d - 17 mm

Fw - 22 mm

D - 30 mm

B - 13 mm

C - 13 mm

r min. - 0,3 mm

da min. - 19 mm

Da max. - 28 mm

ra max. - 0,3 mm

Weight - 0,038 Kg

Basic dynamic load rating (C) - 11,6 kN

Basic static load rating (C0) - 15,4 kN

(Grease) Lubrication Speed - 12000 r/min

(Oil) Lubrication Speed - 20000 r/min

• Model Number: NA4903
• Inner Diameter：17mm Outer Diameter：30mm Width：13mm
• Type：Needle Roller Bearings
• Update date：2025-12-17
• Application:food / grain / food equipment,flow control valve,test strip,Pest Monitoring,Machine tools,Spectrum Products,Processing machinery,Industrial,decoration machinery,Performance test,Medical equipment
• Similar models:IKO RNA4903UU NBS NA49032RS KOYO NA4903RS INA NA4903 INA RNA4903-RSR CX NA4903 JNS NA4903UU IKO NA4903 NSK NA4903 JNS NA4903
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903 products，there is large inventory of NSK NA4903 . We has been built up long-term cooperation with NSK company, could make a bulk order of the NA4903 Which NSK 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	Brand	Type
  462A/453X	57,15	104,775	30,162	Fersa	Tapered Roller Bearings
  47896R/47820	95,25	146,05	33,338	KOYO	Tapered Roller Bearings
  511001	35	80	28	Timken	Deep Groove Ball Bearings
  6203HT200ZZ	17,000	40,000	12,000	SNR	Deep Groove Ball Bearings
  6211	55	100	21	FAG	Deep Groove Ball Bearings
  6806NSE	30	42	7	NACHI	Deep Groove Ball Bearings
  AST090 10580	105	110		AST	Plain Bearings
  CRD-5613	279,4	533,4	241,3	NTN	Tapered Roller Bearings
  PSL 512-301	340	378	350	PSL	Cylindrical Roller Bearings
  UCF312	60		71	ISO	Bearing Units
  UCFLX08-24	38,1			KOYO	Bearing Units
  H2317.215	85	110		FAG	ADAPTERS
  SAL10E	10		9	FAG	ROD ENDS
  SAF311	2.5625	2.0625		Torrington	PILLOW BLOCKS
  W6001-2RS1	12	28	8	SKF	DEEP GROOVE BALL BEARINGS
  LS80105	80	105		SKF	THRUST NEEDLE BEARINGS
  320/22	22	44	15	SNR	TAPERED ROLLER BEARINGS
  30319	95	200	45	STEYR	TAPERED ROLLER BEARINGS
  E20	20	47	12	SKF	MAGNETO BEARINGS
  KD-60XPO	6.0000	7.0000	.5000	CONSOLIDATED	FOUR POINT ANGULAR CONTACT BALL BEARINGS