d - 17 mm

Fw - 22 mm

D - 30 mm

B - 13 mm

C - 13 mm

r5 min. - 0,3 mm

S - 1 mm

Weight - 0,04 Kg

Basic dynamic load rating (C) - 12,2 kN

Basic static load rating (C0) - 16,4 kN

(Grease) Lubrication Speed - 20000 r/min

(Oil) Lubrication Speed - 13000 r/min

• Model Number: NA4903
• Inner Diameter：17mm Outer Diameter：30mm Width：13mm
• Type：Needle Roller Bearings
• Update date：2025-12-16
• Application:powder metallurgy,Beauty and Body,ventilation fans,wheel lathe,food safety,Hairbrush device,chuck industry,SPA equipment,electrostatic protection,metal mold,Blood coagulation reagent
• Similar models:INA NA4903-RSR CRAFT NA4903 NTN NA4903LL NBS NA4903 NBS RNA4903RS AST RNA4903 JNS NA4903M SKF RNA4903RS NSK RNA4903TT SKF RNA4903
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903 products，there is large inventory of KOYO NA4903 . We has been built up long-term cooperation with KOYO company, could make a bulk order of the NA4903 Which KOYO 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
  11590/11520	15,875	42,8625	14,2875	AST	Tapered Roller Bearings
  29264R	320	440	73	KOYO	Thrust Roller Bearings
  30209	45	85	20,75	FBJ	Tapered Roller Bearings
  5210AN	50	90	30.2	NACHI	Angular Contact Ball Bearings
  53228U	140	200	48,6	KOYO	Thrust Ball Bearings
  609-2Z	9	24	7	SKF	Deep Groove Ball Bearings
  6207 2RD C3	35	72	17	KOYO	Deep Groove Ball Bearings
  6226	130	230	40	NTN	Deep Groove Ball Bearings
  7064 A-UD	320	480	148	CX	Angular Contact Ball Bearings
  7936	180	250	33	KOYO	Angular Contact Ball Bearings
  CES209-28	44,45	85	43,7	SNR	Deep Groove Ball Bearings
  DC5019N	95	145	67	KOYO	Cylindrical Roller Bearings
  EBL.20.1094.200-1STPN	984	1198,4	56	ISB	Thrust Ball Bearings
  NK65/35	65	78	35	KOYO	Needle Roller Bearings
  RNU 310 ECP	110	65	27	SKF	Cylindrical Roller Bearings
  AXK130170	130	170	5	FAG	THRUST NEEDLE BEARINGS
  RCJ111/16	1.6875			FAF	PILLOW BLOCKS
  7210B.U(A/O)	50	90	20	FAG	ANGULAR CONTACT BALL BEARINGS
  206-SZZG	62	.203	16	MRC	DEEP GROOVE BALL BEARINGS
  6202-2ZNR	15	35	11	STEYR	DEEP GROOVE BALL BEARINGS