Zimbabwe – Brake beam guides were supplied to a railway in Zimbabwe.
Prior to polypropylene brake beam guides being introduced, excessive wear had been found to occur between the brake beam and the guide, causing the brake shoe to be applied unevenly to the wheel. Both the guide and the brake shoe wore unevenly leading to their premature replacement.
With the introduction of polypropylene brake beam guides, the African railway has experienced increased life of brake shoes, guides and beams; the elimination of uneven wear on brake beam guides and brake shoes; good braking efficiency; smoother brake beam release, which eliminates brake shoe drag on wheel; and maintenance and operational cost savings on brake shoes, wheels and tracks.
In addition, the brake beams were found to run true with the correct angle of operation between the brake shoe and wheel.
Vesconite Bearings developed Vesconite Hilube brake beam guides, made of a superior wear material, following the successful use of the polypropylene guides.