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Bearing RNA4903 (AST)
Needle Roller Bearings, Precision - Metric Series RNA4903
Bearing number : RNA4903
Size (mm) : 22x30x13
Brand : AST
Bore Diameter (mm) : 22
Outer Diameter (mm) : 30
Width (mm) : 13
Bearing dimensions and specification in AST catalogue:
(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.
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