Tamashima factory has the cutting edge equipment and skilled craftsmen.
We have introduced the latest facilities at our Tamashima factory, including high-precision CNC blade milling machines, high-technology propeller overturning machines and internet-of-things (IoT) sensors, all of which improve efficiency and ensure safety at the plant. Nakashima Propeller combines the latest facilities and the technique of a superior craftsman to produce highly accurate and optimised propellers for customers.
Mega castings / 185t
Maximum cast weight: 185t. We manufacture approximately 12,000 t of cast products per year, and can boast of having the No. 1 share of this type of products in Japan.
Custom-made designing molding
This manufacturing method does not require a prototype mold and makes single products in one step. By this method, manufacturing with shorter delivery will be possible.
Reverse mega propellers in just 3 minutes.
Nakashima can produce propellers in a variety of sizes, up to a total weight of 135t. Although moving such a heavy product safely is not easy, the product must be flipped over at least four times during the manufacturing process. Nakashima has a custom-built propeller overturning machine that reverses a 135t propeller in only 3 minutes. This machine has caused no accidents in the 10 years since its introduction. The site where the casting operation is carried out experiences harsh operating conditions. Cleaning the inside of the electric furnace requires heating up to 1000°C and has so far been carried out manually with small-scale torches. We have developed custom slag-removal equipment that allows us to clean the furnace quickly after each operation to extend the life of the equipment and reduce its environmental impact.
We have been able to produce more than 400 propellers per year. This is an IoT factory that achieves both mass production and high performance.
Our Tamashima factory, which is the main plant for large propellers, manufactures more than 400 propellers annually, and it was built in 2005. Our custom product management system integrates information from management and production facilities. Some instruments are managed with online information, such as machine operation status, demand monitoring and our original horizontal balancing system. We analyse daily calibration information for each measuring instrument to maintain accuracy and improve manufacturing tolerances.