Bearing NK55/25 (AST)

Needle Roller Bearings, Precision - Metric Series NK55/25

Bearing number : NK55/25

Size (mm) : 55x68x25

Brand : AST

Bore Diameter (mm) : 55

Outer Diameter (mm) : 68

Width (mm) : 25

Bearing dimensions and specification in AST catalogue:

(dimensions in mm)

Bearing Type - Single Row

Outer Dia (D) - 68.0000

Width (B) - 25.0000

Dynamic Load Rating (Cr) - 40,000

Static Load Rating (Cor) - 82,000

Max Speed (Oil) (X1000 RPM) - 8,000

Shaft (Fw) - 55.000

Weight (g) - 180.00

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.

Designation

Bore Dia, mm

Outer Dia, mm: