Quarter turn, double acting and spring return type with a totally enclosed design and no external moving linkages.
四分之一转，双动和弹簧回位类型，具有全封闭结构，没有外部活动连接。
Air or gas cylinder actuators include single or double acting, fail open or closed by mechanical spring or pneumatic force. They can be manufactured to accommodate any length stroke.
空气或燃气缸体执行机构包括单动或双动，由机械弹簧或气动力实现故障开启或关闭等各种类型。
They are available in either double-acting or spring-return configurations.
他们可以以双作用或弹簧返回配置。
The Hytork actuator is available in aluminum or with a protective Fluoropolymer coating and can be double acting or spring return.
Hytork执行器采用铝外壳并可选氟聚合物保护涂层，能提供双作用和弹簧复位。
Clippard offers more types of miniature pneumatic cylinders for the designer's convenience, including: spring return, spring extend, air retract, double-acting and double rod models.
Clippard提供更多种类的设计师的便利，包括微型气缸：春天的回报，春天延长，空气收回，双动双杆模型。
Compak Cylinder Actuarors are a versatile rack-and-pinion design and are available as double-acting or spring-return units.
康派克气动装置的设计是通用的、带支架与齿轮齿条传动。
Compak Cylinder Actuarors are a versatile rack-and-pinion design and are available as double-acting or spring-return units.
康派克气动装置的设计是通用的、带支架与齿轮齿条传动。
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