Tapered Roller Bearing

12251N

(NSN) National Stock Number

3110-00-100-4148

Federal Supply Classification

3110 Unmounted Antifriction Bearings

Item Name Code

00021

Schedule B Code

8482200030

Summary

1.0938 inches nominal overall width, 1.5000 inches nominal bore diameter, 3.7500 inches nominal overall outside diameter, 0.0930 inches nominal backface corner radius, 0.2188 inches nominal standout width, 0.1400 inches nominal cone corner radius

DAC	HCC	DMIL	RNCC
5	-	-	5

RNVC	SADC	MSDS	RNAAC
1	-	-	KZ

Identification

A cylindrical device in which the inner cone or outer cup turns upon a single or double row of tapered hardened rollers which roll easily in a race, thus minimizing friction and designed to carry a radial load and capable of sustaining axial thrust. Excludes:bearing,roller,thrust.

INC	FIIG	Concept	Condition
00021	A044A0	-	1

Specifications

Overall Width

1.0938 inches nominal

Details

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

Bore Diameter

1.5000 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

3.7500 inches nominal

Details

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

Backface Corner Radius

0.0930 inches nominal

Details

None.

Standout Width

0.2188 inches nominal

Details

None.

Cone Corner Radius

0.1400 inches nominal

Details

None.

Cone Width

1.1772 inches nominal

Details

None.

Cup Width

0.8750 inches nominal

Details

A measurement taken at right angles to the length of the cup,in distinction from thickness.

Retainer Fabrication Method

pressed

Details

The means used in manufacturing the retainer.

Standard Tolerance Designation

afbma class 2

Details

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

Material

steel overall

Details

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

Style Designator

straight bore, normal angle

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
U279	92392	5	-	5	9	-	XX
444-432	01212	5	-	5	1	-	XX
Z998	10695	X	-	5	1	-	XX
444-432	31974	5	-	5	1	-	XX
12262N	0AT62	5	-	5	1	-	KZ
U279	25681	5	-	5	9	-	ZZ
12251N	93236	5	-	5	9	-	KZ
12262N	93236	5	-	5	9	-	KZ
432444	60038	5	-	5	9	-	XX
444-432	60038	X	-	3	2	-	XX

Material and Special Handling

Hazardous material, precious metals, criticality, and electrostatic discharge indicators.

HMIC	PMIC	ESD/EMI	Criticality
N	U	-	-

Freight

Universal / National Freight and Handling Information

UFC	HMC	LTL	LCL
58860	-	P	-

RVC	WCC	TCC	SHC
-	742	Z	9

Certified Supplier

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Manufacturer

SIEMENS ENERGY, INC. DBA DRESSER-RAND

CAGE: 0AT62

PAINTED POST , NY , 14870-1352

UNITED STATES

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FAQs

Frequently asked questions for NSN 3110-00-100-4148

What is the NIIN of the NSN 3110-00-100-4148?

The National Item Identification Number (NIIN) of the NSN 3110-00-100-4148 is 00-100-4148

When the NSN 3110-00-100-4148 was assigned to the Federal Catalog?

It was assigned 61 years ago, on Tue, Jan 1, 1963

Does the NSN 3110-00-100-4148 contain any precious metals?

Type/content is unknown

Does the NSN 3110-00-100-4148 contain any hazardous material?

No data in HMIRS

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