d - 17 mm

Fw - 22 mm

D - 30 mm

B - 13 mm

C - 13 mm

r5 min. - 0,3 mm

Weight - 0,039 Kg

Basic dynamic load rating (C) - 11,5 kN

Basic static load rating (C0) - 15,1 kN

(Grease) Lubrication Speed - 12000 r/min

(Oil) Lubrication Speed - 19000 r/min

• Model Number: NA4903
• Inner Diameter：17mm Outer Diameter：30mm Width：13mm
• Type：Needle Roller Bearings
• Update date：2025-12-17
• Application:ignition system,special broaching machine,Vertical pull,Automation,Roller mill,marine analysis,powder metallurgy,experimental equipment,steam Hydraulic control element,glass processing machine,extruder
• Similar models:NBS NA49032RS ISO RNA4903-2RS Timken RNA4903.2RS NTN RNA4903L CX NA4903 JNS RNA4903M NTN NA4903LL NTN RNA4903LL CX RNA4903-2RS NTN NA4903L
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903 products，there is large inventory of MPZ NA4903 . We has been built up long-term cooperation with MPZ company, could make a bulk order of the NA4903 Which MPZ 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
  1203-2RS	17	40	12	ZEN	Self-Aligning Ball Bearings
  20213-K-TVP-C3	65	120	23	FAG	Spherical Roller Bearings
  294/710-E1-MB	710	1220	308	INA	Thrust Roller Bearings
  23988 CCK/W33	600	440	118	SKF	Spherical Roller Bearings
  3211 ZZ	55	100	33,3	ISO	Angular Contact Ball Bearings
  53410U	50	110	50	NSK	Thrust Ball Bearings
  60/900	900,000	1280,000	170,000	NTN	Deep Groove Ball Bearings
  7326C	130	280	58	KOYO	Angular Contact Ball Bearings
  GAKR 18 PB	18	35	23	INA	Plain Bearings
  NK25/16	25	33	16	ZEN	Needle Roller Bearings
  NUP3311	55	120	49,2	ISO	Cylindrical Roller Bearings
  PW25550043CSHD	25	55	43	PFI	Angular Contact Ball Bearings
  R10/13	10	13	13	KOYO	Needle Roller Bearings
  RA 20 0352				SIGMA	Thrust Ball Bearings
  RNA0-22X30X26ZW	22,000	30,000	26,000	NTN	Needle Roller Bearings
  RNAO35x47x32	35	47	32	ISO	Cylindrical Roller Bearings
  ZKLF3080-2RS-2AP	30	80	56	INA	Thrust Ball Bearings
  MCS414	70	180	42	Rollway (Bronze Cage)	CYLINDRICAL ROLLER BEARINGS
  53208-U				CONSOLIDATED	THRUST BALL BEARINGS WITH SPHERICAL SEATING RING
  LER-40	2.5625		12.64	CONSOLIDATED	TRIPLE RING ALUMINUM SEALS FOR SAF TYPE PILLOW BLOCKS