GN 2422 Cam roller linear guide rails for linear guide rail systems, C-profile


  • RoHS

Description

Specification

Types

  • Type UT: Floating bearing rail, with mounting hole for flat head screw
  • Type UV: Floating bearing rail, with mounting hole for countersunk screw
  • Type XT: Fixed bearing rail, with mounting hole for flat head screw
  • Type XV: Fixed bearing rail, with mounting hole for countersunk screw
Heat treatable steel
  • zinc plated, blue passivated
  • Raceways hardened, ground
Flat head screws (only for type UT / XT)
Steel, zinc plated, blue passivated

Information

Cam roller linear guide rails GN 2422 can be combined with cam roller carriages GN 2424 or cam rollers GN 2426 to construct linear guide rail systems. These space-saving units are used, for example, for carrying sliding doors, or in mechanical engineering or jigmaking for the linear movement of plant equipment.
These systems feature high stability and quiet running at high traversal speeds. Thanks to the option of combining fixed and floating bearing rails, they cause no great stress to the surrounding construction, and thus allow parallelism errors to be compensated for. Flat head screws with low head are included with the rail types UT and XT.

Accessory

On request

  • other rail lengths (up to max. 3600 mm)
  • other fixing hole distance m1/m2

Structure and Components

Linear guide rail systems allow the reliable and economical linear movement of hardware modules. Their outstanding attributes are low-maintenance operation, long service life and quiet running. These are attributes which make roller guide systems indispensable components for efficient and safe movement of devices, and meet the needs of facilities with low energy requirements.The product range includes all components necessary for constructing linear guide rail systems that are compact and easy to assemble and install. All inear guide rail systems consist of one outer rail with rollers or roller carriages moving inside the rail.Rails are the foundations for linear guide rail systems. They can be constructed as fixed or floating bearing versions, with the fixed bearing type guiding the rollers running inside the rail on two levels, while the floating bearing type does so only on one level. By combining both versions, any misalignments or parallelism errors in the connected construction can be corrected. Complex preliminary work caused by the precision machining of surrounding parts can thus be kept to a minimum. Both rail versions can be mounted in one of two ways: cylindrical countersunk holes, or 90° conical holes for self-centering.Cam roller carriages are available in 3 different types of designs, differing by their radial or axial assembly arrangement, their material, and their degree of sealing. All cam roller carriages consist of 3 rollers, with the middle one always supplied with an eccentrically adjustable bearing pivot for determining the initial tension or the clearance/play inside the rail. Depending on the rail version, a wiper is mounted on either end of the roller carriage.Cam rollers are similar in structure to deep-groove ball bearings, with a non-detachable bearing pivot used as mounting point.For special applications, cam rollers and wipers can also be supplied separately from the cam roller carriages under separate standards.All design variants are available in the nominal rail dimensions h1 = 18, 28, 35 and 43 mm. Beyond the standard range, they can also be supplied in lengths of up to 3600 mm in one piece, or as combined rails for individual and customized requirements.
To insure maximum flexibility, linear guide rail systems are made from the components listed below. Depending on the requirement, the appropiate components can be supplied in the desired quanitity. Because the linear guide rails and the cam roller carriages must be assembled separately in many applications, these items will be supplied unsassembled and packed seperately.
Upon requested, fully pre-assembled cam roller linear guide rail systems including rails GN 2422 and cam roller carraiges GN 2424 are available.

Assembly examples

Precision and Assembly

Tolerance for mounted linear guide rail systems

In the combination of rails GN 2422 and cam roller carriages GN 2424, the following dimensions / tolerances exist.
In the combination of rails GN 2422 and cam roller carriages GN 2424 
If several cam roller carriages are installed into one rail, an offset x can occur between the cam roller carriages which must be added to the dimension h2.

h1bh2x
18 +0.25/-0.10+0.15/-0.16+0.25/-0.25± 0.20
28 +0.25/-0.10+0.25/-0.10+0.15/-0.35± 0.20
35 +0.35/-0.10+0.25/-0.10+0.10/-0.30± 0.20
43 +0.36/-0.10+0.25/-0.10+0.20/-0.35± 0.20

Guidance accuracy

Linear guide rail systems feature the linear guidance accuracy shown in the diagram.

