美国Bimba Manufacturing Company，美国BIMBA气缸其创始人于1957年发明了不锈钢材质的、不可拆修的气缸以代替传统的可拆修的小缸径气缸。后来这种气缸成为一种工业标准。
而多年来，BIMBA 公司的产品线也已扩展到多个品种类型的气缸，成为北美地区最大的气缸生产厂。 BIMBA气缸，以其卓越的性能品质，占有北美60%市场。
线性推进缸：304 不锈钢缸体确保可靠长寿命，提供平顺的导引动作。
无杆气缸和普通气缸的的工作原理一样,只是外部连接、密封形式不同
Improper mounting of the Ultran slide could result in binding and/or excess breakaway.
As a rule of thumb, the end blocks should be mounted flat with no more than 0.30? of
differential misalignment end-to-end (including both end blocks, i.e., 0.30? on one end
block if other end block is square. If both end blocks are out of square, the total
between them cannot exceed 0.30?. The x dimension represents how much displacement
0.30? represents using 0.0175" per inch per degree of misalignment.)
The cutaway drawings above show how the Bimba
magnetically-coupled Ultran rodless cylinder works.
Three magnets are located on the carriage. Three
matching magnets are on the piston. (For 5⁄16" bore,
five magnets are used.) These magnets form a strong
bond that holds the carriage and piston together. When
the cylinder is actuated, the piston and carriage move
该Ultran滑动安装不正确可能会导致约束力和/或多余的分离。
无杆气缸里有活塞，而没有活塞杆的，活塞装置在导轨里，外部负载给活塞相连，作动靠进气。
无杆气缸分为磁偶无杆气缸和机械接触式无杆气缸。无杆气缸是指利用活塞直接或方式连接外界执行的机械，并使其跟随活塞实现往复运动的气缸，这种气缸的最大优点是节省安装空间。
1、密封性能差，容易产生外漏。在使用三位阀时必须选用中压式；
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