　
　Spring Units can be installed into mechanism without developing and designing newly by each
　user and and are being used commonly for such application like semi-automatic slide door
　closer and unit to keep position of windows inside electric trains.
　Our spring unit has highest quality with severe incoming inspection on each parts and outgo-
　ing inspection before delivery.
　Full automatic doors require large initial investment and need periodical maintenance, while
　semi-automatic slide closer can save initial investment so much for installation and repair work
　is quite easy. Some spring units can expect more than one million times of life.
　Necessary power of spring units are depend on door weight and the power can be adjusted
　by change of spring power or change of position of adjuster on spring unit.
　For semi-automatic slide closer, closing speed is too fast by using sprig unit only. So, usually it is
　necessary to attach oil or air dumper with stopper and they control door to close softly.
　

　Model : ZMY-B

　Initial torque： 0.3kg,0.5㎏,0.7kg,0.9kg

　To be used for either left or right hand side open

　of door and direction of wire pull out can be
　changed from upper side or below side.　

　Standard stroke: Max. 1,500mm

　Life：　One million (For reference)

　Adjustment of output power: Ｉｆ need adjustment

　of output power for initial installment or after

　some period, take out adjuster and turn center

　axle toward left or right hand side, which are

　shown by arrow, by using driver

　Model : ZMY-M

　Initial torque： 0.3kg,0.5㎏,