Description Lightweight precision housing (aluminum) Super Linear Bushing B without self-alignment feature External seals Relubricatable Product description For precision guides with easy installation. Fixed working bore diameter. Technical data General technical data Ø d mm 10 12 16 20 25 30 40 50 amax m/s² 150 vmax 1) m/s 3 m kg 0.1 0.13 0.2 0.34 0.65 0.97 1.8 3 FR 2) N 0.5 0.8 1 1.5 2 2.5 3 4 Breakaway force N 1 1.5 2 3 4.5 6 8 10 Shaft radial clearance h6 µm + 36 + 9 + 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 10 12 16 20 25 30 40 50 C 1) N 730 1020 1250 2470 4820 5860 10070 14730 C0 1) N 380 490 620 1340 2790 3570 5570 8280 1) The load ratings apply for the main direction of loading. If the load direction is not the main direction of loading, the 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 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 Definition of dynamic load ratings Dimensions a) Lubricating hole sealed with plastic cap Dimensions Ød mm 10 12 16 20 25 30 40 50 D mm 19 22 26 32 40 47 62 75 A mm 40 43 53 60 78 87 108 132 E1 29 mm ±0.15 32 mm ±0.15 40 mm ±0.15 45 mm ±0.15 60 mm ±0.15 68 mm ±0.15 86 mm ±0.15 108 mm ±0.2 E2 20 mm ±0.15 23 mm ±0.15 26 mm ±0.15 32 mm ±0.15 40 mm ±0.15 45 mm ±0.15 58 mm ±0.15 50 mm ±0.2 E3 mm 31 34 42 50 64 72 90 108 E4 mm 29 32 35 45 20 30 35 42 H mm 16 18 22 25 30 35 45 50 Tolerance for H 1) µm + 8 - 16 H1 mm 31.5 35 42
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