LINEAR UNITS - DRIVE COMPONENTS - TIMING BELT FEED AXIS 
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Linear Units - Ball Screw Drives Ø 16 mm with Servo Motors.

   

The linear units series LES are used in many applications and branches and are linear axes with spindle drives that are approved for many years.

   
Example Linear Unit LES 5
Ball recirculation in the patented isel aluminium linear carriage, shown at the linear unit LES 5 enlarge picture
 

The linear units appreciated by technical designers are modules that are ready to be installed, primarily used in factory automation, handling technology and in light mechanical engineering.
Compared to user-specific self-made units, these linear axes almost always offer standard solutions at no extra cost due to their variety of configuration options. In this way they leave enough liberties for machine and system designers for their interpretation of design ideas. The desired linear dimensions can be built according to the customers needs. Even special motor connections according to customer's requierments can be supplied.
Anodized, bending resistance aluminium special profiles with precision steel shafts are the basis of all linear units series LES for required guiding tasks. The feed motion takes place with ball screw feed axes. Servo motors are used as motor drive.
The three overall sizes are:

  • LES 4 = 75 x 75 mm,
  • LES 5 = 225 x 75 mm
  • LES 6 = 150 x 75 mm.
The horizontally and perpendicularly use of the linear units LES is possible.
The patented isel aluminium shaft slide with ball circulation are used as guide carriages, where the primary balls run between two polished steel pins and the guiding shaft.
   



Linear unit LES 4 (LF4) with ball screw drive

Linear Unit LES 4 with Ball Screw Drive

 

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Characteristics


  • aluminium shaft profile W 75 x H 75 mm, anodized
  • clamping surface and profile bottom side plan-milled
  • 2 precision steel shafts Ø 12 h6, material Cf53, hardness 60 ± 2 HRC
  • aluminium slide blocks WS 5/70, 2 x WS 5/70 (70 mm long) or WS   5/200 (200 mm long), adjustable free of clearance, central lubrication
  • ball screw pitch 2.5/4/5/10/20 mm
  • profile sealing by abrasion-resistant sealing lips
  • aluminium die-cast end plates
  • 2 limit and/or reference switches, repeatability ± 0.02 mm
  • driving steel collar with sealed angular contact ball
  • bearings prepared either for flange- mounted direct drive modules or lateral belt drive modules

Options:

  • black aluminium profile, powder-coated
  • electromagnetic brake
  • steel slide block LS2 Item no. 051000 000
  • assembly kit for limit switch 
  • aluminium handwheel or plastic rotary button for manual activity
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Linear unit LES 6 (LF6) with ball screw drive

Linear Unit LES 6 with Ball Screw Drive

 

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Characteristics


  • aluminium shaft profile W 150 x H 75 mm, anodized
  • clamping surface and profile bottom side plan-milled
  • 4 precision steel shafts Ø 12 h6, material Cf53, hardness 60 ± 2 HRC
  • aluminium slide blocks WS 5/70, 2 x WS 5/70 (70 mm long) or WS 5/200 (200 mm long), adjustable
     free of clearance, central lubrication
  • ball screw pitch 2.5/4/5/10/20 mm
  • profile sealing by abrasion-resistant sealing lips
  • aluminium die-cast end plates
  • 2 limit and/or reference switches, repeatability ± 0.02 mm
  • driving steel collar with sealed angular contact ball bearings
  • prepared either for flange-mounted direct drive modules or lateral belt drive module

Options:

  • black aluminium profile, powder-coated
  • electromagnetic brake
  • steel slide block LS2 Item-No.051000 0000
  • assembly kit for limit switch 
  • Aluminium handwheel or plastic rotary button for manuel activity
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Linear unit LES 5 (LF5) with ball screw drive

Linear Unit LES 5 with Ball Screw Drive

 

