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Bearing NK7/12TN (AST)
Needle Roller Bearings, Precision - Metric Series NK7/12TN
Bearing number : NK7/12TN
Size (mm) : 7x14x12
Brand : AST
Bore Diameter (mm) : 7
Outer Diameter (mm) : 14
Width (mm) : 12
Bearing dimensions and specification in AST catalogue:
(dimensions in mm)
Bearing Type - Single Row
Outer Dia (D) - 14.0000
Width (B) - 12.0000
Dynamic Load Rating (Cr) - 3,650
Static Load Rating (Cor) - 3,600
Max Speed (Oil) (X1000 RPM) - 31,000
Shaft (Fw) - 7.000
Weight (g) - 8.20
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.
The roller retainer is made from molded plastic.
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