d - 20 mm

Fw - 25 mm

D - 37 mm

B - 18 mm

C - 17 mm

r min. - 0,3 mm

da min. - 22 mm

da max - 24 mm

Da max. - 35 mm

Weight - 0,0395 Kg

Basic dynamic load rating (C) - 18 kN

Basic static load rating (C0) - 13,1 kN

Limiting speed - 7 500 r/min

• Model Number:NA 4903UU
• Inner Diameter：20mm Outer Diameter：37mm Width：18mm
• Type：Needle Roller Bearings
• Update date：2026-01-01
• Application:ship special,Body shaping,tray industry,medical equipment,Anti-defibrillation pacing,survey accessories,Broadcasting System,internal combustion engine,food add,food testing,Machine Tool Accessories
• Similar models:JNS NA4903 ISO RNA4903 KOYO NA4903RS INA NA4903-RSR NTN NA4903LL ZEN RNA4903 NSK NA4903 KOYO RNA4903.2RS IKO RNA4903 SKF RNA4903.2RS
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903UU products，there is large inventory of IKO NA 4903UU . We has been built up long-term cooperation with IKO company, could make a bulk order of the NA 4903UU Which IKO NA4903UU 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
  120060/120112XP	60	112,712	66,65	Gamet	Tapered Roller Bearings
  210KDDG	50	90	20	Timken	Deep Groove Ball Bearings
  23048-2CS5K/VT143	360	240	92	SKF	Spherical Roller Bearings
  7904CTRSU	20	37	9	NSK	Angular Contact Ball Bearings
  K 18x24x12	18	24		NBS	Needle Roller Bearings
  K9X12X11,5SE	9	12		Timken	Needle Roller Bearings
  LL788349/LL788310	1066,8	1219,2	65,088	NSK	Cylindrical Roller Bearings
  NA4920	100	140	40	INA	Needle Roller Bearings
  NF3330	150	320	128	CX	Cylindrical Roller Bearings
  NJF2311 V	55	120	43	ISO	Cylindrical Roller Bearings
  SL045013-PP	65	100	46	INA	Cylindrical Roller Bearings
  UCP308	40			ISO	Bearing Units
  222-R	110	200	38	MRC	ANGULAR CONTACT BALL BEARINGS
  Q3212X5	60	110	22	New Departure	DEEP GROOVE BALL BEARINGS
  MUL322	110	240	50	Rollway	CYLINDRICAL ROLLER BEARINGS
  6309NR	45	100	25	STEYR	DEEP GROOVE BALL BEARINGS
  238/1250	1250	1500	185	CONSOLIDATED	SPHERICAL ROLLER BEARINGS
  249/1000M	1000	1320	315	CONSOLIDATED	SPHERICAL ROLLER BEARINGS
  TS-38x170mm	170		1.5000	CONSOLIDATED	TRIPLE RING LABYRINTH SEALS FOR SD
  SCE-96			.3750	CONSOLIDATED	NEEDLE BEARINGS