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 6903

NA 6903

Dimensions

d		17	mm
D		30	mm
B		23	mm
F		22	mm
r_1,2	min.	0.3	mm
s	max.	1	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	18.7	kN
Basic static load rating	C₀	30.5	kN
Fatigue load limit	P_u	3.75	kN
Reference speed		18000	r/min
Limiting speed		20000	r/min

Mass

Mass bearing

0.072

Model Number: NA 6903
Inner Diameter：17mm Outer Diameter：30mm Width：23mm
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:marine analysis,Medical printer,medical equipment,hinge industry,Film machine,packaging machinery,Forging machine,Cutting Machine,beverage production,altimeter etc,Gear grinding machine
Similar models:NA 6903 RNA 6903
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NKI 40/20 TN	40	55	20	Bearings, units and housings
OKC 520	520		-
SA 30 ES	30	-	22	Bearings, units and housings
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YARAG 210	50	90	51.6	Bearings, units and housings
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W 634 R-2Z	4	16	5	Bearings, units and housings
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Z 005	25	-	5	Seals

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Hot number： 11200 16095 2219 K 34888 6008-Z 7014 ACE/HCP4A 81103 TN 90819 91335 NKI 35/20 TN OKBS 93 PCZ 1208 M RN-2x15.8 BF/G2 RNU 2210 ECJ SA 17 C