Block cylinders

A block cylinder is a hydraulic cylinder that is frequently used in industrial applications. The name “block cylinder” refers to its design, in which the screw connection and the piston are integrated into a single block housing.

The operating principle of a block cylinder is relatively simple. It consists of a block housing that contains a cylinder bore in which a piston moves. The cylinder housing has connections for hydraulic lines. Alternatively, in some types, the hydraulic oil is supplied via O-ring seats.

Block cylinders are used in a wide range of industrial applications where high forces are required in a confined space. Block cylinders in particular feature a compact block design with high power density, while still being very solid and robust. Due to the various mounting options of the individual series as well as the supply of the pressure medium via pipe thread connections or O-ring seats, they offer a wide range of possible applications.

Application areas of block cylinders are:

• Mechanical engineering
• Robotics
• Manufacturing technology
• Fixture construction
• Mold making
• Plant engineering
• Automation technology

Our block cylinders are available as double-acting (type: 600/601/603) as well as single-acting (type: 650/651) cylinders.

In double-acting cylinders, both extension and retraction are performed hydraulically. In single-acting cylinders, the extension of the piston rod is carried out hydraulically – the piston is returned in the depressurized state by means of spring force. The spring is dimensioned sufficiently for returning the piston. However, no additional external forces can be absorbed. In addition, before delivery of the single-acting block cylinder, the upper connection is equipped with a vent screw for the spring chamber.

We also differentiate our block cylinders in terms of connection and mounting options.

As connection options, we offer in the standard program the connection via pipe thread (type: 600/601/650/651).

In addition, there is type 603. In this cylinder, the pressure medium is supplied directly via O-ring seats.

As mounting options, we offer cylinders with longitudinal and cross holes (type: 600/650). This allows the cylinder to be mounted standing or lying in any desired orientation relative to the oil ports.

As a further variant, we offer the version with 4 cross holes and cross slot (type: 601/603/651). The cross slot is suitable for accommodating standard slot nuts. This allows the hydraulic cylinder to be positioned/aligned quickly and easily and, at higher pressures, also supported against the direction of force.

Customized special designs in series can be realized by us over a wide range. In the range of piston Ø25 mm – Ø125 mm and strokes up to 100 mm for double-acting cylinders as well as piston Ø25 mm – Ø80 mm and strokes up to 32 mm for single-acting cylinders, almost all customer requirements can be realized.

For example, cylinders with:

• special housings
• special strokes
• special pistons

can be supplied. Furthermore, we offer our customers block cylinders with customer-specific connection and mounting options. Special materials as well as inductively hardened and/or chrome-plated piston rods can also be used on customer request. Special galvanic coatings are also possible on customer request. Likewise, special seals can be used on customer request.