NA4864 Needle Roller Bearing Specifications
Bore d (mm)
320
Outer D (mm)
400
Width B (mm)
80
Dynamic rating Cr (kN)
605
Static rating Cor (kN)
—
Grease limit speed (r/min)
—
Oil limit speed (r/min)
—
Frequently Asked Questions / FAQ
What are the exact dimensions of RAYSDE NA4864?
RAYSDE NA4864 Needle Roller Bearing: bore d = 320 mm, outer diameter D = 400 mm, width/height B = 80 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RAYSDE NA4864 carry?
Dynamic load rating Cr = 605 kN and static load rating Cor = — kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RAYSDE NA4864 typically used?
Needle Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RAYSDE NA4864 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 320 mm, OD 400 mm and width 80 mm match ISO dimensions, NA4864 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.