Azimuth Gearbox Assembly Procurement

n 1993) with only one (1) spare. Over the course of program history, the X-Band has experienced a catastrophic failure of one (1) azimuth gearbox impacting mission execution, most recently 2018. The X-Band radar rests on a unique azimuth bull gear and associated azimuth bearing assembly that permits

the radar to be rotated in azimuth direction. The azimuth gearbox also includes a unique pinon gear that aligns with the bull gear to result in slower rotation but greater torque at the bull gear's output. The operating conditions of this