Japanese injection press maker Japan Steel Works Ltd. will stop making hydraulic, horizontal machines and fully adopt all-electric technology.
JSW will continue to use hydraulic power for vertical presses, and in a hybrid electric/hydraulic format for very large horizontal presses, where current electric servomotor technology does not yet exist to make all-electrics.
But already, the company has moved all-electrics into some big sizes, according to Takeshi Kawachi, deputy director of JSW's injection molding machinery division.
JSW recently developed and built an all-electric press with 2,500 metric tons of clamping force for an automotive molding operation. Now the company is seeing interest in those big all-electric models for nonautomotive jobs, such as big-screen televisions, he said at K 2007, held Oct. 24-31 in Dusseldorf.
Kawachi said the big Japanese automotive molding market has consumed most of JSW's all-electrics from 500 to 1,300 tonnes. That's why JSW looks to the auto business when it develops new machines - and Kawachi said Japanese automotive molders do not want hydraulic presses anymore.
JSW is constantly working to improve its all-electric injection presses, Kawachi said. The company now offers some all-electrics that have superfast injection speeds of up to 40 inches per second, he said.
Japan Steel Works builds its injection presses in Hiroshima, Japan, and is based in Tokyo.