Firestone EMDG198 User Manual download pdf (Page 3)

ADVANTAGES OF FIRESTONE

AIRSTROKE

ACTUATORS

Why use an Airstroke actuator (rather than air or hydraulic cylinder)

for actuation?

LOW COST

Generally, initial cost is one-half or less than conventional pneumatic or hydraulic cylin-

ders of the same force capabilities. This initial cost advantage is many times greater in

the larger sizes.

WIDE SIZE RANGE

Airstroke actuators are available in sizes ranging from 2.2 inches to 37 inches in diameter.

The force capability is 100,000 pounds. Strokes of up to 14 inches are possible.

DURABLE FOR LONG LIFE

Airstroke actuators are a further application of Firestone’s time proven Airide springs for

truck and bus suspensions. The long life and durability necessary for millions of miles of

heavy duty suspension use under adverse environmental conditions are also important

factors in machine design.

NO MAINTENANCE OR LUBRICATION REQUIRED

NO INTERNAL ROD OR PISTON

Airstroke actuators have no internal rod, piston, or sliding seals as do conventional

cylinders. This allows for the design of Airstroke actuators into applications where dirt or

grit would destroy the seals on conventional cylinders.

FRICTION FREE FOR IMMEDIATE RESPONSE

Since Airstroke actuators have no sliding seals, there is no breakaway friction as with

conventional cylinders

FLEXIBLE MEDIA

An Airstroke actuator can do its work with either a liquid or gas (Please see page 14 for

acceptable media choices.)

ANGULAR CAPABILITY

An Airstroke possesses the unique capability of stroking through an arc without a clevis.

Angular motion of up to 30 degrees is possible, along with the design advantage of

generally less complex linkages.

SIDE LOADING CAPABILITY

Airstroke actuators, within certain limits, are not

affected by side loads as are conventional cylin-

ders. This misalignment capability eliminates

potential rod bending, scoring, and excessive seal

wear common to conventional cylinders.

COMPACT STARTING HEIGHT

Airstroke actuators have a low profile compared to

conventional cylinders. Our smallest Airstroke

actuator (2.2 inch/dia.) collapses to just 1.1 inches

in height, while our largest triple convoluted

Airstroke (37 inch/dia.) will collapse to a very com-

pact 5.5 inches.

FACTORY SEALED AND TESTED

Most Airstroke actuators feature Firestone’s proven

concept of crimped end plates. The crimped design

allows for preshipment testing and quicker installa-

tion on equipment.

PLEASE REFER TO PAGE

FOR A THOROUGH

DISCUSSION OF ACTUATION.

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Firestone EMDG198 User Manual Page 3

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