Description Lightweight precision tandem housing (aluminum) Two Super Linear Bushings A External seals Relubricatable Features Also available as Linear Motion Slide. Product description For precision guides with easy installation. Fixed working bore diameter. Technical data General technical data Ø d mm 12 16 20 25 30 40 50 amax m/s² 150 vmax 1) m/s 3 m kg 0.27 0.41 0.72 1.35 2.01 3.67 6.3 FR 2) N 0.8 1 1.5 2 2.5 3 4 Breakaway force N 1.5 2 3 4.5 6 8 10 Shaft radial clearance h6 µm + 38 + 10 + 43 + 11 + 50 + 12 Operating conditions Permissible ambient temperature (min ... max) -10 °C ... +80 °C 1) Speeds of up to 5 m/s possible. Service life is limited by heightened wear to plastic parts. Tests have shown total travel from 50 • 105 m to 100 • 105 m without failure. 2) Frictional drags generated by Linear Bushings with integrated wiper seals on two sides when not under radial load. The frictional drags depend on speed and lubrication. Load capacities and load moments Ød mm 12 16 20 25 30 40 50 C 1) N 1660 2430 4010 8180 9520 16360 23930 C0 1) N 980 1660 2680 4940 7140 11140 16560 ML Nm 26 18 84 141 289 576 1097 ML0 Nm 16 13 54 86 206 374 725 1) Load rating when both Linear Bushings are under equal load. The load ratings apply for the main direction of loading. If the load direction is not the main direction of loading, the dynamic load ratings must be multiplied by the following factors:Ø d 10 to 16: f = 0.82, f0 = 0.86,Ø d 20 to 50: f = 0.82, f0 = 0.78 The load ratings are based on a total travel of 100, 00 m. When based on 50 000 m, the values in the table need to be multiplied by 1.26. Legend Symbol Description Unit Ød Shaft diameters mm amax Maximum acceleration travel m/s2 C Dynamic load capacity N C0 Static load capacity N FR Friction force N m Mass kg ML Dynamic longitudinal moment load capacity Nm ML0 Static longitudinal moment load capacity Nm vmax Maximum permissible speed m/s Impact of load direction on load rating of closed Linear Bushings The listed load ratings should be chosen depending on installation in minimum or maximum position and should be based on the calculations. If the load direction is clearly defined and the Linear Bushings can be installed in maximum position, the load ratings Cmax. (dynamic load rating) and C0 max (static load rating) can be used. If aligned installation is not possible or the load direction is not defined, the minimum load ratings must be used. Reduced load capacity with short stroke In case of short stroke, the service life of the shaft is less than that of the super Linear Bushing. The load ratings C specified in the tables must therefore be multiplied by the factor f.s . 1) fs = factor 2) s = movement path Reduced load capacity with high load If the load F on a Super Linear Bushing A is more than F > 0.5 x C, the dynamic load rating C decreases. Definition of dynamic load ratings Self-alignment feature The self-alignment feature in the steel bearing plates and machined ball guide grooves ensure qu
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