N1921 Bearing Specifications
Bore d (mm)
105
Outer D (mm)
145
Width B (mm)
20
Dynamic rating Cr (kN)
79000
Static rating Cor (kN)
117000
Grease limit speed (r/min)
9000
Oil limit speed (r/min)
10800
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST N1921?
RUIST N1921 Bearing: bore d = 105 mm, outer diameter D = 145 mm, width/height B = 20 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST N1921 carry?
Dynamic load rating Cr = 79000 kN and static load rating Cor = 117000 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST N1921 typically used?
Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST N1921 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 105 mm, OD 145 mm and width 20 mm match ISO dimensions, N1921 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.