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Characteristics


  • aluminium shaft profile W 225 x H 75 mm, anodized
  • clamping surface and profile bottom side plan-milled
  • 4 precision steel shafts Ø 12 h6, material Cf53, hardness 60 ± 2 HRC
  • aluminium slide blocks WS 5/70, 2 x WS 5/70 (70 mm long) or WS   5/200 (200 mm long), adjustable
     free of clearance, central lubrication
  • ball screw pitch 2.5/4/5/10/20 mm
  • profile sealing by abrasion-resistant sealing lips
  • aluminium die-cast end plates
  • 2 limit and/or reference switches, repeatability ± 0.02 mm
  • driving steel collar with sealed
  • angular contact ball bearings
  • prepared either for flange-mounted direct drive modules or lateral belt drive modules

 

Options:

  • black aluminium profile, powder-coated
  • electromagnetic brake
  • steel slide block LS2 Item-No.051000 0000
  • assembly kit for limit switch
  • Aluminium handwheel or plastic rotary button for manuel activity
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Linear unit LES 8 (LF8) with ball screw drive

Linear Unit LES 8 with Ball Screw Drive

 

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Characteristics


  • aluminium shaft profile W 118 x H 105 mm, anodized
  • 2 precision steel shafts Ø 12 h6, material Cf53, hardness 60 ± 2 HRC
  • steel slide, free from backlash blocks 
  • ball screw pitch Ø 25 mm with 5 / 10 / 20 mm pitch
  • profile sealing by means abrasion-resistant sealing lips
  • 2 limit and/or reference switches, repeatability ± 0.02 mm
  • driving steel collar with sealed angular contact ball bearings
  • prepared either for flange-mounted direct drive modules or lateral belt drive modules

Options:

  • black aluminium profile, powder-coated
  • electromagnetic brake
  • assembly kit for limit switch 
  • Aluminium handwheel or plastic rotary button for manuel activity
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Drive Components

Ball Screw Spindles

Ball Screw Spindles Ø16


Ø 16 mm

    • Ø 16 mm, rolled, hardened and polished
    • material CF 53, inductively hardened (HRC 60±2);
      (for more detailed information, see DIN 17212)
    • pitches:
      2,5 / 4 / 5 / 10 and 20 mm
    • available in lengths up to 3,052 mm
    • shaft ends treated according to the isel-standards or customer-specifically
    • made according to DIN 69051, part 3, type of tolerance 7

    Options:

    • customer-specific treatment of shaft end
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Ball Screw Spindles

Ball Screw Spindles Ø25


Ø 25 mm

  • Ø 25 mm, rolled, hardened and polished
  • material CF 53, inductively hardened (HRC 60 ± 2);
    (for more detailed information, see DIN 17212)
  • pitches: 5 / 10 and 20 mm
  • available in lengths up to 3,052 mm
  • shaft ends treated according to the isel-standards or customer-specifically
  • made according to DIN 69051, part 3, type of tolerance 7

Options:

  • customer-specific treatment of shaft ends
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Timing Belt Drives with Servo Motors

Isel linear units LEZ 6, LEZ 7, LEZ 8 and LEZ 9 with belt drive are designed for quick and dead-on positioning and therefore are qualified for the application in handling, assembly automation and machine handling. Due to the solid and bed-proof aluminium construction, they are preferably used for processing, positioning and transporting parts and work pieces. Even an application which is cantilever and not mounted to a substructure is possible within certain limits due to the warp
resistant design.

Guide carriage with ball recirculation carriage
Guide carriage with ball recirculation carriage enlarge picture
 


Basic distinctive features of the new isel timing belt feed axis are the stationary belt of the LEZ 7 and 8 types and the circulating belt of the LEZ 6 and 9 types. For especially long traverse paths the drive unit with the bilaterally flange mountable drive motor of the LEZ 7 and 8 types is moved over the entire traverse path. When used as Z-axis, the drive units are stationary and the linear guide profiles are moved.

The linear units are designed modularly. Base of the timing belt feed axes are anodized aluminium extrusion-pressed-profiles, which are available in length of up to 6000 mm. To fasten the feeds, the LEZ 7 and 8 profiles are equipped with T-grooves on the bottom side and the LEZ 6 and 9 profiles provide fixing holes. The profiles take on the precision steel shafts to guide the carriages.

The patented isel carriages with ball recirculation are used as guide carriages.