Permissible height offset

The fixed and floating bearing principle ensures that misalignments in the base construction are compensated. However, when using Type UV / UT and XV / XT rails, certain limits should not be exceeded. The following table shows the maximum permissible angle of the height offset of the fixed and floating bearing rails. Please note that the load rating must be reduced by 30% once the specified value is reached.
To calculate h2, the following equation should be used: h2 = a x tan w, with the tabular values shown below used for w.
Example: h1 = 43, a = 650 mm, w max. = 0.171°
h2 = 650 mm x tan 0.171° = 1.94 mm

h1w max.
180.057°
280.143°
350.151°
430.171°

Permissible lateral offset

It is possible to compensate for angular defects and the offset of the mounting surface with the help of fixed and floating bearing rails. The permissible offset of cam rollers and cam roller carriages in the Type UT / UV rails is given by the values for x and z. The reference is the nominal middle of the raceway bm.
A parallelism or angular error can thus be compensated for across the whole length of the rail, which corresponds to an offset from the sum of the values for x and z.

h1b mxz
186.31.10.3
288.61.30.7
3510.52.71.3
4314.52.51.5

Support widths

To guarantee the proper running motion, outside dimensions must be observed during the assembly of linear guide rail systems. Suitable components include supports at the rail and at the roller carriage which should not be smaller than the widths a or b. Also, forces acting from the outside can thus be transferred reliably from the linear guide rail systems without submitting the mounting screw to shear stress.

h1ab
1854
2884
35115
43145

Tightening torque

When positioning the rails with countersunk mounting holes, Type UT and XT, make sure the surface is flat and the mating tapped holes are tapped deep enough so the flat head screw is flush with the rail.
The specified tightening torque of the flat head screws must be maintained.

h1ScrewA/F DriveTightening torque
18M 4 x 8T203 Nm
28M 5 x 10T259 Nm
35M 6 x 12T3014 Nm
43M 8 x 16T4024 Nm

Technical information

Traversal speed

Depending on application and installation length, the maximum traversal speed of cam roller linear guide rail systems is 7 m/s.

Lubrication

Once the cam roller carriage has been placed in the rail, it is recommended to slightly grease the raceway surfaces of the rail with a heavy duty lubricant for linear guide rail systems, such as Klüberplex BE 31-222, using a brush.
Check the lubricant film at regular intervals for any dirt or pollution, e.g. with metal chips.
In the event of visible pollution or clear discoloration of the lubricant, use a clean rag to clean the rails and the rollers and apply new lubricant.
Applying new lubricant is normally necessary once a year or after 100 km of running distance.

Operational temperatures

The components of the roller guide systems are suitable for use in a temperature range of -30 °C to 130 °C.

Instructions for installation

Linear guide rail systems consist of a cam roller linear guide rail GN 2422 and a cam roller carriage GN 2424 
All components are packed separately and supplied not assembled. When delivered, the play between cam roller carriage and rail is not preset.
During assembly, set the cam roller carriage as follows:
1. Make sure that the raceways and the cam rollers are clean.
2. Slightly loosen the mounting screw of the central, eccentrically adjustable roller and insert the cam roller carriage (without the wipers supplied) into the rail (see also items 4 and 6).
3. Position the cam roller carriage at one end of the rail. For the floating bearing rails of Type UT and UV, a thin and stable support (e.g. open-end wrench or a feeler gauge) must be placed underneath the ends of the cam roller carriage body and the rail to ensure the parallel alignment of the cam roller carriage in the level raceways.

4. Insert the open-end wrench GN 2424.1 (included) between the eccentric cam roller and the cam roller carriage body. (The centering bores to the left and right mark the position of the running side of the concentric cam rollers / load-bearing cam rollers.)

5. Turning the open-end wrench clockwise will press the cam roller to be adjusted against the top raceway which will set the roller carriage free of play. Excessive pre-tensioning must be avoided because this will increase friction and reduce useful service life.
6. While using the open-end wrench to hold the bearing pivot in the correct position, the mounting screw may be moderately tightened. The correct tightening torque will be checked later.

7. Move the cam roller carriage in the rail and make sure that the play / the moderate pre-tensioning is constant along the full length of the rail. The running motion should be free-moving, with the cam roller carriage having any play or jamming at no point inside the rail.
8. Now tighten the mounting screw with the recommended tightening torque shown in the table, with the open-end wrench holding the angular position of the cam rollers in place.
h1Tightening torque
183 Nm
287 Nm
357 Nm
4312 Nm
9. Now mount the wipers, and for cam rollers carriage type N, the longitudinal seal. To do so, remove the cam roller carriage from the rail.
10. Before reinserting the cam roller carriage, make sure that the raceways / rollers are properly lubricated using a heavy duty lubricant for linear guidance.

