History of "Monozukuri" (Manufacturing)

Dump Trucks


  • 1946 Established "Kawanishi Motor Service Division"
    (Launched Special Purpose Truck Business)

    Immediately after the war ended, the U.S. Army vehicles in Western Japan were being serviced at the former site of the Naruo Airport. The service was initially being performed by the U.S. military forces however, Japan was requested to do the service because the soldiers were returning home. Therefore, the "Kawanishi Motor Service Division" (the predecessor of the Special Purpose Truck Division) was established, in order to earnestly start providing a repair service for military vehicles.

  • 1949 Completed First Dump Truck

    We steadily carried out preparations looking towards the next generation while providing repair services. During this preparation, we assembled parts of U.S. dump truck manufacturer considering " if we are going to start the vehicle business, dump trucks would be interesting," and the memorable First dump truck was completed in 1949. Subsequently, we developed a unique gear pump for cylinders, and the status of the "Kawanishi Dump Trucks" became known for their high quality and being unbreakable.

    First Dump Truck
    First Dump Truck
  • 1951 Started production of "three-way dump truck"

    While facing uncertainty due to Typhoon Jane and the withdrawal of the occupation forces, we entrusted our future dreams in the manufacturing of dump trucks. As a result of commercializing the "three-way dump truck" in 1951, and exporting the first truck to Argentina in 1952, our financial status became profitable the same year with the tail wind of the times, and the efforts of the related parties.

    First three-way dump truck exported
    First "three-way dump truck" exported
  • Expanded to Kanto area (Eastern part of Japan)

    In 1954, the Tokyo Plant was established by decision of the executives at that time. Dump truck orders for Burma (currently Myanmar) received the following year were completed on time, and the difficult export inspection was also passed. Therefore, recognition of "Kawanishi dump trucks" rapidly grew in the Kanto area as well.

  • Latter half of the 1950s Developed small-sized dump trucks

    The demand for small-sized dump trucks started to increase gradually in the latter half of the 1950s. In 1962, the Hiroshima Plant was established with the expectation of having business transactions with two major chassis manufacturers which were manufacturing small-sized trucks at the time, and every effort was also made to receive orders from dealers in three prefectures, including Hiroshima, Yamaguchi, and Shimane.

  • Upsizing dump trucks

    Along with the upsizing of trucks with the aim of rationalizing transportation which started around 1965, the main products were changed from 2-ton and 6-ton trucks to 4-ton and 8-ton trucks. Since the production capacity of the existing plant was reaching its limit due to the increased demand for trucks, the Samukawa Plant was established in 1966 as a mass production plant dedicated to 4-ton and 8-ton dump trucks.
    Subsequently, the upsizing trend of the vehicles continued, and when the 10-ton truck started to attract attention, the industry's largest Sano Plant was established in Tochigi prefecture in 1970 as the base to build 10-ton trucks.

    10-ton dump truck (1969)
    10-ton dump truck (1969)
  • 1971 Developed "TENTSUKI DUMP"

    During this period, in response to the high demand for special purpose trucks, we concluded a technical assistance agreement with a French company, and commercialized a new type dump truck. The new dump truck with excellent toughness and stability compared to the conventional Garwood type was named the "TENTSUKI DUMP," and mass production was started and the truck was released in 1972. This truck became so popular that the production volume had to be increased, and became our main product which continues to date.

  • "Kawanishi Dump Trucks" to "ShinMaywa Dump Trucks"

    The "Kawanishi Motor Service" which produced various special purpose trucks in response to the needs of the times, took a new step in 1983 as the Special Purpose Truck Division of "ShinMaywa Industries." Under the new organization with an enhanced sales structure, new dump trucks were created making full use of the technology cultivated to date.

  • 1989 "Loader Dump Truck"

    The integrated technology of a dump truck and sliding bed enabled a single truck to carry gravel and construction machinery. This truck is playing an active role at construction sites.

    Loader dump truck
    "Loader Dump Truck"
  • 2004 "SLIDE DECK"

    Loads can be dumped without raising the bed, by sliding the rail unit located on the floor towards the back. The slide deck is suitable for carrying wood chips for fuel, etc., as well as for the field of biomass power generation that is expected to grow in the future.


In the future

We will endeavor to create high value-added dump trucks, by timely responding to the changes in society, such as the electrification trucks, and work style reform.

Current Rear Dump Truck
Current Rear Dump Truck

In the future

We will endeavor to create high value-added dump trucks, by timely responding to the changes in society, such as the electrification trucks, and work style reform.

Current Rear Dump Truck
Current Rear Dump Truck