Drawer runner

1. What do you do if the lock doesn’t engage ?

  • Check : The slides one by one : by manual opening and by engaging the lock
  • Check : That the furthermost point of extension for both slides is equal: the extension of a slide can hamper the locking of another one

2. What do you do if you have to mount a drawer in an oven ?

  • Our standard stock slides can withstand temperatures up to 80°C
  • When mounting in hot enclosed spaces or furnaces, the maximum temperature we recommend is 250°C. For these applications we have to adapt the slides , by removing the non-metalalic components and by building the slide with a very free fit. This will allow the expansion of the various parts without seizing up the slides. Please specify this detail when placing your order.
NB : over 150°C, zinc starts blistering and coming off. Other solutions must be considered. Please ask for advice.

3. What are the rules for a good mounting ?

Rules for a good mounting are simple :
  • Use all the fixing holes provide.
  • Make sure that the slides are are mounted parallel and level to each other.
  • Make sure that the interfacing mounting areas are flat.
By following these mounting rules, you will get a smooth and even movement of the slides. A resistance to opening or closing indicates an incorrect mounting . If the slides are incorrectly mounted the life span of the slides will be reduced.

4. Can the standard extension be modified ?

The Chambrelan range is composed of 2, 3 and 4 beam slides with any extension up to 150% of the closed length. The extension can be increased or decreased by adapting the length of the ball Cages.

5. Which kind of surface treatments are used on Chambrelan slides ?

Anti-corrosion Surface treatments

  1. General presentation of surface treatments on ball slides
  2. Standard treatments on CHAMBRELAN guideways
  3. Processing options according to materials or use
  4. Summary synoptic table

1 - General presentation of surface treatments on linear ball slides:

Anti-corrosion treatment highly contributes to the quality and service life of linear guides. Industrial applications where humidity, dust and corrosive agents may be present, create difficult conditions for the telescopic slides. It is therefore important to choose the right surface treatment according to the end application in order to guarantee the reliability of the linear guidance systems. All our surface treatments are selected to comply with environmental regulations: for example, the zinc plating used is in compliance with RoHS and REACH directives. To guarantee the reliability and functionality of the steel telescopic slides, the elements are tested with "Salt Spray" (S.S.). Their resistance is expressed in hours before red rust on less than 5% of the surface. A standard defines the resistance and serves as a reference for comparative evaluation between different types of anti-corrosion treatments. Samples of slides are therefore placed in a test chamber and sprayed throughout the test with a sodium chloride solution (5%) at PH 6.5 and a temperature of 35°C. An evaluation of the surface condition is carried out at regular intervals to measure the quality of the protection.

2 - Standard surface treatments on CHAMBRELAN guides

CHAMBRELAN telescopic slides, whether partial extension, full extension or super-extension, are used in a wide range of applications, such as access doors, pull-out drawers, gap fillers, etc. All standard CHAMBRELAN slides are supplied with an anti-corrosion treatment suitable for the majority of applications:
  • The steel slides are protected by a white zinc coating. The process consists of an electrolytic treatment with passivation. It forms a protective layer on the entire surface of the part. With an average thickness of 10 microns, it resists salt spray for 400 hours.
  • The aluminium slides are in colourless anodisation, which is given to resist to 250 hours before white rust.
  • Stainless steel slides are pickled and passivated.
In some applications, the corrosion protection treatment requires special attention as the telescopic slides remain closed most of the time. Dirt and moisture are therefore trapped inside, making it difficult to evacuate them. Maintenance intervals, which can be long or even irregular, must also be taken into account. For this reason, we offer suitable surface treatments as an option:
  • to increase corrosion resistance,
  • for aesthetic reasons (black colour treatments),
  • to increase the hardness of the profiles and thus resist vibrations or intense duty cycles by carbonitriding (addition of carbon on the surface) .
These different options can be combined with each other...

3 - Surface treatment options depending on the material used:

For steel guides we can offer:

  • a black zinc plating with a S.S. resitance of 200 hours;
  • a high corrosion resistance zinc plating with a finish that offers a 600-hour resistance to S.S.
  • a nickel zinc plating with a resistance of 1000 hours S.S.
  • In the particular case of vibrations or a high number of cycles, we can also treat our profiles with a carbo-nitriding process which increases the surface hardness up to 35 HRC, the standard steel profiles having a hardness of about 20 HRC. With its oiled impregnation, it will resist between 150 and 250 h S.S. Note : This hardness treatment can be combined with an anti-corrosion treatment, such as zinc nickel to optimize its resistance.