Cam roller linear guide rails for linear guide rail systems, C-profile GN 2422
GN 2422
Filter
Description h1 l1 m1 b1 d1 d2 d3 d4 l2 m2 s1 s2 A/F Weight
GN 2422-18-240-40-UT 18 240 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 132
GN 2422-18-400-40-UT 18 400 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 220
GN 2422-18-560-40-UT 18 560 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 308
GN 2422-18-800-40-UT 18 800 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 440
GN 2422-18-1040-40-UT 18 1040 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 572
GN 2422-18-1200-40-UT 18 1200 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 660
GN 2422-28-400-40-UT 28 400 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 484
GN 2422-28-560-40-UT 28 560 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 678
GN 2422-28-800-40-UT 28 800 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 968
GN 2422-28-1040-40-UT 28 1040 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 1258
GN 2422-28-1200-40-UT 28 1200 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 1452
GN 2422-28-1440-40-UT 28 1440 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 1742
GN 2422-35-400-40-UT 35 400 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 636
GN 2422-35-560-40-UT 35 560 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 890
GN 2422-35-800-40-UT 35 800 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 1272
GN 2422-35-1040-40-UT 35 1040 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 1654
GN 2422-35-1200-40-UT 35 1200 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 1108
GN 2422-35-1440-40-UT 35 1440 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 2290
GN 2422-43-400-40-UT 43 400 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 1004
GN 2422-43-560-40-UT 43 560 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 1406
GN 2422-43-800-40-UT 43 800 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 2008
GN 2422-43-1040-40-UT 43 1040 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 2610
GN 2422-43-1200-40-UT 43 1200 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 3012
GN 2422-43-1520-40-UT 43 1520 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 3815
GN 2422-43-2000-40-UT 43 2000 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 5020
GN 2422-18-240-40-UV 18 240 40 8.3 4.5 - - - 8 80 2.8 - - 132
GN 2422-18-400-40-UV 18 400 40 8.3 4.5 - - - 8 80 2.8 - - 400
GN 2422-18-560-40-UV 18 560 40 8.3 4.5 - - - 8 80 2.8 - - 308
GN 2422-18-800-40-UV 18 800 40 8.3 4.5 - - - 8 80 2.8 - - 440
GN 2422-18-1040-40-UV 18 1040 40 8.3 4.5 - - - 8 80 2.8 - - 572
GN 2422-18-1200-40-UV 18 1200 40 8.3 4.5 - - - 8 80 2.8 - - 660
GN 2422-28-400-40-UV 28 400 40 12.3 5.5 - - - 10 80 4 - - 484
GN 2422-28-560-40-UV 28 560 40 12.3 5.5 - - - 10 80 4 - - 678
GN 2422-28-800-40-UV 28 800 40 12.3 5.5 - - - 10 80 4 - - 968
GN 2422-28-1040-40-UV 28 1040 40 12.3 5.5 - - - 10 80 4 - - 1258
GN 2422-28-1200-40-UV 28 1200 40 12.3 5.5 - - - 10 80 4 - - 1452
GN 2422-28-1440-40-UV 28 1440 40 12.3 5.5 - - - 10 80 4 - - 1742
GN 2422-35-400-40-UV 35 400 40 16.5 6.5 - - - 12 80 3.5 - - 636
GN 2422-35-560-40-UV 35 560 40 16.5 6.5 - - - 12 80 3.5 - - 890
GN 2422-35-800-40-UV 35 800 40 16.5 6.5 - - - 12 80 3.5 - - 1272
GN 2422-35-1040-40-UV 35 1040 40 16.5 6.5 - - - 12 80 3.5 - - 1654
GN 2422-35-1200-40-UV 35 1200 40 16.5 6.5 - - - 12 80 3.5 - - 1908
GN 2422-35-1440-40-UV 35 1440 40 16.5 6.5 - - - 12 80 3.5 - - 2290
GN 2422-43-400-40-UV 43 400 40 21 8.5 - - - 16 80 4.5 - - 1004
GN 2422-43-560-40-UV 43 560 40 21 8.5 - - - 16 80 4.5 - - 1406
GN 2422-43-800-40-UV 43 800 40 21 8.5 - - - 16 80 4.5 - - 2008
GN 2422-43-1040-40-UV 43 1040 40 21 8.5 - - - 16 80 4.5 - - 2610
GN 2422-43-1200-40-UV 43 1200 40 21 8.5 - - - 16 80 4.5 - - 3012
