Coated bearings withstand aggressive media

A new high-grade martensitic hardening steel has been developed for rolling bearings, offering maximum corrosion resistance under extreme conditions; for example, in dry-running applications or when the bearings are in contact with aggressive media such as water, acids and cleaning agents.

Based on the consistent refinement of high-grade Nitrosteels, Schaeffler's new Cronitect martensitic hardening steel achieves a very high hardness through its chemical composition, in combination with a new thermo-chemical surface layer treatment process. Cronitect is therefore able to withstand extreme conditions - including salt spray testing in accordance with DIN 50021 SS - without any problems, even after 600 hours.

Cronitect's resistance to corrosion is many times better than that of conventional Nitrosteels. Rolling bearings that use Cronitect come in either sealed or non-sealed version.

The name Cronitect is derived from the chemical composition of the material and from its special heat treatment process. The 'tect' suffix is found in other Schaeffler coating products and refers to the material's excellent corrosion protection.

New facilities

Schaeffler recently opened a new development centre for the surface coating of components at its headquarters in Herzogenaurach, Germany. The new centre offers opportunities to develop new processes and combinations of materials and coatings technologies. The opening of the new centre represents a further expansion of the company's R&D activities.

Mrs Maria-Elisabeth Schaeffler, Partner of INA-Holding Schaeffler KG, emphasised the outstanding importance of R&D for Schaeffler, particularly with regard to innovation: "By opening the new Surface Technology Centre, our group of companies is intensifying its commitment to the future, particularly in nanotechnology, and is expanding its expertise in rapidly converting research results into innovative and efficient products."

Schaeffler is a leader in the area of innovative surface and coating technologies. The functionality of surfaces for a range of applications is optimised using special manufacturing and treatment processes. Examples are wear resistance, sliding characteristics, shine or appearance, electrical and thermal conductivity, as well as corrosion protection. Under its established brands Corrotect and Triondur, Schaeffler offers a successful range of coated components.

Opportunities for innovation

The importance of coating technology will continue to increase due to growing product requirements in industry and vehicle manufacturing. The Surface Technology Centre now provides development engineers at Schaeffler with facilities and extra capacity, which open up new possibilities, particularly for combining different processes and materials.

Tribological coating systems (coating systems that are optimised for friction and are wear-resistant) can be developed and implemented using the PVD/PACVD development facility. The coating material is either in the form of a solid (physical vapour deposition) or in the form of a gas (plasma assisted chemical vapour deposition) and is vaporised in a vacuum. In contrast to conventional coating methods, it is possible to produce innovative compositions of different materials and coatings with this environmentally-friendly vacuum process.

There is also an electroplating development facility that is used for developing corrosion protection coatings that are environmentally friendly. For example, part of the focus is now on developing new coatings that are hexavalent chromium-free (Cr-VI) and that comply with the stringent requirements of the new EU directive on end-of-life vehicles (ELV).

Both development facilities also enable cost-oriented, function-oriented combinations of different vapour deposition processes and coating systems. The Surface Technology Centre, in combination with Schaeffler's R&D facilities, will enable the Group to rapidly implement customised, nanotechnology-based finishes for its customers' products.

Schaeffler (UK) Ltd

Unit 308, Fort Dunlop
Fort Parkway
BIRMINGHAM
B24 9FD
UNITED KINGDOM

+44 (0)121 313 5830

info.uk@schaeffler.com

www.schaeffler.co.uk

More products
7 hours ago
TMI Group turns to Kawasaki for milling machine automation
Dutch integrator RFA Rijlaarsdam Factory Automation has installed a Kawasaki Robotics EMEA RS020N robot with an Okuma Benelux Genos M460V-5AX milling machine at TMI Group Nederland in Hengelo.
10 hours ago
100 million seals made from 45% recycled plastics
Essentra Components is expanding the ranges of security seals that it will manufacture using a minimum of 45% recycled material, after a successful 100 million piece initial phase.
3 days ago
Vision systems help IMA Group raise industry standards
IMA Active, a division of IMA Group dedicated to the production of automated systems and machinery for the pharmaceutical industry, has upgraded its continuous tablet-coating solution with the installation of Omron’s vision system equipped with a high-speed colour camera and dome light.
3 days ago
New robotics sales engineer for the North East
With demand for RARUK Automation’s automation solutions continuing to grow, the company has expanded its team of robotics and systems sales engineers. The most recent appointment is Tony Bailes, the new robotics sales engineer for the North East of England.
5 days ago
Kistler Group presents global climate strategy
The Kistler Group has presented its global climate strategy with facts and figures on its commitment to greater sustainability in its first sustainability report.
5 days ago
Euchner looks to drive growth strategy with new appointment
Euchner has further demonstrated its commitment to its growth strategy with the appointment of Hollie Dixon in a new business development role.
6 days ago
Energy efficiency is the best way for industry to cut costs
In a new report, ABB is quoted on recommendations for improving industrial energy efficiency, which is seen as being the best way for businesses to cut costs and reduce emissions right now.
1 week ago
Schneider Electric unveils next-generation industrial technology
Schneider Electric has called for industry to move beyond focusing solely on output, and to embrace a model that helps combat both the climate and energy crises.
1 week ago
Delta selected among the Taiwan Best Global Brands
Delta has been selected among the Best Taiwan Global Brands for the 12th consecutive year. Ms Shan Shan Guo, Delta’s chief brand officer, stated: “We have successfully transformed ourselves from a component supplier to a system integration solution provider, and we continue to innovate our products and services and seize opportunities in the market.
1 week ago
Drives and servos now certified to communicate via Profisafe
The COMBIVERT F6 range of drive controllers and the COMBIVERT S6 range of servo drives from KEB Automation, which offer integrated safety functions directly in the drive, are now certified to communicate via the safe fieldbus protocol Profisafe.

Login / Sign up