10.1 Concept of life for slider type
10-1
10. Life
10.1 Concept of life for slider type
The mechanical life is represented by that of the linear guide receiving the greatest moment load.
The operation life of the linear guide is to be determined by the total driving distance reachable
without flaking (peeling on rail surface) in 90% of a group of products operated under the same
conditions.
Operation life can be calculated with the method shown below.
How to calculate operation life
For the operation life of the linear guide, use the dynamic allowable moment stated in "1.2
Mechanical specifications", and calculate with the formula below.
L = × 10,000 km
L : Operation life (km)
C
M
:
Dynamic allowable moment (N·m)
M : Moment acting (N·m)
10,000 km: Standard rated life of ELECYLINDER
In addition, calculate with the formula below if the life may be shortened due to vibration or
mounting status.
L =
●
●
× 10,000 km
L : Operation life (km) f
ws
: Standard load coefficient
C
M
: Dynamic allowable moment (N·m) f
w
: Load coefficient
M : Moment acting (N·m) f
α
: Mounting coefficient
10,000 km: Standard rated life of ELECYLINDER
C
M
M
3
3
C
M
f
ws
1
M
f
w
fα