GN 2422-43-1520-40-UV 43 1520 40 21 8.5 - - - 16 80 4.5 - - 4000
GN 2422-43-2000-40-UV 43 2000 40 21 8.5 - - - 16 80 4.5 - - 5020
GN 2422-18-240-40-XT 18 240 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 132
GN 2422-18-400-40-XT 18 400 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 220
GN 2422-18-560-40-XT 18 560 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 308
GN 2422-18-800-40-XT 18 800 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 440
GN 2422-18-1040-40-XT 18 1040 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 572
GN 2422-18-1200-40-XT 18 1200 40 8.3 - 5 M 4 9.5 8 80 2.8 0.8 T20 660
GN 2422-28-400-40-XT 28 400 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 484
GN 2422-28-560-40-XT 28 560 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 678
GN 2422-28-800-40-XT 28 800 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 968
GN 2422-28-1040-40-XT 28 1040 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 1258
GN 2422-28-1200-40-XT 28 1200 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 1452
GN 2422-28-1440-40-XT 28 1440 40 12.3 - 6.4 M 5 11 10 80 4 2 T25 1742
GN 2422-35-400-40-XT 35 400 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 636
GN 2422-35-560-40-XT 35 560 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 890
GN 2422-35-800-40-XT 35 800 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 1272
GN 2422-35-1040-40-XT 35 1040 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 1654
GN 2422-35-1200-40-XT 35 1200 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 1908
GN 2422-35-1440-40-XT 35 1440 40 16.5 - 8 M 6 15 12 80 3.5 0.8 T30 2290
GN 2422-43-400-40-XT 43 400 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 1004
GN 2422-43-560-40-XT 43 560 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 1406
GN 2422-43-800-40-XT 43 800 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 2008
GN 2422-43-1040-40-XT 43 1040 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 2610
GN 2422-43-1200-40-XT 43 1200 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 3012
GN 2422-43-1520-40-XT 43 1520 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 3815
GN 2422-43-2000-40-XT 43 2000 40 21 - 10.5 M 8 18 16 80 4.5 1.5 T40 5020
GN 2422-18-240-40-XV 18 240 40 8.3 4.5 - - - 8 - 2.8 - - 132
GN 2422-18-400-40-XV 18 400 40 8.3 4.5 - - - 8 - 2.8 - - 220
GN 2422-18-560-40-XV 18 560 40 8.3 4.5 - - - 8 - 2.8 - - 308
GN 2422-18-800-40-XV 18 800 40 8.3 4.5 - - - 8 - 2.8 - - 440
GN 2422-18-1040-40-XV 18 1040 40 8.3 4.5 - - - 8 - 2.8 - - 572
GN 2422-18-1200-40-XV 18 1200 40 8.3 4.5 - - - 8 - 2.8 - - 660
GN 2422-28-400-40-XV 28 400 40 12.3 5.5 - - - 10 - 4 - - 484
GN 2422-28-560-40-XV 28 560 40 12.3 5.5 - - - 10 - 4 - - 678
GN 2422-28-800-40-XV 28 800 40 12.3 5.5 - - - 10 - 4 - - 968
GN 2422-28-1040-40-XV 28 1040 40 12.3 5.5 - - - 10 - 4 - - 1258
GN 2422-28-1200-40-XV 28 1200 40 12.3 5.5 - - - 10 - 4 - - 1452
GN 2422-28-1440-40-XV 28 1440 40 12.3 5.5 - - - 10 - 4 - - 1742
GN 2422-35-400-40-XV 35 400 40 16.5 6.5 - - - 12 - 3.5 - - 636
GN 2422-35-560-40-XV 35 560 40 16.5 6.5 - - - 12 - 3.5 - - 890
GN 2422-35-800-40-XV 35 800 40 16.5 6.5 - - - 12 - 3.5 - - 1272
GN 2422-35-1040-40-XV 35 1040 40 16.5 6.5 - - - 12 - 3.5 - - 1654
GN 2422-35-1200-40-XV 35 1200 40 16.5 6.5 - - - 12 - 3.5 - - 1908
GN 2422-35-1440-40-XV 35 1440 40 16.5 6.5 - - - 12 - 3.5 - - 2290
GN 2422-43-400-40-XV 43 400 40 21 8.5 - - - 16 - 4.5 - - 1004
GN 2422-43-560-40-XV 43 560 40 21 8.5 - - - 16 - 4.5 - - 1406
GN 2422-43-800-40-XV 43 800 40 21 8.5 - - - 16 - 4.5 - - 2008
GN 2422-43-1040-40-XV 43 1040 40 21 8.5 - - - 16 - 4.5 - - 2610
GN 2422-43-1200-40-XV 43 1200 40 21 8.5 - - - 16 - 4.5 - - 3012
GN 2422-43-1520-40-XV 43 1520 40 21 8.5 - - - 16 - 4.5 - - 4000
GN 2422-43-2000-40-XV 43 2000 40 21 8.5 - - - 16 - 4.5 - - 5020