Construction and functional principle of a gas spring

Gas springs with a single chamber system (SN2900)

The gas is compressed in a chamber. The effective piston area corresponds to the body inner diameter. Single chamber cylinders are characterized by great forces on a small diameter.

Single chamber cylinders can only be run with lower stroke speeds in comparison with two-chamber cylinder types.

Gas springs with a two-chamber system (ISO 11901)

During the stroke, the gas is led through borings to the upper piston ring area. The effective piston area corresponds to the piston rod diameter. Two chamber cylinders are characterized by the fact that thereby greater strokes and stroke speeds can be run. At the same time the total height is reduced in comparison with the single chamber type.

Gas springs with two-chamber system (MICRO-Series)

During the stroke, the gas is led through borings or a free space to the upper piston ring area.

The effective piston rod area corresponds to the piston rod diameter. Two chamber cylinders are characterized by the fact that hereby higher strokes and stroke speeds can be run. At the same time the total height in comparison to the single chamber type is reduced. The MICRO-series is extremely low-sized.

Tubing of gas springs

Preparation of a gas spring for a tubing

Gas springs with a lateral connection can be connected to each other with a high-pressure hose. Thus they can be filled together by means of a control panel.

The animation shows the preparation of a gas spring for the tubing.

Connection of a connecting hose

Gas springs with a lateral connection can be connected to each other with a high-pressure hose to be filled together by means of a control panel.
The animation shows the connection of a high-pressure hose.

Special gas spring systems

Functional principle of the controlled gas spring (SN2875)

Gas springs extend when they are no longer charged. Controlled gas springs can be locked in BDC-position. If the upper part of the tool is extended far enough, the electromagnetic valve is released and the gas spring is extended again.
A deformation of the bent/drawn component is thus avoided.

Functional principle of the controlled gas spring – sectional view SN2875

The animation shows the functional principle at the sectional model.

Mounting plate with interconnected system, controlled gas spring SN2875

The animation shows the construction of a mounting plate with controlled gas springs SN2875 in a connection for a simple assembly in the tool.

NEW safety features concerning STRACK NORMA gas springs

Safety against overpressure

The gas springs of the newest generation are provided with safety features, which let the steam escape in case of overpressure due to pollution, to increase the security for the user while operating with gas springs even more.

Safety against overstroke of the piston rod

The gas springs of the newest generation are provided with safety features to increase the security for the operator even more.
If the piston rod is extended beyond the stroke reserve, the seal is destroyed by a defined deformation of the piston rod and the pressure escapes.

Safety against overstroke in the body and the piston rod

The gas springs of the newest generation are provided with safety features to increase the security for the operator even more. The safety device opens a drain hole at the body while having an overstroke of the piston rod.

Safety against a too fast extension

The gas springs of the newest generation are provided with safety features to increase the security for the operator even more. The safety device is activated at an abrupt extension of the piston rod. Hereby the guide bushing is deformed so that the pressure can escape through the bushing seal.