Here are the 10 prerequisites to address
to define the cylinder best suited to your application.
1 - The Race
Expressed in mm, it corresponds to the distance traveled by the cylinder rod (from the maximum retracted position to the maximum extended position).
2 - Strength
Expressed in N, it de nes the pushing or pulling force of the ge. It depends on the cinema and on the cylinder (electrical power of the motor, type of screw used, reduction ratio, system efficiency, duty cycle, engagement, etc.).
3 - Speed
Expressed in mm/s, it is the exit or retraction speed of the rod. On some models, it varies if the resistant force is unstable.
4 - The supply voltage
Expressed in V, it will be, depending on the model, 12,24,48 V.
5 - The Service Factor
Expressed in %, it corresponds to the maximum duration of energization of the motor with an ambient temperature of 20°C. This data makes it possible not to exceed the temperature limit acceptable to the motor.
S1: Known operation.
S2: Short-term operation. Or 5 minutes continuously followed by sufficient rest for the cylinder to cool down.
S3: In % - Time when the actuator is energized over a period of 10 minutes, whatever the period.
6 - Clutter
Expressed in mm, it defines the dimensions of a cylinder. It mainly depends on the stroke, the force and the power of the motor but also on the mounting configuration (eg mounting with in-line or lateral motor)
The plans are generally available in our photos or documents to download.
7 - Lifespan
It is the wear of the mechanical parts of the jack that limits its life. This value is therefore difficult to measure. It essentially depends on the total distance traveled by the rod, the load (often variable), the screw or ball screw technology used and many other factors. A number of cycles is still available on our product sheets in order to have a global idea on the subject.
8 - Protection
Characterized by the IP index (Standard EN 60 528), it indicates the quality of protection against the penetration of liquid or solid inside the cylinders. It is therefore imperative to know beforehand the constraints of the ambient environment (exposure, temperature, humidity, corrosion, etc.).
9 - The risk of reversibility
The actuator may be subjected, when stopped, to a force liable to move its rod unexpectedly. A mechanical brake is generally available at the height of the cylinder force. However, a mechanical wedging solution must be installed if the risk of human injury is possible.
10 - Limit switches, potentiometers, Hall sensors and encoders
They make it possible to stop the motor when the rod has reached the extreme positions and are essential to avoid damaging the mechanics of the cylinder and destroying the motor by abnormal overloading. During operation, no obstacle must interrupt the movement of the jack on its stroke.
Potentiometers and encoders
These options give information on the intermediate positions of the rod during its displacement.
1/ Potentiometers: they transform variable resistance information proportional to the position of the rod. Their use can avoid that of limit switches.
2/ Encoders: they count a number of pulses pari tou rotation of the motor (or of an element of the kinematics). With this option, the limit switches remain essential.