d - 17 mm

F - 22 mm

D - 30 mm

B - 13 mm

C - 13 mm

r min. - 0,3 mm

da min. - 19 mm

da max - 21 mm

Da max. - 28 mm

Weight - 0,039 Kg

Basic dynamic load rating (C) - 11,8 kN

Basic static load rating (C0) - 15,6 kN

Limiting speed - 18 000 r/min

• Model Number: NA 4903
• Inner Diameter：17mm Outer Diameter：30mm Width：13mm
• Type：Needle Roller Bearings
• Update date：2023-09-09
• Application:Tool,chromatography,casting embedding,Polymer,plastic rolling,dynamic blood pressure,wall industry,Cutting Machine,food safety,Dental Drill etc,Technical Equipment
• Similar models:ZEN RNA4903 KOYO NA4903RS NBS NA4903RS ISO NA4903 NBS RNA4903RS JNS NA4903UU NTN RNA4903R ISO NA4903-2RS IKO RNA4903 KOYO NA4903
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903 products，there is large inventory of JNS NA 4903 . We has been built up long-term cooperation with JNS company, could make a bulk order of the NA 4903 Which JNS 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.

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  350/353D	40	90,119	50,795	Timken	Tapered Roller Bearings
  4R4813	240,000	360,000	220,000	NTN	Cylindrical Roller Bearings
  67790/67720	177,8	247,65	47,625	Timken	Tapered Roller Bearings
  67TAD20	67	100	44	NACHI	Thrust Ball Bearings
  695ZZ	5	13	4	ISO	Deep Groove Ball Bearings
  7940	200	280	38	KOYO	Angular Contact Ball Bearings
  CSCC070	177,8	196,85	9,525	INA	Deep Groove Ball Bearings
  GE360-DW	360	480	160	INA	Plain Bearings
  HM88630/10	25,4	72,233	25,4	ISO	Tapered Roller Bearings
  KJ44X50X27.8	44,000	50,000		NTN	Needle Roller Bearings
  LMFP20L	20	32		Samick	Linear Bearings
  NJ2318 E	90	190	64	CX	Cylindrical Roller Bearings
  PK28X38X15.8	28,000	38,000		NTN	Needle Roller Bearings
  NF312	60	130	31	CRAFT	Cylindrical Roller Bearings
  NU316	80	170	39	NTN	Cylindrical Roller Bearings
  W636-2RS1	6	22	7	SKF	Deep Groove Ball Bearings
  BL312ZZ	60	130	31	NTN	DEEP GROOVE BALL BEARINGS
  FC-25	32		20	CONSOLIDATED	NEEDLE BEARINGS