The thrust bearing outer runner rubbing with bearing housing Deep Groove ball bearing having oscillating movement Ball bearing 0.075 to 0.14mm Cylindrical Roller bearing 0.16 to 0.22mm Bearing housing Thrust Bearing face plate Thrust Bearing locking spacer Circlip Thrust bearing outer clearance 0.70mm The thrust bearing outer runner rubbing with bearing housing The cylindrical roller bearing has higher internal clearance then ball bearing this clearance difference forces to move the ball bearing along with rotor shaft Clearance between Bearing housing and the Ball bearing outer runner 0.70mm this clearance allows ball bearing to move with in the cylindrical bearing radial clearance

Motor Drive End Thrust Bearing Arrangement Proposal Bearing housing Spherical Bearing 0.22 to 0.29mm Thrust Bearing locking spacer Circlip Adopter Sleeve Bearing housing Ball bearing Thrust Bearing locking spacer Circlip Thrust Bearing face plate Thrust bearing outer clearance 0.70mm Spherical Roller Bearing – Proposal Spherical roller bearing is suitable for both radial and axial loads. Adding load carrying capacity to the fixed bearing Internal clearances of the spherical bearing is more then cylindrical roller bearing so the spherical roller bearing will not going to share any radial load Ball Bearing – Present

BO3151.01,02 Motor And Fan Bearings Dimensions & Internal Clearances Location Of Bearing Bearings ID OD Width Internal Radial Clearance Motor Thrust Bearing 6044M/C3 Ball Bearing 220mm 340mm 56mm 0.075 to 0.14mm Motor Radial bearing NU1044M/C3 Cylindrical Roller Bearing 0.16 to 0.22mm Fan Fixed Bearing RTL 10 Sleeve Bearing With Thrust Collar 250mm -- 450mm 0.27 to 0.40mm Fan Free Bearing RTL 10 Sleeve Bearing Bearing Dimensions comparison Ball Bearing Vs Spherical Roller Bearing Bearings ID OD Width Internal Radial Clearance 6044M/C3 Ball Bearing 220mm 340mm 56mm 0.075 to 0.14mm 23944CC/C3 Spherical Roller Bearing 300mm 60mm 0.22 to 0.29mm

Bearing Load Comparison - Ball Bearing Vs Spherical Roller Bearing Type of Load   Ball Bearing 6044M/C3 Cylindrical Bearing NU1044M/C3 Cylindrical Bearing NU1044M/C4 Total Load Static Radial Load - C0 290kN 735kN 1760kN Dynamic Radial Load - C 247kN 495kN 1237kN Axial Load - Fa 145kN Spherical Roller Bearing 29344 CC/C3 1080kN 2550kN 630kN 1620kN Note: Deep Groove Ball Bearing: Pure Axial Load Fa ≤ 0.5C0 Spherical Roller Bearing : Pure Axial load P = Fa