4944X3DM Bearing Specifications
Bore d (mm)
220
Outer D (mm)
309.5
Width B (mm)
76
Dynamic rating Cr (kN)
250
Static rating Cor (kN)
381
Grease limit speed (r/min)
1100
Oil limit speed (r/min)
1500
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST 4944X3DM?
RUIST 4944X3DM Bearing: bore d = 220 mm, outer diameter D = 309.5 mm, width/height B = 76 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST 4944X3DM carry?
Dynamic load rating Cr = 250 kN and static load rating Cor = 381 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST 4944X3DM typically used?
Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST 4944X3DM replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 220 mm, OD 309.5 mm and width 76 mm match ISO dimensions, 4944X3DM is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.