GN 491 Double tube linear actuators with right or left hand thread, single slider


  • RoHS

Description

Specification

Types

  • Type R1: Right hand thread, shaft journal at one end
  • Type R2*: Right hand thread, shaft journal at boths ends
  • Type L1*: Left hand thread, shaft journal at one end
  • Type L2*: Left hand thread, shaft journal at both ends
* normally not available from stock
Guide tube DIN 2391
Steel chrome-plated SCR
End pieces / Slider
Aluminium
plastic coated
black, RAL 9005, textured finish
Fixing surface / mounting surface
machined, blank
Spindle with trapezoidal thread
  • Steel, blank
  • with ball-bearing
  • Positioning accuracy ±0.2 mm/300 mm travel
Follower nut, gun metal
Cylinder head screw DIN 912 /
Hexagon nuts DIN 985
Steel, zinc plated

Information

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.

Accessory

  • Installation kits GN 491.1  for position indicators

Technical information

Mounting facilities

Mounting facilities of the end pieces

Horizontal with screws for thread d4 or bore d5

Vertical
From outside, with screws for thread d3
From inside, with screws for bore d6
From inside, with screws for bore d5 / d7

Mounting facilities at the slider

Mounting with screws for thread d4 or bore d5

Assembly of position indicator and handwheel

Useage of installation kit, position indicator and handwheel, see table

Technical description

dFx in NFy in N for l =--Fz in N for l =--MxMyMz
--5001000150050010001500in Nmin Nmin Nm
18425215110-10580-223540
308501100900550600350150100100100
4011003700280014002100600130150140170
5019003850240021003100700200180220290
602700690002700510063002800360320350500
The specified forces Fy and Fz cause a flexure of the guide tube of approx. 0.5 mm.

Description

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.

