Standard_Parts_Catalogue

Page 1994 | 3.8 Adjusting, Moving with Guides, Spindles and Ball Rollers GN 491 GN 492 The specified forces Fy and Fz cause a flexure of the guide tube of approx. 0,5 mm. Description The slider is moved via a bearing-type trapezoidal thread spindle and a guide nut. The slider is guided through two parallel chrome-plated tubes, resulting in a high load capacity and allowing high bending moments to be compensated by the linear actuator. For type GN 492, a second slider and an adapter plate extend the options for applications. These double tube linear actuators have been designed for manual operation (handwheel). With the appropriate lubrication, they can also absorb rotary spindle speeds of as much as 250 rpm. The positioning accuracy is 0,2 mm / 300 mm travel, the maximum reverse play is 0,1 mm. To measure the adjustment or the positioning, digital position indicators GN 953 / GN 954 / GN 9053 / GN 9054 → Page 396 / 398 / 402 / 404 may be attached. The required extension of the shaft journal is enabled by installation kits GN 491.1 → Page 2003. Further information see on the standard pages of GN 491 / GN 492 → Page 1996 / 2000 . d Fx in N Fy in N for length l = Fz in N for length l = Mx My Mz GN 491  500 1000 1500  500 1000 1500 in Nm in Nm in Nm 18  425  215  110 -  105   80 -  22  35  40 30  850 1100  900 550 600 350 150 100 100 100 40 1100 3700 2800 1400 2100  600 130 150 140 170 50 1900 3850 2400 2100 3100  700 200 180 220 290 60 2700 6900 5700 5100 6300 2800 360 320 350 500 d Fx in N Fy in N for length l = Fz in N for length l = Mx My Mz GN 492 500 1000 1500  500 1000 1500 in Nm in Nm in Nm 18  425   290 180 -  140  105 -  42  50  75 30  850 1550 1300  800 700 550 250 150 150 200 40 1100  6400 3400 1900 2400 750 230 180 210 260 50 1900 7500 5100 2700 3400 850 340 250 350 530 60 2700 11500 9500 8200 7500 3100 610 550 650 980 Double Tube Linear Actuators Technical Description