K30X40X18 Needle Roller Bearing Specifications
Bore d (mm)
30
Outer D (mm)
40
Width B (mm)
18
Dynamic rating Cr (kN)
32
Static rating Cor (kN)
40
Grease limit speed (r/min)
7600
Oil limit speed (r/min)
14000
Frequently Asked Questions / FAQ
What are the exact dimensions of RUIST K30X40X18?
RUIST K30X40X18 Needle Roller Bearing: bore d = 30 mm, outer diameter D = 40 mm, width/height B = 18 mm. All dimensions follow ISO/DIN standards so it drops into existing housings without modification.
What load ratings does RUIST K30X40X18 carry?
Dynamic load rating Cr = 32 kN and static load rating Cor = 40 kN. These figures let you calculate the L10 service life under your actual radial and axial loads.
Where is RUIST K30X40X18 typically used?
Needle Roller Bearing of this size are common in electric motors, gearboxes, pumps, conveyors, fans and compressors across heavy-industry plants.
Can RUIST K30X40X18 replace a SKF, FAG, NSK or TIMKEN unit?
Yes. Because bore 30 mm, OD 40 mm and width 18 mm match ISO dimensions, K30X40X18 is dimensionally interchangeable with major-brand equivalents. Confirm clearance class (C3/C0) before ordering.