Parker Hannifin Corporation
Pneumatic Division
Richland, Michigan
www.parker.com/pneumatics
11
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Tie Rod and Profile Pneumatic Cylinders
P1F Series
Catalog 0980
Technical Data
Locking and braking
The static locking force corresponds to 7 bar pressure. Under
certain circumstances, the lock can also be used as a brake for
positioning or similar applications. The maximum values set out
in the graph must not be exceeded.
Use as a brake
The table shows the maximum values for speed and braking
mass if the cylinder is used as a brake. The cylinder should
not be exposed to additional compressive forces as this
significantly reduces the external mass that can be braked.
The cylinder does not act as a motor during braking. Heat is
generated if the brake is used frequently, and this must be
taken into account too.
2.0
1.5
1.0
0.5
0.4
0.3
0.2
0.1
0.5
1 2
3 5
10
20
30
50
100
200
Ø32 Ø40 Ø50 Ø63 Ø80 Ø100 Ø125
Speed [m/s]
Mass [Kg]
Max. permissible piston speed
at start of cushioning
Air cushion is used to absorb kinetic energy due to load
and speed at both end of stroke. This typically consists of
a threaded needle screw that adjusts into an orifice in the
cylinder end plate. By adjusting the screw further into the
orifice you lessen the amount of air that can escape in a given
time. Slowing the exhaust of air creates back pressure which
slows the piston as it enters into the end cushioning seal.
The graph is valid for an horizontal movement and the
pressure of 6 bar.
Cushioning Characteristics
The mass is the sum of internal and external friction, plus any
gravitational forces. Work out your expected moving mass and
read off the maximum permissible speed at start of cushioning.
Alternatively, take your desired speed and expected mass and
find the cylinder bore size required.
Please note that piston speed at start of cushioning is typically
approx. 50 % higher than the average speed and that it is this
higher speed which determines the choice of cylinder.
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