STS Turbine Wheels and STS Advanced Ball-Bearing

Kinugawa offer the STS (Superior Turbine Strike) line of Turbocharger Turbine Wheel and Cartridges. With a lower blade count and more aggressive blade profile, the STS 9-Blade turbine wheel takes a shorter time (up to 5-8% less) to build a boost and, at higher RPM, prevents choking as it has less inertia and is less restrictive than an 11 or 12 blades turbine wheel. The new STS 55 turbine wheel features an alternating 5+5 blade design to further improve spool times and top end flow.

The STS Advanced ceramic dual ball bearing technology improves the response speed (time needed to build boost) 10-15% as well as being more durable due to the improved shaft dynamics control. The increased power comes from the enhanced design. It utilizes an inner and outer race with rollers or balls between the two races. The inner race is pressed onto the turbo shaft, and the outer race is pressed into the CHRA. The rollers or balls replace the oil’s “job” of controlling the turbo shaft’s orientation but do still need to be lubricated.