For aluminium slides, the possible options are :

  • A black anodic oxidation
  • A hard anodic oxidation with a hardness of about 48 HRC

For stainless steel slides :

  • For stainless steel, we can carry out an electrolytic polishing which improves the surface state and the aspect of the profiles.
The pro's advice: Combining an improved surface treatment with stainless steel ball bearings mounting offers an economical alternative to all-stainless steel slides with optimised corrosion resistance at a fraction of the price of an all-stainless steel slide. Note: Lubrication is also a key element for the life of the slides.

4 - To remember:

Simplified synoptic table of surface treatments according to the materials or use:

Treatment Material

Steel

Aluminium

Stainless steel (304L or 316L)

Standard

ZNJ : White Zinc 450 h S.S. OAI : Colourless Anodic Oxidation 250 h S.S. Scouring & passivation

Options

Aspect

ZNN : Black Zinc 250 h S.S. OAN : Black Anodic Oxidation Electrolytic Polishing

S.S. resistance

ZNA : High strength zinc 600 h S.S.
ZNK : Nickel Zinc 1000 h S.S.

Hardness

NIT : Carbo-Nitriding hardness of 35 HRC OAD : Hard anodic oxidation hardness of 48 HRC
  For more information or technical advice, please contact us.

6. What temperature can a standard slide withstand ?

Our standard stock slides can withstand temperatures up to 80°C. Beyond these temperatures, adaptations can be made. Contact us.

7. Why does Chambrelan produce a reinforced range ?

For extreme conditions of use, or heavy loads, we offer you a range of reinforced slides. They can absorb twisting effects. Reinforced slides are specially recommended when there is a torque load or when there is a need for mounting on a minor axis.

8. What does the load capacity indicated on technical tables mean ?

Standard load capacities are given for a pair of slides, in the opened position, mounted on the major axis, with a uniformly distributed load. Be careful: with a mounting on the minor axis, load capacity is reduced by 40%.

9. What is the maximum speed of use for Chambrelan slides ?

The maximum speed is 0.25m per second.

10. What do you do if the environment is dirty ?

  • Chambrelan slides come without a protection device or system to gaurd against dust, particles…
  • There is a risk that the presence of impurities in the tracks may rapidly cause jamming or seizing and premature wear of slides.
  • Consequently, it is important that the slides are installed in a protected area or to find the necessary protection solutions at the time of the system design.

11. Do Chambrelan slides need specific maintenance ?

Bearing slides maintenance:

CHAMBRELAN bearing slides have been designed to operate with minimum maintenance. They are lubricated in house with a high pressure bearing grease, which guarantees them an optimum life span. However, in the event of severe operating conditions (environment, high operating rates, etc.), the slides should be regularly and systematically maintained. They are delivered pre-greased from the factory:
  • for steel slides, with a lithium high pressure grease,
  • for aluminium or stainless steel slides with a food grade white grease, clean room compatible.
When in use, the important thing is to have clean and greased ball bearings and ball tracks. As far as possible, they must be free of impurities that could damage the raceways or block the movement.

Recommendation:

The maintenance intervals depend on the use and the environment; During our qualification tests at 15000 cycles, we lubricate the slides every 5000 cycles. However, an abrasive environment or high rates will require more regular maintenance. In the case of particular use at temperatures below -20°C or above 140°C, we can adapt the choice of grease to suit these conditions. The same applies to food environments or clean rooms.

Operating mode:

Without disassembling the slide, clean the raceways with a cloth; it is possible to use a degreasing solvent. Then abundantly regrease the raceways with a brush or grease spray. Finally, carry out a few opening and closing cycles so that the ball bearings are greased. We can eventually supply the grease we use.

Overview table of greases used:

Low temperature Standard High temperature
Steel slides MALUB GV2 (-50°C à +130°C) MALUB (-20°C à +140°C) JELT high temp (-20°C à +1200°C)
Aluminium slides JELT food & clean room compatible (-20°C à +140°C) N/A
Stainless steel slides JELT high temp (-20°C à +1200°C)
For any further information, please do not hesitate to contact us.

12. What do you do if the drawer is difficult to move ?

  • Check : The slides individually by manually opening and closing
  • Check : The eveness of the interfacing mounting faces for the fixed and mobile beams.
  • Check : The parallelism of the slides on fixed and mobile beams
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