404LXR Series Product Manual
Chapter 2 - 404LXR Series Table Specifications
16
Table A – Linear Motion Guide Bearing Life/Load Computation
Positioner
Loads
Compute
Evaluate Life On
Side & tension Ps > Pt
Side & tension Ps Pt
Pe = (0.5 x Pt) + Ps
Pe = (0.5 x Ps) + Pt
Side load chart
Tension chart
404LXR
Side & compression Ps > Pc
Side & compression Ps Pc
Pe = (0.5 x Pc) + Ps
Pe = (0.5 x Ps) + Pc
Side load chart
Compression chart
Example Computations
Page 14 shows this
configuration with dimensions
given here.
9
.
14
2
2
4
2
1
=
=
=
d
d
L
P
P
(tension) Kgf
d1 = 108.5 mm
db = 130 mm
d2 = 60.0 mm
d3 = 50 mm
da = 48.5 mm
d4 = da + db = 178.5
9
.
14
2
2
4
4
3
=
=
=
d
d
L
P
P
(compression) Kgf
8
.
4
2
4
1
3
3
1
=
+
=
=
d
d
L
L
P
P
s
s
2
.
0
2
4
1
3
4
2
=
=
=
d
d
L
L
P
P
s
s
The normal and side force
components on each bearing
block are computed from the
equations as shown:
Life for each bearing needs to be evaluated
independently. For bearings with a side load,
refer to the combined equivalent loading factors
(Table A above).
Example:
Bearing 3 had P
3
= 5.6 Kgf tension and P
3s
= 2.7
Kgf side load
Kgf
Pc
Ps
Pe
Pc
Ps
7
)
5
.
0
(
=
+
×
=
Refer to Bearing Life Normal Load (page 12)
Life @ 7 Kgf (69 Newtons) = 4200 km
Example 1
Horizontal Translation
with Side Loads, 404LXR-
8 Pole Positioner
L = 10 Kgf
130 mm from
carriage surface;
50 mm from carriage
center.
Содержание Daedal 400LXR Series
Страница 8: ...404LXR Series Product Manual Chapter 1 Introduction 8 Assembly Diagrams Strip Seal Version ...
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Страница 11: ...404LXR Series Product Manual Chapter 2 404LXR Series Table Specifications 11 Dimensional Drawings ...
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