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Bearing NK47/30 (AST)
Needle Roller Bearings, Precision - Metric Series NK47/30
Bearing number : NK47/30
Size (mm) : 47x57x30
Brand : AST
Bore Diameter (mm) : 47
Outer Diameter (mm) : 57
Width (mm) : 30
Bearing dimensions and specification in AST catalogue:
(dimensions in mm)
Bearing Type - Single Row
Outer Dia (D) - 57.0000
Width (B) - 30.0000
Dynamic Load Rating (Cr) - 43,000
Static Load Rating (Cor) - 94,000
Max Speed (Oil) (X1000 RPM) - 9,500
Shaft (Fw) - 47.000
Weight (g) - 142.00
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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