NA4907-2RS Needle Roller Bearing Specifications
Bore d (mm)
35
Outer D (mm)
55
Width B (mm)
21
Dynamic rating Cr (kN)
31
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 NA4907-2RS?
RAYSDE NA4907-2RS Needle Roller Bearing: bore d = 35 mm, outer diameter D = 55 mm, width/height B = 21 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RAYSDE NA4907-2RS carry?
Dynamic load rating Cr = 31 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 NA4907-2RS 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 NA4907-2RS replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 35 mm, OD 55 mm and width 21 mm match ISO dimensions, NA4907-2RS is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.