6221N Deep Groove Ball Bearing Specifications
Bore d (mm)
105
Outer D (mm)
190
Width B (mm)
36
Dynamic rating Cr (kN)
135
Static rating Cor (kN)
102
Grease limit speed (r/min)
3200
Oil limit speed (r/min)
3800
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 6221N?
RUIST 6221N Deep Groove 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 6221N carry?
Dynamic load rating Cr = 135 kN and static load rating Cor = 102 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 6221N typically used?
Deep Groove Ball Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 6221N replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 105 mm, OD 190 mm and width 36 mm match ISO dimensions, 6221N is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.