Definition of FAILSAFE: The automatic or manual actuation of a braking system immediately subsequent to a loss of energy in the braking system that would cause the performance of that to be less than that originally designed for and/or as specified.

NCS Engineering's MaximB braking systems are completely enclosed sealed units working on the principle of oil shear between the stationary and rotating friction discs to provide braking force.The units are purpose designed for mining applications, suited to underground and open cast mining operations.All brake derivatives are manufactured, assembled and tested in-house. Brake assembly is controlled by build books, requiring QC approval at various points during the assembly process. Upon assembly completion, every brake undergoes a testing phase to ensure that they meet the required mining specification, including dynamic and static testing.

   

Brake Operations

  • Service Braking - the service brake is applied by exerting pressure using the standard foot brake valve;

  • Emergency Braking - the emergency brakes will apply when the emergency/park brake valve is actuated by the operator and/or when the engine of the vehicle stalls or is switched off and the system experiences hydraulic failure.

The braking systems are SABS approved to SANS 1589:1994. In addition, it has also been approved to equivalent US and Australian specifications.

Brake Series

The following Seies of Braking Systems are available:

  • 500 Series: Applicable to LHDs, ADTs and UVs.

  • 300 Series: Applicable to Shuttle Cars, Trailers, UVs and medium sized "trucks", including Toyota Hino.

  • 200 series: Applicable to Commercial Vehicles, including Toyota Hilux and Landcruisers, Isuzu, Nissan , Mahindra, Toyota Dyna, Toyota Condor, etc.

 

The general brake features/advantages include the following:

  • Modular in design so easily adapatable to many different axles;

  • Liquid Cooled - Oil Immersed;

  • Fully enclosed;

  • Standard cooling fluid utilised;

  • External wear pin indicator to easily indicate friction disc wear;

  • Simple interfacing with minimal OEM product modification required;

  • Low fitment cost with minimal production dontime;

  • Affordability;

  • Low operational costs;

  • Low maintenance costs and easily maintained;

  • Low service exchange/repair costs and turnaround times.

 

NCS Engineering has undertaken several specialised conversions for customers requiring the Maxim-B principles to be incorporated on existing plant and equipment, two of which are listed below.

Converting air applied braking systems

NCS Engineering has designed and developed a new braking system for Barlows/Caterpillar for their Meer Cat 356 LHD machine. The new system converts the inboard axle brakes from air applied spring release service brakes (with the failsafe/park brake being a wheel mounted dry disc brake) to a spring applied hydraulic release brake, providing both service and failsafe/park braking with one single brake, eliminating the need for the wheel end brakes.

These machines are currently supplied to the local market and are also being exported to Australia, after successfully passing the strict Australian brake specification requirements.

Converting dry disc caliper braking systems

Another conversion has also been completed for a Canadian OEM, converting dry disc caliper brakes on Caterpillar AL-50 axles to Maxim-B SAFHAS (spring applied failsafe, hydraulic release service) braking systems with forced cooling.

   
 

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Last updated February 2013.