Instructions On How To Measure Turbocharger Wheels-refoneturbo.com

Instructions on How to Measure Turbocharger Wheels

08 Aug 2022

Wheel diameter measurement is essential when replacing or upgrading a turbocharger.However, measuring wheel diameter is not as simple as pulling out a tape measure or caliper. You need to measure data at different points, such as inducers (incoming), exducer (outgoing). At the same time, you should also pay attention to the measurement method of the different number of blades.

The measurement tools we generally choose are Coordinate Measuring Machine, Imaging instrument and Vernier calipers. Coordinate Measuring Machine, Imaging instrument are used for accurate measurement, but vernier calipers are generally used the most. It is easy to calibrate, easy to operate, and has a variety of measurement functions and data integration.

Turbine wheels generally have 8, 9, 10, 11, 12 blades. The calculation of the compressor wheels blades is somewhat different from that of a turbine wheels. The compressor wheels is divided into long wheels and long & short wheels .

The measurement method of Turbine wheels and compressor wheels is the same, the caliper is clamped on the wheel diameter and the diameter data is obtained.
It is worth noting that even-numbered blades can directly get the data, and odd-numbered blades need to be multiplied by the coefficient because of asymmetry:
5 blades: 1.0515
7 blades: 1.0257
9 blades: 1.0154
11 blades: 1.0103
13 blades: 1.00734