NR300 -Pneumatic Lift Lock Rotary Door mechanism: 1.this kind of bus door systemconsists of rotary actuator, shaft assembly, and door panel assembly. 2.the bus door Actuator provides rotary motion and the “Lift-to-Latch” feature preferred by many coach builders and operators. 3.The plug door panel can be specifically designed to match full bus design. It is made in light weigh and high strength alloy aluminum, which is free of maintenance. 4. Main parameters: Maximumtorqueinlockedposition(@90psi) 122ft-lbs Recommendeddoorshaftrotation 90degree Operatingtemperature -30°Cto80°C Envelopesize 5.51”wx12.50”dx4.53”h Operatingpressure 90-125psi Lockingmechanism Localwedgelock Doorclosingtime 3-5seconds Dooropeningtime 3-5seconds Ivy Machinery, the leading bus door system manufacturer in China, we can provide the optimum door system for any vehicle (buses).