... weight Nice in appearance Easily operate Air Brakes 1. The air pressure ventilation shaft clutch: NAC5, NAC10 ... , NAC40, NAC602. Air pressure ventilation shaft brakes: NAB5T/S, NAB10T/S, NAB20T/S, NAB40T, NAB65T3. Air ... security chuck: STOSTW, FLOFLW6.pain magnetic powder clutch/brake7. Electromagnetic clutch/brake8.influencing hydraulic system of hydraulic pressure machinery widely ...