* normally not available from stock
Guide tube DIN 2391
Steel chrome-plated SCR
End pieces / Slider
black, RAL 9005, textured finish
Fixing surface / mounting surface
Spindle with trapezoidal thread
Follower nut, gun metal
Cylinder head screw DIN 912 /
Hexagon nuts DIN 985
Steel, zinc plated
In addition to the standard travel lengths specified in the above table for the double tube linear actuator GN 491 any length inside the maximum length is available.
In order to measure the movement and positioning of the sliders, digital position indicators can be added.
Horizontal with screws for thread d4 or bore d5
From outside, with screws for thread d3
From inside, with screws for bore d6
From inside, with screws for bore d5 / d7
Mounting with screws for thread d4 or bore d5
Useage of installation kit, position indicator and handwheel, see table
|d||Fx in N||Fy in N for length l =||-||-||Fz in N for length l =||-||-||Mx||My||Mz|
|-||-||500||1000||1500||500||1000||1500||in Nm||in Nm||in Nm|
The specified forces Fy and Fz cause a flexure of the guide tube of approx. 0.5 mm.
The silder is moved cia a bearing-type trapezoidal thread spindle and a aguide 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 speed of as much as 250 rpm.
The positioning accuarcy is 0.2 mm / 300 mm travel, the maximum revers play is 0.1 mm.
To measure the adjustment or the positioning, digital position indicators DD52R / DD51 may be attached.
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