The LO strainer basket rating in microns is which option?

• A. 20 micron
• B. 40 micron
• C. 60 micron
• D. 80 micron

Answer: (B)

In a turbine’s lubrication oil system, the strainer basket's role is to remove debris before oil reaches the pump and bearings. The micron rating tells you the size of particles the basket is designed to trap. A 40-micron rating provides a good balance: it catches most abrasive particles large enough to cause wear while still allowing adequate oil flow and avoiding frequent clogging. A finer 20-micron basket would risk clogging and restricting flow, potentially starving the system of oil during high demand. A coarser 60 or 80 micron basket would let larger particles through, increasing wear risk on bearings and gears. So, 40 microns is the appropriate rating for effective protection without compromising flow.