BL311 Deep Groove Ball Bearing Specifications
Bore d (mm)
55
Outer D (mm)
120
Width B (mm)
29
Dynamic rating Cr (kN)
82.5
Static rating Cor (kN)
61.5
Grease limit speed (r/min)
5600
Oil limit speed (r/min)
6700
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST BL311?
RUIST BL311 Deep Groove Ball Bearing: bore d = 55 mm, outer diameter D = 120 mm, width/height B = 29 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST BL311 carry?
Dynamic load rating Cr = 82.5 kN and static load rating Cor = 61.5 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST BL311 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 BL311 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 55 mm, OD 120 mm and width 29 mm match ISO dimensions, BL311 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.