... unit mounted on a low headroom type trolley.Motors are totally enclosed fan cooled, hoist duty with Class âFâ insulation ... & pinions run on antifriction type ball / roller bearings in totally enclosed oil bath giving constant splash lubrication. The helical / Spur ... , reversing & braking in accordance with IS-325. Motors are totally enclosed in dust proof construction, foot / flange mounted TEFC , Sq. ...