RA7R

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

  • Extension : 275 mm
  • Load on minor axis : 140 kg
  • Load on major axis : 212 kg

Option

Pictures


3D


Option :

Description

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

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

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

Applications

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.

Manufacture

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...

Greasings

  • 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.

Options

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.

In most cases, only one locking slide is required for the locking of the drawer to be achieved.

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.

Double extension

RA7DD - the slide opens from both sides. This can be used for transfer hatches.

The double extension option is incompatible with any locking system.

RA7S - The synchronization option allows sequential opening of the beams, thus reducing the opening force of the slide under load.

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.

Drilling scheme

Download

Standard closed lengths

The characteristics given on this website correspond to standard manufacture or usual requirements. Our position as a manufacturer enables us to offer great flexibility in order to meet the most specific requirements.

MeasuresLoadsClosed lengthExtensionLoad per pair
on major axis
Load on minor axisStockPlease select
Longueur replié
250
Extension
275
Load on minor axis
212
Load per pair on major axis
140
2502751402122
Longueur replié
300
Extension
315
Load on minor axis
197
Load per pair on major axis
180
300315180197100
Longueur replié
350
Extension
375
Load on minor axis
182
Load per pair on major axis
228
3503752281820
Longueur replié
400
Extension
415
Load on minor axis
168
Load per pair on major axis
276
40041527616829
Longueur replié
450
Extension
475
Load on minor axis
156
Load per pair on major axis
320
45047532015642
Longueur replié
500
Extension
515
Load on minor axis
144
Load per pair on major axis
350
50051535014451
Longueur replié
550
Extension
575
Load on minor axis
132
Load per pair on major axis
355
550575355132132
Longueur replié
600
Extension
615
Load on minor axis
124
Load per pair on major axis
350
600615350124981
Longueur replié
650
Extension
675
Load on minor axis
115
Load per pair on major axis
340
6506753401150
Longueur replié
700
Extension
715
Load on minor axis
106
Load per pair on major axis
330
700715330106109
Longueur replié
750
Extension
775
Load on minor axis
98
Load per pair on major axis
319
7507753199826
Longueur replié
800
Extension
815
Load on minor axis
91
Load per pair on major axis
305
8008153059132
Longueur replié
850
Extension
875
Load on minor axis
85
Load per pair on major axis
292
8508752928536
Longueur replié
900
Extension
915
Load on minor axis
79
Load per pair on major axis
277
90091527779142
Longueur replié
1000
Extension
1015
Load on minor axis
68
Load per pair on major axis
250
100010152506890
Longueur replié
1100
Extension
1115
Load on minor axis
60
Load per pair on major axis
225
110011152256066
Longueur replié
1200
Extension
1215
Load on minor axis
53
Load per pair on major axis
202
120012152025396
Longueur replié
1300
Extension
1315
Load on minor axis
47
Load per pair on major axis
177
13001315177473
Longueur replié
1400
Extension
1415
Load on minor axis
42
Load per pair on major axis
152
140014151524260
Longueur replié
1500
Extension
1515
Load on minor axis
38
Load per pair on major axis
130
150015151303862
Longueur replié
1600
Extension
1615
Load on minor axis
33
Load per pair on major axis
110
16001615110330
Longueur replié
1700
Extension
1715
Load on minor axis
28
Load per pair on major axis
90
1700171590283
Longueur replié
1800
Extension
1815
Load on minor axis
23
Load per pair on major axis
70
1800181570236
Longueur replié
1900
Extension
1915
Load on minor axis
17
Load per pair on major axis
50
1900191550170
Longueur replié
2000
Extension
2015
Load on minor axis
10
Load per pair on major axis
30
2000201530100

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