d - 17 mm

F - 22 mm

D - 30 mm

B - 13 mm

C - 13 mm

r min. - 0,3 mm

s - 0,5 mm

da min. - 19 mm

Da max. - 28 mm

ra max. - 0,3 mm

Weight - 0,037 Kg

Basic dynamic load rating (C) - 11,2 kN

Basic static load rating (C0) - 14,6 kN

(Grease) Lubrication Speed - 12 000 r/min

(Oil) Lubrication Speed - 18 000 r/min

• Model Number: NA4903R
• Inner Diameter：17mm Outer Diameter：30mm Width：13mm
• Type：Needle Roller Bearings
• Update date：2025-12-17
• Application:respirator,sanitation facilities,sewage pump,cleaning agent,Storage Device,power source,miscellaneous instruments,test equipment,Rolling mill gear box,DC generators,stamping die
• Similar models:JNS NA4903M Timken NA4903 CRAFT NA4903 NBS RNA4903 ISO RNA4903 NTN NA4903LL KOYO RNA4903.2RS NBS RNA4903RS ZEN RNA4903 INA RNA4903-XL
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903R products，there is large inventory of NTN NA4903R . We has been built up long-term cooperation with NTN company, could make a bulk order of the NA4903R Which NTN NA4903R 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
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  CRF-32219 A	95,000	170,000	45,500	CRAFT	Wheel Bearings
  7234BDT	170	310	52	NTN	Angular Contact Ball Bearings
  AB41328S02	66	97	19	SNR	Deep Groove Ball Bearings
  BCH910PR	14,288	20,638	15,875	INA	Needle Roller Bearings
  RNA3070	88	95	38	Timken	Needle Roller Bearings
  NA4876	380	480	100	NTN	Needle Roller Bearings
  NA6913TT	65	90	46	NSK	Needle Roller Bearings
  UCPE203	17			SNR	Bearing Units
  CFD-15/8	.6250	1.6250	.8750	McGill	ROLLER CAM FOLLOWERS
  DLRn30				RIV	THRUST BALL BEARINGS WITH SPHERICAL SEATING RINGS
  XLS-9	9.0000	12.0000	1.5000	FED	DEEP GROOVE BALL BEARINGS
  6315RSNR	75	160	37	STEYR	DEEP GROOVE BALL BEARINGS
  NF-213	65	120	23	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS
  MR-18-N			1.0000	CONSOLIDATED	NEEDLE BEARINGS
  H-2311x17/8	55	75		CONSOLIDATED	ADAPTERS
  2x23/16x21/2	2.0000	2.1875	2.5000	CONSOLIDATED	JOURNAL ROLLER BEARING OUTER RACES