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：2025-12-09
Application:metal mold,Insect Count,Material handling equipment,ventilation fans,CNC,climb ladder,woodworking machinery,journal lathe,generator,Spectrum Products,Gas turbine
Similar models:RNA 4903 NA 4903 RS NA 4903 NA 4903.2RS RNA 4903.2RS
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.

Model No.	Inner Diameter	Outer Diameter	Width	Type
24036-2CS5/VT143	180	280	100	Bearings, units and housings
31326 X	130	280	72	Bearings, units and housings
6028	140	210	33	Bearings, units and housings
619/1400 MB	1400	1820	185	Bearings, units and housings
6200	10	30	9	Bearings, units and housings
6209/HR22Q2	45	85	19	Bearings, units and housings
6312 N	60	130	31	Bearings, units and housings
7004 CD/P4A	20	42	12	Bearings, units and housings
AOH 240/530 G	500	530	285	Bearings, units and housings
NATV 17	17	40	20	Bearings, units and housings
PCZ 2816 M	44.45	49.2125	25.4	Bearings, units and housings
SAF 22517 T	74.6125	-	-	Bearings, units and housings

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