Design Improvements

Single vs Twin Ring Thrust Flinger

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

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Thrust Bearing 180° vs 360°

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.

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GT15-25 Thrust Bearing Design

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.

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Difference Between Stamped Strip and Hot Forged

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

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GT15 Journal Bearing Evolution

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

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GT15 Seal Plate

Seal plates are prone to failing around the compressor wheel diameter, to improve the strength the Melett  seal plate has been designed to incorporate extra strengthening ribs.

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GT15 Nozzle Assembly Design

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

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