7311BMDB Angular Contact Ball Bearing Specifications
Bore d (mm)
55
Outer D (mm)
120
Width B (mm)
58
Dynamic rating Cr (kN)
127
Static rating Cor (kN)
113
Grease limit speed (r/min)
3800
Oil limit speed (r/min)
5000
Frequently Asked Questions / FAQ
What are the exact dimensions of RAYSDE 7311BMDB?
RAYSDE 7311BMDB Angular Contact Ball Bearing: bore d = 55 mm, outer diameter D = 120 mm, width/height B = 58 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RAYSDE 7311BMDB carry?
Dynamic load rating Cr = 127 kN and static load rating Cor = 113 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RAYSDE 7311BMDB 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 RAYSDE 7311BMDB replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 55 mm, OD 120 mm and width 58 mm match ISO dimensions, 7311BMDB is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.