Bearing NK45/20 (AST)

Needle Roller Bearings, Precision - Metric Series NK45/20

Bearing number : NK45/20

Size (mm) : 45x55x20

Brand : AST

Bore Diameter (mm) : 45

Outer Diameter (mm) : 55

Width (mm) : 20

Bearing dimensions and specification in AST catalogue:

(dimensions in mm)

Bearing Type - Single Row

Outer Dia (D) - 55.0000

Width (B) - 20.0000

Dynamic Load Rating (Cr) - 27,500

Static Load Rating (Cor) - 53,000

Max Speed (Oil) (X1000 RPM) - 10,000

Shaft (Fw) - 45.000

Weight (g) - 91.50

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.

Designation

Bore Dia, mm

Outer Dia, mm: