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28 feb 2024

ADR at Global Industrie 2024

3D model of ADR's stand

ADR will be present at Global Industrie from Monday 25th to Thursday 28th of March, Parc des Expositions Paris Nord Villepinte.

Visit us in the heart of the mechatronics village alongside ARTEMA, stand number 5W139.

01 feb 2024

The different types of metal used at ADR

Range of ADR Ball Bearings

At ADR, we use different types of metal to manufacture our ball bearings depending on the project and application.

  • Stainless steel

Stainless steel is commonly used for the bearings at ADR. The martensitic stainless steel presents strong hardness and excellent abrasion resistance. Moreover, its chromium content makes it highly resistant to corrosion.

  • Chromium steel

Chromium steel presents a high hardness and high dimensional stability allowing it to resist heavy loads and to be usable at up to +150°C. Thanks to its homogeneous structure at both macroscopic and microscopic levels, it is able to respond to requirements of small torques and high rotating velocities. However, it is not recommended for corrosive environments.

  • High-speed steel

High-speed tungsten steel is used for very high temperature applications of up to +550°C. Its fine structure makes it particularly ideal for applications with a very low noise level.

  • Superalloy

At ADR we mainly use ALACRITE or STELLITE alloys which are cobalt based alloys with a high chromium and tungsten content. They can be used in the following environments:

  • Wide temperature ranges from -180 °C to +800 °C
  • Highly corrosive environments (thanks to an exceptional resistance to oxidation)
  • Applications requiring non-magnetic materials (due to their very low steel content)

Cobalt confers good rubbing characteristics and excellent resistance to abrasion and decreases the risk of seizure. The additions of chromium and tungsten form very hard and stable carbides which obtain strong hot and cold hardness for this type of alloy.

  • Light alloy

Light alloys are usually used for structural parts in the design of specific ball bearings due to their density or non-magnetism. Ti6AI-4V offers an excellent combination of mechanical properties, with low density, good corrosion resistance and high temperatures (of up to +400 °C), in addition to being non-magnetic.

  • Ceramic

ADR can propose hybrid ball bearings with steel rings and ceramic balls for use:

  • At high speed
  • In a corrosive environment
  • With limited lubrication
  • In a magnetic environment
15 jan 2024

Happy New Year 2024

Happy New Year 2024

Everyone at ADR wishes you a wonderful new year 2024.

06 dec 2023

ADR contributes to the rebirth of the Rosa Bonheur "Taureau Marchant"

The Rosa Bonheur "Taureau Marchant"

As this year marks the bi-century of artist Rosa Bonheur’s birth, the municipality of Thomery has decided to recreate one of her works of art. A part of the statue’s financing was gathered thanks to crowdfunding, especially from companies based in Thomery and surroundings, such as ADR.

Donations represent 50% of the total amount, or €48980 from 181 donators. The inauguration will take place at the “Combattants d’Hier et d’Aujourd’hui” roundabout (road of Champagne), on the 9th of December. Everybody is welcome to attend. The inauguration will be followed by a friendship glass.

02 nov 2023

ADR at the French Space Days in India

ADR and our agent Mac Marketing at French Space Days in India

Monday 9 October marked the start of the French Space Days with the arrival of French astronaut Thomas Pesquet and the French delegation composed of 26 SMEs including ADR. The aim of this conclave was to boost the business and reinforce the collaboration between France and India. This event was the perfect opportunity to discuss new strategies and also network with the different actors from the Indian space industry.

India asserts more and more its space nation’s position, especially with the landing of the Chandrayaan-3 mission on the Moon then with the launch of the new mission Aditya L-1, currently en route to the Sun.

Nowadays, the Indian space market represents 2% of the market in the world, or 7 billion dollars.

With many projects such as Gaganyaan or NISAR, India is increasingly developing its interest for space research. Indeed, the Indian Space Research Organisation (ISRO) owns one of the largest fleets of communication (INSAT), remote sensing (IRS), navigation and scientific satellites. Since its founding, the ISRO has launched 432 satellites on behalf of 34 countries.

