The ST thrusters by Speed-O-Controls are available in 4 models with stroke lengths of 51, 76 and 127 mm and are capable of producing 15 to 295 kg. Their rated supply is 400/440V/50Hz/3 phase and other voltages (up to 600V) are available on request. These thrusters should be mounted with in +10 degrees from vertical and use transformer oil to BS 148.
