188251 — CONE AND ROLLERS,TAPERED ROLLER

✓ Government record, cited

— · TAPERED BEARING

PRODUCT OVERVIEW

188251: CONE AND ROLLERS,TAPERED ROLLER.

CONE AND ROLLERS,TAPERED ROLLER. Key specifications include material: STEEL COMP 630 OVERALL, corner_shape: ROUND INSIDE LEFT CORNER, flange_width: 0.1900 INCHES MINIMUM AND 0.2000 INCHES MAXIMUM IN, overall_length: 4.9400 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY, hardness_rating: 33.0 ROCKWELL C NOMINAL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-100-0690, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS

188251

NSN: 3110-00-100-0690
NIINs: 001000690, 010125599
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 24617 — GENERAL MOTORS CORP (USA)

SPECIFICATIONS

material	STEEL COMP 630 OVERALL
corner_shape	ROUND INSIDE LEFT CORNER
flange_width	0.1900 INCHES MINIMUM AND 0.2000 INCHES MAXIMUM IN
overall_length	4.9400 INCHES NOMINAL IN
surface_finish	125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
hardness_rating	33.0 ROCKWELL C NOMINAL OVERALL
style_designator	SOLID, EXTERNAL FLANGE ONE END
surface_treatment	CADMIUM LEFT END SURFACE OF BODY AND FLANGE
body_inside_diameter	4.8760 INCHES MINIMUM AND 4.8775 INCHES MAXIMUM IN
body_outside_diameter	5.0750 INCHES MINIMUM AND 5.0850 INCHES MAXIMUM IN
flange_outside_diameter	5.7400 INCHES MINIMUM AND 5.7600 INCHES MAXIMUM IN
material_document_and_classification	AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN	3110-00-100-0690

COMPONENT DIAGRAM

KEY FEATURES

•

STYLE DESIGNATOR: NORMAL ANGLE

•

CONE CORNER RADIUS: 0.1006 INCHES NOMINAL IN

•

CONE WIDTH: 1.9000 INCHES NOMINAL IN

•

STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2

•

BORE DIAMETER: 2.8750 INCHES NOMINAL IN

•

MATERIAL: STEEL OVERALL

TYPICAL APPLICATIONS

Long-term data archival and compliance retention
Offsite backup and disaster recovery
Air-gapped ransomware protection
Cold storage tier for infrequently accessed data

TECHNICAL CHARACTERISTICS

STYLE DESIGNATOR	NORMAL ANGLE
CONE CORNER RADIUS	0.1006 INCHES NOMINAL IN
CONE WIDTH	1.9000 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATION	AFBMA CLASS 2
BORE DIAMETER	2.8750 INCHES NOMINAL IN
MATERIAL	STEEL OVERALL

SUBSTITUTES & CROSS-REFERENCES 4

705195Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

762Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

62AX141Reference document

Same NSN cross-reference

Reference document — Secondary reference

FF-B-187/1Reference document

Same NSN cross-reference

Reference document — Identification reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 188251?

188251 is a CONE AND ROLLERS,TAPERED ROLLER.

What parts can replace 188251?

There are 4 known substitutes for 188251: 705195, 762, 62AX141 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 188251?

188251 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0690. This indicates validated use in U.S. government and defense supply chains.

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188251 — CONE AND ROLLERS,TAPERED ROLLER

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