Bearings, units and housings -- Roller bearings -- Needle roller bearings -- Needle roller bearings with machined rings -- Needle roller bearings, with machined rings, with an inner ring SKF NA 4903

NA 4903

Dimensions

d		17	mm
D		30	mm
B		13	mm
F		22	mm
r_1,2	min.	0.3	mm
s	max.	0.5	mm

Abutment dimensions

d_a	min.	19	mm
D_a	max.	28	mm
r_a	max.	0.3	mm

Calculation data

Basic dynamic load rating	C	11.4	kN
Basic static load rating	C₀	16.3	kN
Fatigue load limit	P_u	1.96	kN
Reference speed		18000	r/min
Limiting speed		20000	r/min

Mass

Mass bearing

0.038

Model Number: NA 4903
Inner Diameter：17mm Outer Diameter：30mm Width：13mm
Reference speed:20000 r/min Limiting speed:18000 r/min
Type：Bearings, units and housings Roller bearings Needle roller bearings Needle roller bearings with machined rings
Details： Needle roller bearings with machined rings Needle roller bearings, with machined rings, with an inner ring
Update date：2026-04-16
Application:Cylinder Pneumatic Treatment Element,air conditioning tools,Die,cleaners,CNC,hydraulic pressure gauge,electrocardiograph,sleep monitoring,Hydraulic Equipment,container finishing,tapered grinder
Similar models:NA 4903.2RS RNA 4903.2RS NA 4903 RS NA 4903 RNA 4903
BEARING POWER International Trading Co.,Ltd. specialize in NA4903 products，there is large inventory of SKF NA 4903 Needle roller bearings with machined rings. We has been built up long-term cooperation with SKF company, could make a bulk order of the NA 4903 Which SKF NA4903 is the most authentic, must choose BEARING POWER, what a whole variety, reasonable price, guaranteed quality, prompt delivery via Global express. Any inquiry, never hesitate to E-mail or call +86-022-58519721 to contact us.

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