Needle Roller Bearing

74555A

(NSN) National Stock Number

3110-00-198-1775

Federal Supply Classification

3110 Unmounted Antifriction Bearings

Item Name Code

00051

Schedule B Code

8482400000

Summary

0.5000 inches nominal overall width, 0.3750 inches nominal bore diameter, 0.6250 inches nominal overall outside diameter, ground surface finish, pressed retainer fabrication method, rigid alignment type

DAC	HCC	DMIL	RNCC
5	-	-	5

RNVC	SADC	MSDS	RNAAC
9	-	-	ZZ

Identification

A single or multiple-row antifriction bearing used with or without inner or outer races characterized by relatively small size rollers usually not ranging above 0.250 inch (6.35mm) diameter and generally longer in length in relation to diameter.

INC	FIIG	Concept	Condition
00051	A044A0	-	1

Specifications

Overall Width

0.5000 inches nominal

Details

An overall measurement taken at right angles to the length of an item,in distinction from thickness.

Bore Diameter

0.3750 inches nominal

Details

The length of a straight line which passes through the center of a circular bore,and terminates at the circumference.

Overall Outside Diameter

0.6250 inches nominal

Details

The overall length of a straight line which passes through the center of an item,and terminates at the outside circumference.

Surface Finish

ground

Details

An additional finishing process by which the surface of an item is altered in respect to polishing,grinding,and the like.

Retainer Fabrication Method

pressed

Details

The means used in manufacturing the retainer.

Alignment Type

rigid

Details

Indicates the type of alignment utilized whereby the item will adjust axially for misalignment.

Standard Tolerance Designation

afbma std tolerance for industrial needle bearings

Details

The standard tolerance designation indicating the manufactured limitations of the item as established by the various specifications and standards.

Special Features

oil hole in outer ring; extra capacity outer ring

Details

Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification on one or more other functions.

Material

steel overall

Details

The chemical compound or mechanical mixture properties of which the item is fabricated.

Style Designator

non-separable, open end, drawn shell

Details

The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
45753D	29930	5	-	5	9	-	ZZ
X380	77260	5	-	5	9	-	ZZ
76753	14892	5	-	5	9	-	ZZ
148448	24617	5	-	5	9	-	ZZ
148457	24617	5	-	5	9	-	ZZ
148476	24617	5	-	5	9	-	ZZ
173487	24617	5	-	5	9	-	ZZ
1550-131	00988	5	-	5	9	-	ZZ
1550-31	00988	5	-	5	9	-	ZZ
BH-68	60380	5	-	5	9	-	ZZ
BH-68-OH	60380	5	-	3	9	-	ZZ
BH68X	60380	5	-	5	9	-	ZZ
BH68X0H	60380	5	-	5	9	-	XX
74555	1ML14	5	-	5	9	-	ZZ
60-51-246	51228	5	-	5	9	-	ZZ
BH-68	5XMS1	5	-	5	1	-	ZZ
BH-68-AID	5XMS1	5	-	3	2	-	ZZ
ME113	66289	5	-	5	9	-	ZZ