14130 Crank Type Cylinder
- 3" and 3 1/2" Sizes
- Full 90 Degree Rotation
- Optional Manual Operator
- Average Output Torque 2760 in. lbs. to 3750 in. lbs.
Model 14130 Crank Type Cylinders accept hydraulic oil to produce a rotary motion 90 degrees maximum. The
models consist of a linear motion cylinder and a linkage
which connects to a rotary motion.
The cylinder requires extremely low breakloose pressure,
which assures accurate positioning for the smallest output
change of a hydraulic controller, because the piston and
cylinder are accurately fitted without rings or packing by
individually grinding and lapping each piston into a honed
cylinder. Simplicity of design and precision manufacture
assure long trouble free performance with unimpaired
sensitivity and accuracy.
Because of the unique construction of the cylinder, there is
no loss of piston area due to the piston rod and therefore
the stroking speed and force are the same in each
direction. This provides for a simple method of obtaining
manual operation by employing a bypass pump in a bypass
Crank Type Cylinders provide a readily adaptable means
of correcting the undesirable non-linear characteristics of
a butterfly valve. The angular travel of the crank is readily
adjustable to provide the maximum operating force for
seating the valve in the closed position.
Various size crank arms are available for the 3" (bore
diameter of the cylinder) size, including an adjustable crank
arm which provides for full piston travel for a given angular
travel of the final control element. Connecting rods are
available for all sizes, which are easily altered to length in
All three sizes of cylinders are available with optional
equipment including de-clutching manual operator (handwheel
type), limit switches, and pilot valves.
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