By Jenni Wirtz | 22 November, 2018
Borg & Beck Bi-Metal Brake Discs
The term ‘lightweighting’ has been adopted by the automotive industry and vehicle manufacturers (VMs) in particular, to describe weight reduction measures, which have now become a whole-vehicle concept that not only increase fuel economy and reduce emissions, but also enhance vehicle performance and improve handling.
A recent example of the extreme lengths VMs will go to in pursuit of lightweighting is demonstrated by the Bi-Metal brake discs fitted to several models in the BMW range.
With original equipment manufacturers (OEMs) focusing in on product consolidation and material evolution, the challenge to take weight out of such a safety critical and performance related component, without altering its face materials – as these are essential for working in harmony with the brake pads – was considerable.
The solution that BMW has come up with, contributes to its overall weight-saving objectives by removing up to 20% of the weight of the previous disc. This has been achieved by changing the material specification of the disc’s ‘top hat’ from cast-iron to aluminium, which is now riveted onto a cast iron friction face, creating a completely new concept for everyday automotive applications, in the form of a two-piece composite design.
Distributors will be pleased to know therefore, that this new composite brake disc design is now available to the aftermarket from Borg & Beck. Each Bi-Metal disc in the comprehensive 16 part number range, is finished in a water-based, zinc and aluminium flake BECKTEC coating that not only provides thermal efficiencies, but protects it from rust and corrosion inside and out, so it always looks the part. An additional benefit for the fitting technician is the fact that there is no need for friction surface degreasing, so installation can be made straight out of the box.
With this exciting addition, distributors have access to a complete and competitive braking solution, backed with the assurance afforded by Borg & Beck, a globally recognised brand with original equipment heritage.