Mini Barrel Plating Equipment


Specializing in mini-barrel plating kits, Yamamoto-MS provides equipment that accommodates a wide range of needs, from the trial manufacture to the production of micro parts. We target production of micro parts with high added value that can be manufactured within a space of just a single desk. The barrels are manually lined with mesh by engineers to control level differences inside the barrel to the minimum.

When barrel-plating micro parts, repeated use of a mini-barrels produces more accurate plating than one-time use of a large barrel. For this reason, many precision parts manufacturers adopt this method. Precision parts that have been plated with barrel plating kits can be found all over the world. They could be in your smartphone, camera, or watch. They can also be found in precision industrial equipment and elsewhere. All these things could have first started out from a Yamamoto-MS barrel.

Features of mini-barrels

Mini-barrel improves the distribution of current density, compared to when a large barrel is used, and therefore, achieves better distribution of film thickness. Enhanced quality can also be achieved because of the increased frequency (number of times) of each workpiece arising to the surface out of the clustered bunch of work-pieces, which also works to reduce the time required for plating.

Features of Horizontal Barrels

  • Excellent tumbling and mixing performance resulting in high productivity with hardly any dispersion in film thickness.
  • Optimal for precision plating, since plating is barely affected by variability.
  • Rare occurrence of contact failures, thus demonstrating high productivity and quality.

Features of Tapered Barrels

  • Compared to horizontal barrels, tumbling and mixing performance is weaker, but better than oscillating or rocker barrels.
  • Applicable to small work-pieces of φ0.5mm or below, compared to horizontal barrels. (Horizontal barrels are not suited for micro work-pieces as they are likely to get stuck in the mesh.)
  • Compared to horizontal barrels, more suitable for narrow or thready work-pieces which are likely to get entangled.
  • Compared to oscillating barrels, contact failures are less likely to occur.
  • Work-pieces are unlikely to get stuck inside the barrel, regardless of size or shape.
  • Since the barrel is coverless and open, there is no accumulation of gas.

Making Experiments in Beakers Possible

Barrel plating kits make it possible to plate parts used as precision machinery components and precision electronic components – even the microscopic ones. Because the barrels generally used at manufacturing sites are very big, they require large quantities of materials when used for experiments, making them inconvenient to use.

In the 1970s, Yamamoto-MS launched small Barrels that made it possible to conduct experiments using only small quantities of materials. These Barrels became widely known not only for the transparency that made it possible to observe the movement of workpieces inside the tank, but also for the surprisingly compact size that made experiments even in beakers possible. Over time, the trend has shifted to many items and products becoming more and more compact, which also generated the need for us to manufacture mini-barrels for experiments to match the size and shape of such items.

Meeting the Demands of the Times with New Concepts and Technologies

With items to be plated becoming smaller and smaller, Micro Barrel can handle even micron-sized work-pieces. We have also developed the palm-sized Tenori Barrel, the likes of which cannot be found at any other company. (In Japanese, tenori means “fits in the hand.”)

The Micro Barrel is an original product with an unprecedented structure. It can even handle work-pieces that are practically particle-sized. The Tenori Barrel is both small in size, as well as having an extremely small level difference inside the drum, which prevents work-pieces from getting stuck. Both products are actively utilized as production equipment for micro parts and are used widely by watchmakers, electronic component makers, and other such manufacturers.

Extremely Fine Processing Results from High-Level Craftsmanship

To prevent thin parts from getting stuck in the gap caused by a level difference inside the drum, Yamamoto-MS has developed barrels with extremely small level differences. This was achieved through trial and error over many years.

The key was high processing technology of acrylic resin, the adhesion work for which can only be done by very few engineers, even at Yamamoto-MS. The use of acrylic resin for precision barrel plating is optimal, because acrylic resin is harder than PP, making it difficult for small things to get stuck inside the barrel.

We intend to continue working together day by day, with a commitment to satisfying as many customers as possible, while seeking to become a company trusted and admired all over the world.


Barrel plating set

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