RB0805 Datasheet, PDF (3/14 Pages) List of Unclassifed Manufacturers – Absorbing impact and noise

RB Shock Absorber Series
1. Type of Impact
Cylinder stroke Cylinder stroke Conveyor stroke Free dropping Rotating impact
at load (Downward) at load (Upward) at load (Horizontal) impact
(With torque)
Type
of impact
Cylinder
Load
Load
Cylinder
Load
Load
Load
Collision speed ⁽¹⁾
υ
Kinetic energy
E1
Thrust energy
E2
Absorbed energy
E
υ
—¹² · m · υ²
F1 · S + m · g · S
E1 + E2
υ
—¹² · m · υ²
F1 · S + m · g · S
E1 + E2
υ
—¹² · m · υ²
m·g·μ·S
E1 + E2
2gh
m ·g·h
m ·g·S
E1 + E2
ω·R
—¹² · m · ω²
T · –^SR
E1 + E2
Corresponding ⁽²⁾
mass of
impacting object
Me
— _ϲ₂ ·E
— _ϲ₂ ·E
— _ϲ₂ ·E
— _ϲ₂ ·E
— _ϲ₂ ·E
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 = —¹² ·Me·υ²
Note 3) For the formula of moment of inertia Ι (kg·m²), refer to the catalog of rotary actuator.
Data A
Kinetic Energy E1 or Energy Absorption E
RB0604
RB„0805 to 2725
100
50
40
30
20
10
5
4
3
2
1
Symbol
Symbol
Specifications
Unit
d
Bore size
mm
E
Absorbed energy
J
E1
Kinetic energy
E2
Thrust energy
J
J
RB
F1
Cylinder thrust
N
g Acceleration of gravity (9.8) m / s²
h
Dropping height
m
Ι ⁽³⁾
Moment of inertia around
the center of gravity
kg · m²
n
Operating frequency
cycle / min
p Cylinder operating pressure MPa
R
Distance between axis of
cylinder and impact point
m
S
Shock absorber stroke
m
T
Torque
N·m
t
Ambient temperature
°C
υ
Collision speed
m/s
m
Impact object mass
kg
Me
Corresponding mass of
impact object
kg
ω
Angle speed
rad / s
μ
Friction coefficient
—
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)
Collision speed υ (m/s)
D-„
-X„
Individual
-X„
1675