(dimensions in mm)

Bearing Type - Single Row, Heavy Duty

Outer Dia (D) - 30.0000

Width (B) - 13.0000

Dynamic Load Rating (Cr) - 11,000

Static Load Rating (Cor) - 14,600

Max Speed (Oil) (X1000 RPM) - 21,000

Shaft (Fw) - 22.000

Weight (g) - 22.20

Material - 52100 Chrome steel, or equivalent

The bearing must be used with a hardened inner ring, or a hardened shaft.

Some sizes are available with either a single seal or two seals.

• Model Number:RNA4903
• Inner Diameter：22mm Outer Diameter：30mm Width：13mm
• Type：Needle Roller Bearings
• Update date：2025-12-24
• Application:position switch,respirator,metallurgy,extruder,lifting equipment Hoisting hoist,vertical pull,Pneumatic Control Valves,Beauty and Body,auto tools,Hydraulic Equipment,stamping die
• Similar models:SKF RNA4903 NBS NA4903 NTN RNA4903 SKF NA4903RS KOYO NA4903 NBS NA49032RS CX NA4903-2RS NBS RNA4903RS NTN NA4903R NSK RNA4903TT
• BEARING POWER International Trading Co.,Ltd. specialize in RNA4903 products，there is large inventory of AST RNA4903 . We has been built up long-term cooperation with AST company, could make a bulk order of the RNA4903 Which AST RNA4903 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
  241/500R	500	830	325	KOYO	Spherical Roller Bearings
  32BG05S1-2DSL	32	55	23	NACHI	Angular Contact Ball Bearings
  6303LLUNR	17,000	47,000	14,000	NTN	Deep Groove Ball Bearings
  6581X/6535	90	161,925	53,975	Timken	Tapered Roller Bearings
  6838-ZZ	190	240	24	CYSD	Deep Groove Ball Bearings
  EXFS310	50			SNR	Bearing Units
  K25X29X10	25	29		INA	Needle Roller Bearings
  NF 1026	130	182		NACHI	Cylindrical Roller Bearings
  NJ3868	340	420	60	ISO	Cylindrical Roller Bearings
  RNAO16X24X20	16	24	20	KOYO	Needle Roller Bearings
  UCX08	40,000	85,000	49,2	NTN	Deep Groove Ball Bearings
  SBPF201	12		22	KOYO	Bearing Units
  UK208L3	40	80	34	KOYO	Deep Groove Ball Bearings
  NUP2332	160	340	114	FAG	CYLINDRICAL ROLLER BEARINGS
  239/600	600	800	150	Torrington	SPHERICAL ROLLER BEARINGS
  1032	3.8437	2.4375		NICE	THRUST BALL BEARINGS
  318PP	90	190	43	NH	DEEP GROOVE BALL BEARINGS
  6303.RS	17	47	14	STEYR	DEEP GROOVE BALL BEARINGS
  AT-755				CONSOLIDATED	THRUST ROLLER BEARING WITH SPHERICAL SEATING RING
  ZARF-2590-L	25	90		CONSOLIDATED	NEEDLE BEARINGS