4
60.7
82
□40
25.
6
M6/8
46
57
Fy
My
Mz
Fx
Mx
Fz
x
y
z
≥
h
PS 4-15
PS 4-25
F
y
= F
z
1,000 N *
2,500 N
M
x
15 Nm
60 Nm
M
y
= M
z
10 Nm
25 Nm
C
7,200 N
17,900 N
C
0
14,500 N
37,000 N
v
max.
5 m/s
5 m/s
ϑ
-
1
0
−
+100 °C
-
1
0
−
+100 °C
h
min.
12
0 mm
18
0 mm
Technical Data
The carriages must be used in combination in order to accommodate high
forces and moments.
Solutions involving several carriages on a single rail and several carriages on
parallel rails are also possible.
Guide systems with parallel rails on a single support profile can be constructed
on the Line 8 profile groove without elaborate alignment measures due to the
special fastening geometry of the rail.
Carriage constructions comprising two or more Bearing Carriages running on
two parallel rails stop the individual Guide Rails from tilting in the profile groove
and reduce torsional load. In order to retain the permitted positional tolerances
when implementing a design such as this, the parallel Guide Rails must be
mounted on one and the same support profile!
Guide Rails should not be connected end-to-end (e.g. to extend the length of the
guide).
The use of parallel rails on different support constructions will require the
amount of alignment and fastening work typically associated with profile rail
guides (machining screw-fit surfaces, using parallel segments, etc.).
Note: The static and dynamic load rating and moment characterise the
rolling-ball contact between the carriage and rail and can be used to
calculate the service life.
The permissible load for a linear guide system depends on the load-carrying
capacity of the guiding elements, the strength of the screw connections and the
design of the profile frame.
A minimum stroke length (h
min.
) is required to ensure that the rolling-ball
contact is sufficiently lubricated. The carriage is charged at the factory with
lithium-based grease. Lithium-based grease with a mineral-oil base can be used
for re-lubrication.
Given the contact pressure of the wipers, a displacement force of 10 N per
Bearing Carriage must be taken into account irrespective of the load.
The load rating is identical for loads on all spatial axes.
Static load safety factor S
o
= C
o
/ P greater than 4 should always be
selected.
The dynamic load rating C is based on a nominal service life of 100,000 m
travel, i.e. 90 percent of a sufficiently large sample of identical bearings achieve
this duty cycle without any sign of material fatigue.
In each individual case, however, it is important to check the link to the connect-
ing structure in order to verify that it is able to support the forces and moments
applied to the linear guide system!
The base of the Guide Rail, in combination with Guide Rail Mounting Profile
PS 4-25 and Guide Rail Clamping Profile PS 4-25, is designed to fit the Line 8
profile groove.
The upper contact face of the Bearing Carriage is designed to accommodate
a Line 8 profile. However, carriages can of course also be designed in other
forms. In such instances, the central ribs on the rear of the Bearing Carriage
provide the sole contact surface. Button-Head Screws ISO 7380 and Locating
Washers 8 can be used to fasten Profiles 8 to the Bearing Carriage.
60.7
82
□40
25.
6
M6/8
46
57
