Types of hydraulic cylinders
All hydraulic cylinders
Block cylinder (BZ)
A characteristic feature of block cylinders is their rectangular housing. This housing shape allows the imple- mentation of various mounting options. They can be operated with an operating pressure of up to 500 bar (7250 PSI), and there are various options for sensing the piston position. For strokes greater than 200 mm (7 .87 inches) the housing has a cuboid shape; larger strokes are implemented using a tube between the cuboid head and the bottom. The main area of application of block cylinders is mold construction.
Block cylinder with wedge clamp element / guide rod
With these cylinders, a guide housing is flanged to a block cylinder. This housing guides a hardened rod that can be loaded with side forces. With the wedge clamp element (BZK), a bevel is created in the guide rod. This can be used, for example, to for the clamping of workpieces. With the BZF, the guide rod is used as a guide with the capability to absorb side forces, which with hydraulic cylinders normally has to be avoided.
Block cylinders
Block cylinder with non rotating piston rod (BVZ)
These cylinders are available up to 250 bar (3625 PSI) and maximum permissible torques between 3 and 90 Nm (2 .21 and 66 .38 foot-pound force). This cylinder option is always advantageous when the piston rod – and any tools that it moves – are not allowed to rotate.
Circular block cylinder (RZ)
Circular block cylinders are a variant of the block cylinder product line. Their structural design is the same as that of the block cylinder . Their externally visible difference from them is their cylindrical housing, which has proven to be advantageous in some installation situations where little space is available.
Flanged cylinder
Flanged cylinders are round hydraulic cylinders with flanges. Thanks to their small dimensions they are often used in fixture and mold construction. The pressure ports are located in the screw-on flange, and thus at one end of the cylinder. In practice, flanged cylinders are best suited for strokes up to 100 mm; in addition, the use of double-lined cylinders is advisable.
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