The open version of the feed axes are equipped with HDT belts. Depending on the type of feed axis the spacing and width of the belts are different: LEZ 8/9: 3mm spacing/ 15 mm width LEZ 6/7: 5 mm spacing/ 25 mm width. The drive belts run over bilaterally supported steel pinions.

The possible maximum speed also depends on the type of feed axis: LEZ 6: max. 5 m/s, LEZ 7/8 : 2 m/s, LEZ 9 : 3 m/s.
The repeat accuracy for all axes is lower or equal ± 0,2 mm. The limit / reference switch accuracy is < 0,1 mm.
All types of the new timing belt feed axis are equipped with contact-free limit switches.

The timing belt feed axes are also available without drive module with protruding shaft ends for the mounting of drive modules supplied by the customer. It is preferred to apply isel servo motors which represent highest possible dynamics and positioning accuracy.

It is possible to assemble combinations in compound-, H- and multiple axes arrangements with special connection angles, which are adjusted to the individual timing belt feed axes.



Linear Unit LEZ 6 with Timing Belt Drive

Linear Unit LEZ 6 with Timing Belt Drive

 

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Characteristics
  • Aluminium profile with midget linear guide LFS-8-5
  • Timing belt with 5 mm toothing, width 25 mm
  • Feed: max. 2 m/s
  • Bearing carriage WS 3, L 96 x W 130 mm
  • Feed per revolution: 70 mm

Options:
  • Max. length = 6,000 mm
  • Drive modules attachable on both sides
  • Overtravel limit switch with connection cable (only in combination with drive module)
 
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Linear Unit LEZ 7 with Timing Belt Drive

Linear Unit LEZ 7 with Timing Belt Drive

 

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Characteristics
  • Fixed timing belt
  • Aluminium profile with midget linear guide LFS-8-8
  • Timing belt with 5 mm toothing, width 25 mm
  • Feed: max. 1.5 m/s
  • 2 x Bearing carriage WS 3, L 9
Options:
  • Overtravel limit switch with connection cable
 
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Linear Unit LEZ 8 with Timing Belt Drive

Linear Unit LEZ 8 with Timing Belt Drive

 

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Characteristics
  • Fixed timing belt
  • Aluminium profile with midget linear guide LFS-8-9
  • Timing belt with 3 mm toothing, width 15 mm
  • Feed: max.: 1.5 m/s
  • 2 x Bearing carriage WS 11, L
Options:
  • Overtravel limit switch with connection cable
 
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Linear Unit LEZ 9 with Timing Belt Drive

Linear Unit LEZ 9 with Timing Belt Drive

 

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Characteristics
  • Aluminium profile with midget linear guide LFS-8-7
  • Timing belt with 3 mm toothing, width 15 mm
  • Feed: max.: 2 m/s
  • Bearing carriage WS 11, L 96 x W 95 mm
  • Feed per revolution: 60 mm
 
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Common Characteristics
  • Clearance-free feed unit with timing belt drive
  • Repitition accuracy ± 0.2 mm
  • Limit and/or reference switch accuracy < 0.1 mm
Common Options:

  • Stepper motor drive
  • Special lengths in steps of 100 mm on request
   
     
Characteristics, Combination Examples, Scale Drawings LEZ 6/7/8/9 (PDF approx. 2,6 MB)    
     
Subject to change without prior notice    
     

Overview

Linear Unit LES Ø 16
Ball Screw Drive with Servo Motors
LES 4
LES 6
LES 5
LES 8

Drive Components
Ball Screw Spindles
Ø 16
Ø 25


Linear Unit LEZ
Timing Belt Drives with Servo Motors
LEZ 6
LEZ 7
LEZ 8
LEZ 9

Technical Advice and Sales

Jürgen Balzer
+49 (0) 6659 / 981-774
juergen.balzer@isel.com

Steffan Gärth
+49 (0) 6659 / 981-773
steffan.gaerth@isel.com

Markus Mötzung
+49 (0) 6659 / 981-767
markus.moetzung@isel.com

Armin Quanz
+49 (0) 6659 / 981-772
armin.quanz@isel.com

Fred Reinhard
+49 (0) 6659 / 981-771
fred.reinhard@isel.com

Fax.: +49 (0) 6659 / 981-777

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