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 Optional integrated wiper seals Stainless steel for the medical, chemistry and food industries Closed, for self-supporting shafts 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. Balls made of stainless steel comparable to 1.4125 Hardened and machined outer sleeve made of stainless steel comparable to 1.4125 Ball retainer made of stainless steel comparable to 1.4301 Integrated retaining rings made of stainless steel comparable to 1.4006 or wiper seals Technical data General technical data Ø d mm 3 4 5 8 10 12 16 20 25 30 40 amax m/s² 100 vmax m/s 2.5 m kg 01 02 0.011 0.022 0.036 0.045 0.06 0.1 0.235 0.36 0.77 FR N - 0.4 1) 2) 0.5 1) 2) 1 1) 2) 2 1) 2) 3 1) 2) 4 1) 2) 5 1) 2) 6 1) 2) 8 1) 2) Breakaway force N - 0.8 1) 1 1) 2 1) 6 1) 9 1) 12 1) 14 1) 18 1) 24 1) μ 3) 0,001 ... 0,004 Rows of balls 4 5 6 Working bore diameter tolerance µm + 8 0 + 11 + 1 + 12 + 2 + 8 0 + 12 + 2 + 14 + 2 + 16 + 2 + 19 + 2 Shaft radial clearance h6 4) µm + 12 + 2 + 14 + 2 + 16 + 4 + 18 + 5 + 20 + 5 + 22 + 5 + 23 + 6 + 25 + 6 + 30 + 7 Operating conditions Permissible ambient temperature (min ... max) 5) -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) Determined from working bore diameter and shaft tolerance statistics. Recommended housing bore tolerance: H6 or H7. 5) 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 3 4 5 8 10 12 16 20 25 30 40 Cmin N 55 70 160 210 300 400 460 680 780 1250 1720 Cmax N 65 80 185 240 350 460 530 800 830 1320 1820 C0min N 45 60 180 235 260 420 440 860 1620 2000 3300 C0max N 65 85 250 330 370 600 630 1250 2100 2500 4200 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 maxi
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