Detected leakages from gearboxes using helium as a tracer gas
The precise inspection of gearbox housings and mounted gearboxes for leaks is becoming increasingly important. While in the past cast aluminum housings were often tested by using the differential pressure method, today’s test specifications require a more precise leak test procedure.
Test object
- Gearboxes
- Hybrid gearboxes
From Practice
Helium leak test for hybrid gearboxes using fully automated helium sniffing process
Technical specifications
- Effective cycle time: 45 seconds
- Capacity: 80 parts per hour
- Test pressure: 100 mbar at −500 mbar vacuum in the gearbox
- Leak rate: 1 ⋅ 10−2 mbar ⋅ l/s
Helium leak test – hybrid gearboxes
Technical specifications
- Effective cycle time: 140 seconds
- Capacity: 25 parts / h
- Test pressure: 300 mbar
- Leakage rate: 3.6 ⋅ 10–3 mbar ⋅ l/s