Bearing NK21/16 (AST)

Needle Roller Bearings, Precision - Metric Series NK21/16

Bearing number : NK21/16

Size (mm) : 21x29x16

Brand : AST

Bore Diameter (mm) : 21

Outer Diameter (mm) : 29

Width (mm) : 16

Bearing dimensions and specification in AST catalogue:

(dimensions in mm)

Bearing Type - Single Row

Outer Dia (D) - 29.0000

Width (B) - 16.0000

Dynamic Load Rating (Cr) - 13,500

Static Load Rating (Cor) - 18,700

Max Speed (Oil) (X1000 RPM) - 20,000

Shaft (Fw) - 21.000

Weight (g) - 28.10

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: