d - 17 mm

Fw - 22 mm

D - 30 mm

B - 13 mm

C - 13 mm

r - 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：2025-12-12
• Application:crimping tools,hanging clamp,Workpiece,car instrument,other processing,test strip,non-motor vehicle Electric car,plant determination,machine tool spindle,extruder,medical equipment
• Similar models:NSK NA4903 NTN RNA4903 AST RNA4903 Timken NA4903 NSK NA4903TT ZEN RNA4903 CX NA4903 NTN RNA4903R Timken RNA4903.2RS INA RNA4903-RSR
• BEARING POWER International Trading Co.,Ltd. specialize in NA4903 products，there is large inventory of Timken NA4903 . We has been built up long-term cooperation with Timken company, could make a bulk order of the NA4903 Which Timken 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
  230/1120R	1120	1580	345	KOYO	Spherical Roller Bearings
  231/500RK	500	830	264	KOYO	Spherical Roller Bearings
  4201	12	32	14	FBJ	Deep Groove Ball Bearings
  6016ZZ	80	125	22	KBC	Deep Groove Ball Bearings
  6212LU	60,000	110,000	22,000	NTN	Deep Groove Ball Bearings
  6306-2RS1	30	72	19	MPZ	Deep Groove Ball Bearings
  635-2RZ	19	5	6	SKF	Deep Groove Ball Bearings
  F684	4	9	2,5	FBJ	Deep Groove Ball Bearings
  GE 180 HS-2RS	180	290	155	ISO	Plain Bearings
  HSS7010-E-T-P4S	50	80	16	FAG	Angular Contact Ball Bearings
  K 81118-TVPB	90	120	9	NKE	Thrust Roller Bearings
  RUS228	169,000	250,000	42,000	NTN	Cylindrical Roller Bearings
  UCPA208-24	38,1		49,2	KOYO	Bearing Units
  X32936M/Y32936M	180	250	45	Timken	Tapered Roller Bearings
  CSEF055	5.5000	7.0000	.7500	INA	ANGULAR CONTACT BALL BEARINGS
  HMV18E			40	SKF	HYDRAULIC NUTS
  KB075ARO	7.5000	8.1250	.3125	KAYDON	ANGULAR CONTACT BALL BEARINGS
  NU2213E	65	120	31	Torrington	CYLINDRICAL ROLLER BEARINGS
  81118			9	Torrington	THRUST ROLLER BEARINGS
  H-3044x715/16	220	260		CONSOLIDATED	ADAPTERS