Technical Terminology & Cautions for Use

–6–

AECTB36E 201510-T

■ Types of actuators

Shape

Classification

Pretravel

(PT)

Overtravel

(OT)

Operating

Force

(OF)

Vibration

Shock

Features

Pin plunger

Small

Small

Large

Out-

standing

Appropriate for linear short-stroke action. Pin plunger acts directly on snap

action mechanism, enabling high-precision positioning. Amount of movement

after operation is smallest among all of the actuators, however, so reliable

stopper is required.

Spring small

plunger

Small

Medium

Large

Excellent

Used in much the same way as the pin plunger, but is easier to use because

the amount of movement after operation is larger.

Spring short

plunger

Small

Medium

Large

Good

Pin plunger is short, with large plunger diameter that makes centering easier.

Like small spring plunger, amount of movement after operation is large.

Panel attachment

plunger

Small

Large

Large

Good

Secured to panel with hex or lock nut; used as manual or mechanical plunger.

Amount of movement after operation is extremely large and operation point can

be adjusted by changing attachment position. Can be used in combination with

low-speed cam.

Panel attachment

roller plunger

Small

Large

Large

Possible

This is the panel attachment type with a roller, and can be used with fast-

moving cams and dogs..

Hinge lever

Large

Medium

Small

Possible

Little force required for operation. Appropriate for use with low-speed cams and

dogs; has large stroke.

Lever available in various shapes to fit operating unit.

Simulated roller

lever

Large

Medium

Small

Possible

Tip of hinge lever is bent into a semi-circle, enabling use as a simple roller type.

Leaf lever

Large

Large

Small

Excellent

Play in lever is used to assure maximum stroke. Construction provides for

space where lever is attached, for outstanding resistance to freezing.

Hinge roller lever

Large

Medium

Small

Possible

This is a hinge lever with a roller, and can be used with high-speed cams and

dogs.

The force required for pin plunger action is lighter than that of the lever, and the

stroke is longer.

One way action

hinge roller lever

Medium

Medium

Medium

Possible

This is hinge roller lever type, and can operate in relation to an operating unit

from a one way direction, but the roller is bent from the opposite direction and

cannot move.

This can be used to prevent reverse-direction action.

Leaf spring

Medium

Medium

Medium

Good

This has a leaf spring with offset yield force and has a large stroke. Ideal for

driving low-speed cams and cylinders. Fulcrum is fixed for high precision. To

prevent leaf damage, movement after operation must be within specified value.

Roller leaf spring

Medium

Medium

Medium

Good

This is a leaf spring with a roller, and can be used with high-speed cams.

(OC reversed

action groove type)

Reverse-action

hinge lever

Large

Small

Medium

Excellent

This is used for low-speed, low-torque cams.

The lever comes in various shapes to fit the

operating body.

The plunger is constantly

pressed down by a coiled

spring, and operating the

lever induces reverse action.

Because the plunger is

depressed when not

engaged, vibration and shock

resistance are excellent.

Pressing the plunger too far

does not cause abnormal

force to be applied to the

switch mechanism, so a

stable service life is assured.

(OC reversed

action groove type)

Reverse-action

hinge roller lever

Medium

Medium

Medium

Excellent

This is a reverse-action hinge lever with a roller

and is appropriate for cam operation. Excellent

resistance to vibration and impact when not

engaged.

(OC reversed

action groove type)

Reverse-action

hinge roller short

lever

Small

Medium

Large

Excellent

This is a shorter version of the reverse-action

hinge lever with a roller and has a larger action

force, but is appropriate for cam operation with

a short stroke. Excellent resistance to vibration

and impact when not engaged.

Rotating-action

type

Large

Large

Small

Possible

This is a rotating, light-action type that is ideal for detecting paper, coins, and

similar objects.