Thrust Ratings - ABB LP Instruction Manual

2.0 THRUST RATINGS

The basic thrust
pneumatic piston is equal to the area
of the piston times the supply
pressure. The
pressure for both the TZID-C and the
AV1 is 20 psi.
The maximum supply pressure for
the TZID-C is 90 psi and 125 psi for
the AV positioner.
The area of the piston is A = πD
Subtract approximately
friction losses and because the rod
side of the piston has less area. An
example is shown for an 80 psi air
supply:
4
LP LINEAR PISTON ACTUATORS INSTRUCTION MANUAL
rating of
minimum supply
2
/4.
10% for
a
LP Cylinder
2.5" d x 5" s
4" d x 4" s
6" d x 8" s
8" d x 16" s
10" d x 16" s
To find the lever length that would result
o
in 90 rotation of the damper shaft,
multiply the cylinder stroke length by
0.707.
Please refer to the individual Product
Specifications for details on the AV
and TZID-C Positioner performance.
Thrust @ 80psi
353 lbs.
905 lbs
2036 lbs.
3619 lbs.
5655 lbs.