Alfa Laval - Junior No. 11
Technical Data Sheet
Brand: Alfa-Laval (distributed by the Società Alfa Laval, Milan, Via Farneti 5)
Model: Alfa-Laval Junior No. 11 (clearly marked on the front casting and on the nameplate as "J 11")
Type: Manual benchtop centrifugal cream separator for small-scale production
Production period: 1930s - 1950s
Materials: One-piece cast-iron body with its original petrol green/aquamarine paint, bowl and drain spouts in matte rust-resistant metal alloy.
Mechanical Characteristics (from the original nameplate)
Hourly milk flow rate: 90 litres/hour
Hourly whey flow rate: 90 litres/hour
Crank speed: 60 turns per minute
(Technical note: While keeping the same manual pedalling rhythm of 60 turns per minute as the "20" model, this "Junior No. 11" version has internal gears or a disc drum capable of processing a greater volume of fluid per hour: as much as 90 litres compared to the 60 of the first model).
Fun Facts and Historical Details
The "Junior" series
The word "Junior" should not be misleading: it does not mean it was a toy or a low-quality model, quite the opposite. In the nomenclature of agricultural machinery of the first half of the 20th century, "Junior" indicated the compact line specifically designed for family-run businesses or small direct farms, distinguishing it from the huge motorised centrifuges used in large industrial dairies or milk processing centres.
The T-wrench inside the bowl
In one of the photos, resting inside the large upper basin, a metal T-shaped wrench can be seen. This is an exceptional historical detail for lovers of period mechanics: it is the original disassembly wrench used by the operator (or the housewife) to unscrew the central nut, remove the drum and separate the individual internal conical discs to wash them thoroughly after each use, preventing milk residue from spoiling.
Historical Value
From the point of view of preservation and the history of rural technology, this specimen has excellent relevance for several reasons:
Completeness of accessories: The presence of the original T-wrench for maintenance is a rarity, since these tools were often lost over the decades during house moves or changes of ownership in old farmhouses.
Original colouring preserved: the original green protective paint is clearly visible here. Although it shows the classic signs of age and surface rust blooming on the base and edges of the casing, it retains the authentic period patina without having been altered by aggressive modern restorations.
A testimony to daily work: this Alfa-Laval Junior is the perfect symbol of the Italian countryside during the post-war reconstruction, an irreplaceable pillar that allowed self-sufficiency and the production of fresh butter and cheese directly on the farm.