Description High-precision Linear Bushing for moving heavy loads Hardened steel load-bearing plates with machined ball guide grooves and machined steel load-bearing plate back for maximum precision Super H with even more running tracks for maximum dynamic load rating and rigidity Compensates for shaft deflection and misalignment up to 30' High travel speed (5 m/s) Features With longitudinal seal Optional integrated, double-lipped wiper seals POM ball retainer Balls made of rolling bearing steel Two metal holding rings Technical data General technical data Ø d mm 20 25 30 40 50 amax m/s² 150 vmax m/s 5 m kg 0.075 0.16 0.25 0.5 0.9 FR 1) 2) N 2.5 4 3) 3 4.5 3) 4 6 3) 5 7.5 3) 6 9 3) Breakaway force 1) N 5 7.5 3) 7 10.5 3) 9 13.5 3) 12 18 3) 15 22.5 3) μ 4) 0,001 ... 0,004 Rows of balls 8 10 Shaft radial clearance h6/bore H7 µm + 43 + 11 + 50 + 12 Shaft radial clearance h6/bore K7 µm + 25 - 7 + 29 - 7 Shaft radial clearance h6/bore M7 µm + 18 - 14 + 20 - 18 Operating conditions Permissible ambient temperature (min ... max) -20 °C ... +80 °C 1) One wiper seal: Multiply by a factor of 0.5. 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. 3) For fully sealed Linear Bushings 4) Friction coefficients of unsealed Linear Bushings when lubricated with oil. The friction coefficient is lowest under heavy load, but can still be above the specified value even under a low load. Load capacities and load moments Ød mm 20 25 30 40 50 C 1) N 3530 6190 6300 13500 22300 C0 1) N 2530 4530 7180 10400 16800 1) The load ratings apply for the main direction of loading. 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 μ Friction coefficient See "Technical data – Load direction factors" and the diagrams/characteristic curves section for exact values for the 4 main directions of loading. For load in the direction of opening, please refer to the loading diagrams (see "Diagrams" section). Effect of load direction on load rating a) Closed b) Open Main direction of loading Load direction factors The load ratings C and C0 apply for the load direction ρ = 0°. For all other load directions, the load ratings must be multiplied by the factors fr (dynamic load rating C) or fρ0 (static load rating C0). Load direction factor Super SH Shaft Load direction factor (dynamic load capacity) Ø d (mm) ⇩ ⇒⇐ ⇑ ⇩ ⇒⇐ ⇑ 20 - 25 1 0,79 1 1 0,79 0,52 30 - 60 1 0,86 1 1 0,86 0,59 Load direction factor (static load capacity) 20 - 25 1 0,68 1 1 0,68 0,50 30 - 60 1 0,83 1 1 0,83 0,55 Reduced load capacity with short stroke In case of short stroke, the service life of the shaft is less than that
Бесплатная доставка по РФ при заказе от 50 000 р.
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