Description Precision flanged housing (lamellar graphite cast iron) Super Linear Bushing B without self-alignment feature Two retaining rings with two additional spacer rings (steel) for shaft diameters 12 to 40 Integrated wiper seals Radial clearance not adjustable Features No initial lubrication Product description This modular unit complements the Linear Set series and is used for designs with a vertical shaft. 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 0.095 0.16 0.3 0.57 1.85 1.65 3.4 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 N 830 1020 2020 3950 4800 8240 12060 C0 N 420 530 1050 2180 2790 4350 6470 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 Dimensions Ød mm 12 16 20 25 30 40 50 D mm 22 26 32 40 47 62 75 B 1) mm 42 50 60 74 84 108 130 D1 24 mm +0.8 28.5 mm +0.8 35 mm +0.8 43 mm +0.8 49.5 mm +0.8 66.5 mm +0.8 81 mm +0.8 D2 1) mm 28 34 42 54 62 80 98 E 30 mm ±0.12 35 mm ±0.12 42 mm ±0.15 54 mm ±0.15 60 mm ±0.25 78 mm ±0.25 98 mm ±0.25 L mm 32 36 45 58 68 80 100 L1 mm 12 15 18 23 26 36 72 L1 12 mm 15 mm 18 mm 23 mm 26 mm 36 mm 72 mm S H13 mm 5.5 6.6 9 11 V 1) mm 6 8 10 12 14 16 18 W mm 10 10.5 13.5 17.5 21 22 14 1) Tolerance ISO 8062-3 - DCTG 9. Project planning information Life expectancy calculation Mounting Rad
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