Description Rugged all-metal design with steel ball retainer for harsh environments and heavy contamination Many pockets acting as lubricant reservoirs for extended lubrication intervals or lubrication for life Seal-free and with steel ball retainers for temperatures well above 80 °C or vacuumed applications Radial clearance adjustable Integrated wiper seals for high contamination Features For use in woodworking, foundries, cement plants Pockets collect any dirt that may have worked its way in to prevent the Linear Bushing from jamming. No wiper seals, come with integrated steel retaining rings; higher temperatures allowed with shaft diameters 12 and higher Hardened and machined outer sleeve Steel ball retainer (shaft diameters 5 and 8 with plastic retainer made of PA) Balls made of rolling bearing steel Technical data General technical data Ø d mm 5 8 12 16 20 25 30 40 50 60 80 amax m/s² 100 50 vmax m/s 2.5 2 m kg 0.01 0.02 0.04 0.05 0.1 0.19 0.32 0.62 1.14 2.11 4.7 FR 1) 2) N 0.4 0.5 2 3 4 5 6 8 10 12 15 Breakaway force 1) N 0.8 1 6 9 12 14 18 24 30 36 45 μ 3) 0,001 ... 0,004 Rows of balls 4 5 6 Shaft radial clearance h6/bore H7 µm + 34 + 11 + 36 + 13 + 41 + 14 + 43 + 14 + 49 + 16 + 50 + 17 + 60 + 20 + 68 + 22 + 71 + 24 Shaft radial clearance h6/bore K7 µm + 22 - 1 + 24 - 1 + 26 - 1 + 28 - 1 + 31 - 2 + 32 - 1 + 39 - 1 + 43 - 1 + 46 - 1 Operating conditions Permissible ambient temperature (min ... max) 4) -10 °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) 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. 4) Only unsealed Linear Bushings with steel ball retainers may be used at higher temperatures. Make allowance for reductions in load capacity. Load capacities and load moments Ød mm 5 8 12 16 20 25 30 40 50 60 80 Cmin N 180 320 420 580 1170 2080 2820 5170 8260 11500 21000 Cmax N 210 370 480 670 1390 2480 2980 5480 8740 12100 22200 C0min N 140 240 280 440 860 1560 2230 3810 6470 9160 16300 C0max N 200 330 400 620 1250 2280 2860 4880 8280 11730 20850 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 Cmax Maximum dynamic load rating N Cmin Minimum dynamic load rating N C0max Maximum static load rating N C0min Minimum static load rating N FR Friction force N m Mass kg vmax Maximum permissible speed m/s μ Friction coefficient 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 directi
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