Design Improvements

Improved Twin Ring Design - All Melett KP35/39 CHRA’s are upgraded from single to twin ring comp end for improved sealing.

At The original BV35, BV39, KP31, KP35 & KP39 thrust bearing was the 3 pad, 180 degree design. Due to the open thrust pad area oil retention was an issue.

In the beginning, there were two main types of GT15-25 turbo, those with a sintered steel 270° and those with a 360° stamped brass alloy thrust bearing.

At Melett, we understand the different methods used to produce thrust bearings and where possible incorporate design improvements.

The GT15 journal bearings have improved over the years. They started with Melett part numbers 1102-015-100 and 1102-015-101.

Extra Strengthening Ribs - Seal plates are prone to failing around the compressor wheel diameter.

Melett introduced design improvements and developed a full back shaft and wheel solution, which reduced the risk of fatigue on the inducer diameter.

Solid Vane Design - During the design review of the GT15 nozzle assembly, Melett Engineers analysed failure modes of many units.