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：2025-04-19
• Application:tray industry,Display Devices,walking Food processing machinery and equipment,DC generators,security equipment,Medical room equipment,metallurgical mold,vacuum filter,glass processing machine,hook,medical equipment
• Similar models:IKO RNA4903U CRAFT NA4903 IKO NA4903U Timken NA4903 Timken RNA4903 JNS RNA4903 NBS RNA4903RS SKF RNA4903 Timken RNA4903RS ISO RNA4903-2RS
• 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.

• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  11305	25	62	17	ISO	Self-Aligning Ball Bearings
  1319K	95	200	45	SKF	Self-Aligning Ball Bearings
  21311	55	120	29	NTN	Spherical Roller Bearings
  32211	55	100	26,75	PFI	Tapered Roller Bearings
  51102 V/HR22T2	26	15	9	SKF	Thrust Ball Bearings
  51330	150	250	80	KOYO	Thrust Ball Bearings
  54216U	65	115	51	KOYO	Thrust Ball Bearings
  6908-2NKE	40	62	12	NACHI	Deep Groove Ball Bearings
  7248 B	240	440	72	ISB	Angular Contact Ball Bearings
  BA 2020 Z	31,75	38,1	31,75	IKO	Needle Roller Bearings
  GEEM80ES-2RS	80	120	74	FBJ	Plain Bearings
  LMKM35	35	52		Samick	Linear Bearings
  NA 4913	90	65	25	SKF	Cylindrical Roller Bearings
  SL02-4916	80	110	30	NTN	Cylindrical Roller Bearings
  SR12-2Z	19,05	41,275	11,113	ZEN	Deep Groove Ball Bearings
  53330U				FAG	THRUST BALL BEARINGS WITH SPHERICAL SEATING RING
  NTB2542	25	42	2	IKO	THRUST NEEDLE BEARINGS
  BC5-9	5	9	2.5	NTN	DEEP GROOVE BALL BEARINGS
  90SD23BRF4	90	190	64	Torrington (Old No.)	SPHERICAL ROLLER BEARINGS
  RXLS-11	11.0000	14.5000	1.7500	CONSOLIDATED	CYLINDRICAL ROLLER BEARINGS