The French Space Agency CNES and ISRO have been partners for over 50 years. Currently there are over 500 companies involved in activities such as components’ production, including ADR.

20 oct 2023

ADR : Technology in Motion

Our CEO on the set of video show #Décryptage

Our CEO Thomas DUCCESCHI was interviewed on set of the BFM Business’s partner Scribeo.

At the heart of this exchange between Mr. DUCCESCHI and Stéphane PEDRAZZI, the video presenter: the innovation in the sector of ball bearings.

Click on the link on the right below to watch the interview.

05 oct 2023

ADR, from Miniature to Integrated Ball Bearings

ADR Ball Bearing ranges

ADR’s history began in 1925. Mister Beduneau, engineer and inventor, manufactured alone in his workshop miniature ball bearings mostly used in gyroscopes.

In 1964, the company ADR became a division of the giant SKF and dedicated one of its two factories to the manufacturing of instruments ball bearings. Here are some machine examples where ADR ball bearings could be found in the seventies: calculating machines, machines, fans, household appliances, potentiometers, oscillographs, etc.

At the end of the 1970s, ADR specialized in high precision ball bearings and developed new series with stainless steel and small sections. The company began to work for major clients and extended its ranges of annular ball bearings.

In 2004, ADR joined the ALCEN group and started to develop technological synergies for high-tech markets. After a vast workshop expansion, including the opening of a grinding workshop and the installation of two new cleanrooms in 2010, ADR started manufacturing new products.

Thanks to ADR/Customer collaborations, the company designs new subsystems such as electromechanical actuators, the 3-axis positioners and servomotors which meets new technological requirements. The X-SPACE range, intended for space projects launched in 2021. This new range of integrated ball bearings was conceived to provide reliability, accuracy and performance in difficult environments with extreme temperature, void, etc. in which the bearings operate. Indeed, once a spacecraft is launched into space, it is technically impossible to carry out maintenance or repair on potentially defective parts.

Nowadays, ADR is expanding further its range of thin-section ball bearings with new diameters available, for example the 420 mm. The goal being to develop new diameters up to 450 mm. These ball bearings have been developed primarily for new projects related to the defense and security markets.

11 sep 2023

ADR Ball Bearings aboard the Chandrayaan-3 mission

Pragyan Rover photo ISRO

A couple of weeks ago, India became the first country to land a space probe near the lunar south pole.

Chandrayaan-3, India’s third lunar exploration mission successfully landed on the 23rd of August. Launched on the 14th of July, from the Satish Dhawan Space Centre, this mission’s goals are to demonstrate safe and soft landing on lunar terrain, explore the moon’s surface thanks to a rover and to conduct scientific experiments.

Prior to the landing, the mission sequence was divided in three phases:

  • Earth centric phase
  • Lunar transfer phase
  • Moon centric phase

ADR and our agent Mac Marketing were proud to take part in this mission. Indeed, ball bearings manufactured in our workshop were aboard the launcher, satellite and rover.

This achievement shows that with determination and dedicated teams, we can accomplish anything.

22 aug 2023

New Tool Available: The Bearing Generator

New Tool Available Picture Ball Bearing 3D

A new tool is available on our website, the Bearing Generator. Allowing you to generate a combination of ball bearings which could potentially suit your needs. By entering your specifications (dimensions), the system will generate a list of ball bearings.

The tool adapts the list according to two parameters: dimensions (mm) and static capacities (N). Once the list is generated, it can be printed. Moreover, you can contact our team of sales engineers by submitting a request, or download our leaflets. The Bearing Generator allows you to view a selection of ball bearings which could correspond to your needs in a few clicks.

11 jul 2023

ADR Summer Closure 2023

ADR Summer Closure 2023 photo

Please note that ADR will be closed from Monday 31 July to Sunday 20 August 2023.