Size (CM): 120*60*25

Weright (KG): 25

K21016-129 is a precision-machined aerospace engine bearing retainer, engineered to AS9100D quality standards and FAA/EASA regulations, optimized for the high-pressure compressor (HPC) section of CFM56-5B/7 and IAE V2500 turbofan engines. It securely positions and locks the main shaft bearings, maintaining precise rotor concentricity, absorbing radial and axial vibration loads, and preventing bearing displacement during extreme engine operating conditions such as takeoff and high-thrust cruise.

Crafted from high-strength nickel-chromium alloy with a wear-resistant surface treatment, it operates stably at temperatures up to 600°C and resists fatigue damage. Weighing 0.8kg with a bolt-on mounting design, it enables efficient removal and replacement during HPC MRO overhauls. FAA Part 25 compliant, it is a safety-critical component for sustaining engine shaft system integrity and operational reliability.