Synchronised Reinforced Steel Telescopic Slide

3 beams total extension


This Reinforced 3 beam zinc plated steel telescopic slide, offers a full extension.

It includes a synchronisation device to allow a sequential opening of the beams, which reduces the moving forces.
It is imperative to observe the direction of assembly between the fixed and movable sliders.

Strong, it encloses reinforced ball bearings that restricts twisting of the beams.

It is intended for heavy loads in applications requiring high strength slides.

Drilling scheme

Chambrelan  - Synchronised Reinforced Steel Telescopic Slide - 3 beams total extension - RA7S

Standard closed lengths

Closed length
Load per pair
on major axis
Load per pair
on minor axis

CAD Files

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300 mm 315 mm 180 kg 197 kg
350 mm 375 mm 228 kg 182 kg
400 mm 415 mm 276 kg 168 kg
450 mm 475 mm 320 kg 156 kg
500 mm 515 mm 350 kg 144 kg
550 mm 575 mm 355 kg 132 kg
600 mm 615 mm 350 kg 124 kg
650 mm 675 mm 340 kg 115 kg
700 mm 715 mm 330 kg 106 kg
750 mm 775 mm 319 kg 98 kg
800 mm 815 mm 305 kg 91 kg
850 mm 875 mm 292 kg 85 kg
900 mm 915 mm 277 kg 79 kg
1 000 mm 1 015 mm 250 kg 68 kg
1 100 mm 1 115 mm 225 kg 60 kg
1 200 mm 1 215 mm 202 kg 53 kg
1 300 mm 1 315 mm 177 kg 47 kg
1 400 mm 1 415 mm 152 kg 42 kg
1 500 mm 1 515 mm 130 kg 38 kg
1 600 mm 1 615 mm 110 kg 33 kg
1 700 mm 1 715 mm 90 kg 28 kg
1 800 mm 1 815 mm 70 kg 23 kg
1 900 mm 1 915 mm 50 kg 17 kg
2 000 mm 2 015 mm 30 kg 10 kg

Technical informations


The guide rail is very strong, both in terms of its cold drawn hardened profiles and its end stops. It is intended for applications of heavy loads drawers or to withstand hard use. Being equipped with reinforcing ball bearings, it may also be flat mounted. Remember that a flat mounting induce significant deflection.

Recommended operating temperatures from -20 to 80°C. After modifications during manufacturing, we can go from -50 to 250°C.

This product can be used as average load drawer slides, machine guard guides, telescopic rod, bar or arm, generator slide, furniture slide, extendable table slide rail, horizontal suspended guidance or in some cases as in vertical guides.


Chambrelan produces this telescopic slide using cold drawn profiles.

Anti-corrosion standard coating is a silver zinc, of a 12 microns average thickness, which offers excellent resistance to the salt spray test.

It has straight stops when opening and closing.

It has ball cages made of galvanized steel.

Its ball bearings are made of 100C6 chrome steel. It is greased with a high pressure grease.

Chambrelan is specialized in the design and manufacturing of telescopic slides and rails for industrial applications: reinforced slides, linear slide bearings rail, bearings guide, steel, aluminum or stainless steel sliders, partial, full or over extension, heavy duty industrial drawers...


Standard slides are delivered slightly greased. We use a high pressure bearing grease for steel slides and a white grease for aluminum and stainless slides. Upon request, we can use food grease (compatible clean room) a high temperature grease a teflon free grease (for spray booths...) grease free mounting (although we do not advise this option)

    A food safe grease, combined with stainless steel ball bearings, offers a cheap alternative to stainless steel slides.


    Manual lock

    • RA7V : lock opened: when extended, push the lock to close the slider.
    • RA7F : lock closed: when closed, push the lock to open the slider.
    • RA7VF : lock opened and closed: when extended, push the lock to close the slider, when closed, push the lock to open the slider.

    When mounting in vehicles, we invite you to contact us if you plan to use locking slides.

    the presence of lock and latches makes some shorter lengths impossible to manufacture. Moreover some standard holes may not be present.

    we do not recommend locking options for use in vertically mounted (guillotine) applications.

    Surface treatment

    Other treatments ensuring better corrosion resistance are also available. Do not hesitate to contact us.

    A nitruration coating can be supplied, which offers, in addition to corrosion resistance, an increased resistance to hammering of ball bearings and a longer lifespan. This option can be usefull in the case of intensive use or applications subject to vibrations.

    Stainless stell ball bearings mounting

    It can be mounted with stainless steel balls to get a very good corrosion resistance, which in some cases can provide an economical alternative to stainless steel slides.

    high temp use

    Use in high temperature (furnace): This model can be used in high temperatures environments: up to 250°C. However, adjustments are necessary: Additionnal play in the assembly to allow the expansion elements without blocking the slide Use of high temperature grease Removing of all plastic parts. These adjustments on the slides should be performed in the factory, it is important to warn us with price request or order and to allow a delay for manufacturig.

      the zinc coating deteriorates above 120°C, we can offer other solutions.

      Development changes

      the extension of this model can be decreased or increased up to 10%.

      increased development reduces the maximum permissible load.

      Vertical mounting

      This slide can be mounted vertically. However, to avoid jamming, it is necessary to install, during production, additional stoppers to relocate the ball cages. It is therefore necessary to specify the type of installation requirements: downward or upward movement.


      Same models

      This model has equivalent models, whose overall dimensions and the diagrams of drillings are close or identical:

      Partial extension
      Total extension
      Over extension
      Linear Rails


      - - - -


      - RA774


      - -

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      Data not contractual and subject to change without notice.