kw, RPM, Degrees C ) Collection and Reporting Software) ( Lap Top Computer System or Personal Computer System supplied by customer )
  • Factory Acceptance Test (FAT) and Site Acceptance Test (SAT)