自锁型气弹簧是一种可以在行程任一位置锁定的气弹簧。 在自锁型气弹簧的活塞杆端部有一个针阀打开这个针阀，则自锁型气弹簧可以象自由型气弹簧那样运行；
The piston rod self-locking type gas spring end there is a needle valve open the needle valve is self-locking type gas spring can run as the free type gas spring;
适用于液压缸活塞杆往复运动用密封装置，也可用于法兰端盖的静密封装置。
Apply to reciprocating motion of hydraulic cylinder piston rod sealed device can also be used to cover the static flange seal.
可以控制油液流如液压缸的其中一端，在活塞杆上产生一个拉力或产生一个推力。
Flow into the cylinder can be directed to either end, producing either a pushing or pulling force at the piston rod end.
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