The company reserves the right to vary models and dimensions without notice.
These products are designed for industrial applications and are not suitable for sale to the general public.
8
Seal Kits & Technical Data
NORTH AMERICAN CYLINDER & ACTUATOR CATALOG
>
Release 8.5
SEAL KITS & TECHNICAL DATA
377
Calculation:
Example 9: Horizontal rotating door
Application data:
m
= 200 kg
ω
= 1,0 rad/s
T
= 100 Nm
R
= 0,5 m
Rs
= 0,4 m
S
= 0,015 m
C
= 100 cycles/h
The adequate shock absorber to use in this case is Mod. SA 2015
according to the technical data, where we find that E
t
(
max)= 59 Nm, E
tc
(
max)= 38000 Nm/h and Me (max)= 720 kg.
To ensure the lifetime of the shock absorber, the movement of the impact body
must be perpendicular to the shock absorbers axial centre.
Note
:
The maximum allowable eccentricity
θ
≤ 2,5° (0,044 rad).
Perpendicularity of the load
ω
Load
l
=
mR
2
=
200
.
0,5
2
= 25 Kg
.
m
2
2 2
E
k
=
l
ω
2
=
25
.
1,0
2
= 12,5 Nm
2 2
θ
=
S
=
0,015
= 0,0375 rad
Rs 0,4
E
d
= T
.
θ
= 100
.
0,0375
= 3,75 Nm
E
t
= E
k
+ E
d
= 12,5 + 3,75 = 16,25 Nm
E
tc
= E
t
.
C = 16,25
.
100
= 1625 Nm/h
v
=
ω
.
Rs = 1,0
.
0,4
= 0,4 m/s
Me
=
2
E
t
=
2
.
16,25
= 203 Kg
v
2
0,4
2
