Description

*** JTEKT (Formerly Koyo Brand) ***

Machined Type Needle Roller Bearing with Inner Ring (NKJ)

NKJ, needle roller bearing with the inner ring.

About Metric Series Needle Roller Bearings with Inner Ring

This applies to the NKJ, NA, and NAO series.
When it is impractical to finish the shaft to meet the desired raceway design requirements, an inner ring may be used.
Standard needle roller bearings are available with inner rings (such as the NA Series) to form complete bearings.
Bearings furnished with inner rings meet the quality requirements in accordance with ISO standards.
For inner- and outer-ring tolerances, the metric series 1206 covering radial bearings.
Bearings to more precise tolerance classes, P6 and P5, may be obtained upon request.
The metric series bearings may be obtained with radial internal clearance in accordance with ISO Standard 5753, also specified for cylindrical roller bearings.
Mostly, they follow the normal (C0) radial clearance group, although follow the normal (C0) radial clearance group, although bearings to clearance groups C2, C3, and C4 may be made available on request.

Specifications

AIMS SKU A0156998

Brand Koyo

Model Number NKJ42/20/KOYO

Outside Diameter 20

Width (mm) 57

S(1) (in) 0.012

Speed Rating Oil Min-1 5900

S(1) (mm) 0.3

Rs Min (in) 1.8504

Speed Rating Grease Min-1 58.5

Load Rating Static C0 (lbf) 6740

Load Rating Dynamic C (lbf) 0.079

Fw (in) 0.787

Load Rating Static C0 (kn) 30

Load Rating Dynamic C (kn) 2

rs min (mm) 47

B (in) 2.2441

D (in) 1.6535

Fw (mm) 42 mm

Bore Diameter 20 mm

Shaft Diameter (in) 13200

Width 57 mm

Outside Diameter (mm) 42

Inside Diameter (mm) 42

Type Needle Roller Bearing

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Needle Roller Bearings

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