d - 17 mm

D - 30 mm

B - 13 mm

F - 22 mm

r_min - 0,3 mm

s - 0,5 mm / Axial displacement

m - 37 g / Weight

C_r - 12400 N / Dynamic load rating (radial)

C_0r - 14600 N / Static load rating (radial)

C_ur - 2600 N / Fatigue limit load, radial

n_G - 20000 1/min / Limiting speed

n_B - 10900 1/min / Reference speed

dimension series 49, to DIN 617/ISO 1206

• Model Number: NA4903
• Inner Diameter：17mm Outer Diameter：30mm Width：13mm
• Type：Needle Roller Bearings
• Update date：2025-12-17
• Application:medical Equipment,embroidery cloth,natural instruments,hardware,top industry,Laser Devices,manual Tools,boring bar boring bar,Garment Accessories,Industrial,thread processing machine
• Similar models:CRAFT NA4903-2RS Timken RNA4903 CX RNA4903-2RS INA NA4903-RSR INA RNA4903 INA NA4903-2RSR NTN NA4903LL CX NA4903-2RS NTN NA4903L IKO RNA4903
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• Model No.	Inner Diameter	Outer Diameter	Width	Brand	Type
  08125/08231	31.75	58,738	14,684	NSK	Tapered Roller Bearings
  22313K	65	140	48	FBJ	Spherical Roller Bearings
  30338	190	400	86	ISO	Tapered Roller Bearings
  32034*2	170	260	57	CYSD	Tapered Roller Bearings
  7319DT	95	200	45	NTN	Angular Contact Ball Bearings
  7338 A	190	400	78	ISO	Angular Contact Ball Bearings
  CSCU 070.2RS	177,8	196,85	12,7	INA	Deep Groove Ball Bearings
  K45X50X17	45,000	50,000		NTN	Needle Roller Bearings
  LM 67048/010/Q	59,131	31,75	15,875	SKF	Tapered Roller Bearings
  N230	150	270	45	ISO	Cylindrical Roller Bearings
  NU208-E-TVP2	40	80	18	FAG	Cylindrical Roller Bearings
  NUP222-E-TVP3	110	200	38	NKE	Cylindrical Roller Bearings
  PF 30 TF	30		38,1	SKF	Bearing Units
  QJ 324	120	260	55	NSK	Angular Contact Ball Bearings
  W 6007-2Z	62	35	14	SKF	Deep Groove Ball Bearings
  11212TVH	60	110	22	FAG	SELF
  NUKRE72C.DZ	72		29	FAG	NEEDLE ROLLERS
  ZKLF70155.2Z	70	155	45	INA	ANGULAR CONTACT BALL SCREW SUPPORT BEARINGS
  710SD30	710	1030	236	Torrington (Old No.)	SPHERICAL ROLLER BEARINGS
  6008-2RSNR	40	68	15	CONSOLIDATED	DEEP GROOVE BALL BEARINGS