Catalogue Setco - Precision Dovetail Slides
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Design Data
Slide Load Capacity
To optimize slide operation over the long haul, one of the most important considerations
Slide Load Capacity Chart
in selection is the loading applied to the slidLoading capacity is based on the pressure
exerted
by an externally applied load on the engaged slide
way surfaces These externally applied loads are considered to be the following:
• STATIC Loading - External loading is applied to a stationary saddle.
• DYNAMIC Loading - External loading is applied to a moving saddle.
• SINGLE Loading - Only one external loading is applied.
• COMBINED Loading - More than one external loading is applied.
The recommended maximum load and moment capacities can be determined from the "Slide Load Capacity Chart." Use the data only as a guide to determine the proper size slide for a particular application. The values in the chart are based on a way surface bearing manufacturer pressure of 25 psi. However,
Data based on calculations at 25 psi:
MODEL
Fh
Fv
Fs
Mx*
My*
Mz*
(Lb.)
(Lb.)
(Lb.)
(Lb.)
(Lb.)
(Lb.)
M0
115
60
50
25
35
90
M1
265
75
65
105
100
180
M2
360
75
65
165
100
180
M3
705
175
150
485
300
575
M4
1165
290
250
980
625
1440
DS4
35 x S
16 X S
15 X S
25 X S
3.50 X S2
6 X S2
DS6
55 x S
22 X S
20 X S
50 X S
4.80 X S2
8 X S2
DS8
80 x S
22 X S
20 X S
65 X S
4.80 X S2
9 X S2
DS10
90 x S
30 X S
30 X S
115 X S
6.60 X S2
11 X S2
DS12
120 X S
30 X S
30 X S
130 X S
6.60 X S2
12 X S2
DS16
160 X S
45 X S
45 X S
260 X S
9.70 X S2
17 X S2
e adjusted to suit your
idelines:
following gu
a
d
pplication using the
Use 25 psi for -
- Manual feed slides.
- Manual grease lubricated slides.
- Slides used for precision machining and grinding applications.
- Slides subjected to combined loading.
■ Use 50 psi (multiply values in chart by 2) for -
- Power feed slides.
- Slides having low friction material.
- Slides having forced lubrication.
- Slides used for rough machining and positioning applications.
- Slides subjected to single loading.
Use 500 psi (multiply values in table by 20) for
- Slides subjected to static loading.
Coefficient of Friction
• 0.30 standard.
• 0.15 with forced lubrication.
• 0.10 with Low-Friction Way Bearing Material and no lubrication.
• 0.05 with Low-Friction Way Bearing Material and forced lubrication.
*See Notes 1 and2, page 51.
Cases and Equations
_fcp Slide Loading = F x d
A Slide Capacity = Mx
1 Mx > F x d
Slide Loading = F Slide Capacity = Fh Fh > F
LOAD CASE I
LOAD CASE IV
Slide Loading = F
Slide Capacity = Fv
Fv > F
LOAD CASE II
Slide Loading = F x d Slide Capacity = Mz Mz > F x d
LOAD CASE V
Slide Loading = F Slide Capacity = Fs Fs > F
LOAD CASE III
Slide Loading = F x d
Slide Capacity = My
My > F x d
LOAD CASE VI
50
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