1. Type of Impact

Type

of impact

υ

Kinetic energy

Thrust energy

E2

Absorbed energy

E

mass of

impacting object

Me

Cylinder stroke

at load (Downward)

Cylinder stroke

at load (Upward)

Conveyor stroke

at load (Horizontal)

Free dropping

impact

m · g ·

μ · S

2gh

m · g · h

m · g · S

Rotating impact

(With torque)

T · –

S

R

Collision speed

υ (m/s)

100

50

40

30

20

10

5

4

3

2

1

0.5

0.4

0.3

0.2

0.1

0.1

0.2

0.3 0.4 0.5

1

Collision speed

υ (m/s)

RB0604

RB

„0805 to 2725

1675

Note 1) Collision speed is momentary velocity at which object is impacting against shock absorber.

Note 2) An “Impact body equivalent mass” is the mass of an impact object without involving thrust, into which an object’s total

energy has been converted. Hence, E = —·Me·

Note 3) For the formula of moment of inertia

Data A

— · m ·

1

2

υ

2

1

2

— · m ·

υ

1

2

— · m ·

2

2

2

— · m ·

1

2

υ

2

Load

Load

Load

Load

Load

Cylinder

Cylinder

Symbol

d

E

g

h

Ι

n

p

R

S

T

t

υ

m

Me

ω

μ

Specifications

Bore size

Absorbed energy

Kinetic energy

Thrust energy

Cylinder thrust

Acceleration of gravity (9.8)

Dropping height

Moment of inertia around

the center of gravity

Operating frequency

Cylinder operating pressure

Distance between axis of

cylinder and impact point

Shock absorber stroke

Torque

Ambient temperature

Collision speed

Impact object mass

Angle speed

Friction coefficient

Unit

mm

J

J

J

N

m

cycle / min

MPa

m

m

N · m

°C

m / s

kg

kg

rad / s

—

1

2

(3)

Symbol

Corresponding mass of

impact object

Shock Absorber

Series

RB

RB

Individual

-X

„

D-

„

-X

„

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Page 1675