7221A Angular Contact Ball Bearing Specifications
Bore d (mm)
105
Outer D (mm)
190
Width B (mm)
36
Dynamic rating Cr (kN)
188
Static rating Cor (kN)
132
Grease limit speed (r/min)
5100
Oil limit speed (r/min)
6800
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 7221A?
RUIST 7221A Angular Contact Ball Bearing: bore d = 105 mm, outer diameter D = 190 mm, width/height B = 36 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 7221A carry?
Dynamic load rating Cr = 188 kN and static load rating Cor = 132 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 7221A typically used?
Angular Contact Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 7221A replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 105 mm, OD 190 mm and width 36 mm match ISO dimensions, 7221A is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.