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Installation Guide Linear Modules
3 Operating Instructions
3.1 Operating Conditions
•
The ambient temperature limit is enclosed: 0 °C
•
The maximum sensor temperature is enclosed: 120 °C
•
Max. set up altitude:
The maximum installation altitude is 4000 metres above sea level.
From 1000m, a derating of 0.5% per 100m must be taken into account for the nominal
force with air cooling.
1)
Lower temperatures possible upon request.
3.2 Dynamic Properties
In contrast to guide systems with rolling elements (< 50 m/s2), SM01 modules with plain bearings have no
restrictions with regard to the permitted acceleration values. In principle, any speeds can also be run.
However, it should be noted that the service life of the plain bearings corresponds in the first approximation
to the product of "speed x bearing contact force". Speeds in excess of 1 m/s should be avoided, particularly
in dry running.
3.3 Guide Accuracy
In contrast to a bearing arrangement based on rolling elements (linear ball bearings), the operating principle
of plain bearings is based on a sufficiently large bearing clearance. This is in the order of magnitude of
approx. 0.1 mm and can increase accordingly during the service life of the bearing. The accuracy of a
cantilever bearing system designed with plain bearings is therefore inevitably lower than that of a
comparable bearing arrangement based on preloaded rolling bearings.
As with all cantilever guide systems, the load-dependent deflection of the guide rods must also be taken into
account. In addition, it should be noted that a change in load direction also causes a displacement based on
the height of the bearing clearance.
4 Installation Instructions
4.1 Mounting the Linear Module
Always observe the safety instructions in chapter 2 during installation!
For easy mounting of the linear module, the guide block is provided with fits for dowel pins and threaded
holes on the underside. The exact positions are given in chapter 12.
The linear module can be mounted horizontally or vertically on a mounting surface using the threaded holes
and fits provided. As the SM01 modules are a cantilever system, tolerances have a correspondingly strong
effect and may require readjustment depending on the application. In this case, the use of the fits with dowel
pins should be avoided. For vertical mounting, the MagSpring® vertical load compensation is recommended.
See chap. 4.3
NTI AG / LinMot
1)
SM01-37 / SM01-48
...80 °C
ENG
Page 9 / 85
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