Designs

Double tube linear actuators with right or left hand thread, single slider GN 491
GN 491
Filter
Description d1 l1 Max. travel Shaft thread b d2 d3 d4 d5 d6 d7 For screw DIN 912 h1 h2 h3 h4 h5 l2 l3 l4 m1 m2 m3 m4 m5 m6 m7 m8 m9 s Shaft key
spring DIN 6885
Position
indicator
Handwheel Weight
GN 491-18-100-R1-SCR 18 100 420 TR10x3 28 6 - M 5*** 5.3 - - - 28 29 1 14.5 0.75 3xb+l5+l1 81 16 2xb+l5+l1 68 - 20 - 20 18 - 4.5 8 A2x2x12 DD50 GN 923.18 1020
GN 491-18-150-R1-SCR 18 150 420 TR10x3 28 6 - M 5*** 5.3 - - - 28 29 1 14.5 0.75 3xb+l5+l1 81 16 2xb+l5+l1 68 - 20 - 20 18 - 4.5 8 A2x2x12 DD50 GN 923.18 1120
GN 491-18-200-R1-SCR 18 200 420 TR10x3 28 6 - M 5*** 5.3 - - - 28 29 1 14.5 0.75 3xb+l5+l1 81 16 2xb+l5+l1 68 - 20 - 20 18 - 4.5 8 A2x2x12 DD50 GN 923.18 1200
GN 491-18-250-R1-SCR 18 250 420 TR10x3 28 6 - M 5*** 5.3 - - - 28 29 1 14.5 0.75 3xb+l5+l1 81 16 2xb+l5+l1 68 - 20 - 20 18 - 4.5 8 A2x2x12 DD50 GN 923.18 1360
GN 491-30-100-R1-SCR 30 100 1500 TR14x4 50 8 M 6** M 6*** 6.5 9 10.5 M 6 52 54 2 27 0.85 3xb+l5+l1 130 16 2xb+l5+l1 114 92 30 35 30 42 9.5 12 10 A2x2x12 DD51|DD51-E GN 923.30 4000
GN 491-30-150-R1-SCR 30 150 1500 TR14x4 50 8 M 6** M 6*** 6.5 9 10.5 M 6 52 54 2 27 0.85 3xb+l5+l1 130 16 2xb+l5+l1 114 92 30 35 30 42 9.5 12 10 A2x2x12 DD51|DD51-E GN 923.30 4340
GN 491-30-200-R1-SCR 30 200 1500 TR14x4 50 8 M 6** M 6*** 6.5 9 10.5 M 6 52 54 2 27 0.85 3xb+l5+l1 130 16 2xb+l5+l1 114 92 30 35 30 42 9.5 12 10 A2x2x12 DD51|DD51-E GN 923.30 4500
GN 491-30-300-R1-SCR 30 300 1500 TR14x4 50 8 M 6** M 6*** 6.5 9 10.5 M 6 52 54 2 27 0.85 3xb+l5+l1 130 16 2xb+l5+l1 114 92 30 35 30 42 9.5 12 10 A2x2x12 DD51|DD51-E GN 923.30 4900
GN 491-40-100-R1-SCR 40 100 2650 TR20x4 60 12 M 8** M 8*** 6.5 13.5 13.5 M 8 60 63 3 31.5 1.05 3xb+l5+l1 180 17 2xb+l5+l1 160 132 39 38 39 62 12.5 12 13 A4x4x12 DD52R|DD52R-E GN 924.40 8650
GN 491-40-150-R1-SCR 40 150 2650 TR20x4 60 12 M 8** M 8*** 8.5 13.5 13.5 M 8 60 63 3 31.5 1.05 3xb+l5+l1 180 17 2xb+l5+l1 160 132 39 38 39 62 12.5 12 13 A4x4x12 DD52R|DD52R-E GN 924.40 9000
GN 491-40-200-R1-SCR 40 200 2650 TR20x4 60 12 M 8** M 8*** 8.5 13.5 13.5 M 8 60 63 3 31.5 1.05 3xb+l5+l1 180 17 2xb+l5+l1 160 132 39 38 39 62 12.5 12 13 A4x4x12 DD52R|DD52R-E GN 924.40 9651
GN 491-40-300-R1-SCR 40 300 2650 TR20x4 60 12 M 8** M 8*** 8.5 13.5 13.5 M 8 60 63 3 31.5 1.05 3xb+l5+l1 180 17 2xb+l5+l1 160 132 39 38 39 62 12.5 12 13 A4x4x12 DD52R|DD52R-E GN 924.40 10150
GN 491-50-100-R1-SCR 50 100 2760 TR20x4 72 12 M 10** M 8*** 8.5 13.5 13.5 M 8 72 76 4 38 1.2 3xb+l5+l1 206 18 2xb+l5+l1 184 150 46 50 46 62 13 15 13 A4x4x12 DD52R|DD52R-E GN 924.50 14000
GN 491-50-150-R1-SCR 50 150 2760 TR20x4 72 12 M 10** M 8*** 8.5 13.5 13.5 M 8 72 76 4 38 1.2 3xb+l5+l1 206 18 2xb+l5+l1 184 150 46 50 46 62 13 15 13 A4x4x12 DD52R|DD52R-E GN 924.50 14440
GN 491-50-200-R1-SCR 50 200 2760 TR20x4 72 12 M 10** M 8*** 8.5 13.5 13.5 M 8 72 76 4 38 1.2 3xb+l5+l1 206 18 2xb+l5+l1 184 150 46 50 46 62 13 15 13 A4x4x12 DD52R|DD52R-E GN 924.50 14860
GN 491-50-300-R1-SCR 50 300 2760 TR20x4 72 12 M 10** M 8*** 8.5 13.5 13.5 M 8 72 76 4 38 1.2 3xb+l5+l1 206 18 2xb+l5+l1 184 150 46 50 46 62 13 15 13 A4x4x12 DD52R|DD52R-E GN 924.50 16020
GN 491-60-300-R1-SCR 60 300 2740 TR25x5 80 14 M 10** M 10*** 10.5 13.5 16.5 M 10 86 88 2 44 1.35 3xb+l5+l1 240 19 2xb+l5+l1 216 185 55 60 55 74 14 16.5 17 A5x5x16 DD52R|DD52R-E GN 924.60 26900
GN 491-60-400-R1-SCR 60 400 2740 TR25x5 80 14 M 10** M 10*** 10.5 13.5 16.5 M 10 86 88 2 44 1.35 3xb+l5+l1 240 19 2xb+l5+l1 216 185 55 60 55 74 14 16.5 17 A5x5x16 DD52R|DD52R-E GN 924.60 28550
GN 491-60-500-R1-SCR 60 500 2740 TR25x5 80 14 M 10** M 10*** 10.5 13.5 16.5 M 10 86 88 2 44 1.35 3xb+l5+l1 240 19 2xb+l5+l1 216 185 55 60 55 74 14 16.5 17 A5x5x16 DD52R|DD52R-E GN 924.60 30200