FF-B-187/01-221 — CUP,TAPERED ROLLER BEARING

✓ Government record, cited

— · TAPERED BEARING

PRODUCT OVERVIEW

FF-B-187/01-221: CUP,TAPERED ROLLER BEARING.

The CUP,TAPERED ROLLER BEARING is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, overall_width: 0.9375 INCHES NOMINAL IN, outside_diameter: 3.3125 INCHES NOMINAL IN, special_features: AXIAL DISTANCE BETWEEN CENTER OF CUP CONTACT LINE AND BEARING STABILITY POINT ON SHAFT AXIS 0.4300 IN. IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.1250 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 3110-00-100-0370, 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

FF-B-187/01-221

NSN: 3110-00-100-0370
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)

SPECIFICATIONS

material	STEEL OVERALL
overall_width	0.9375 INCHES NOMINAL IN
outside_diameter	3.3125 INCHES NOMINAL IN
special_features	AXIAL DISTANCE BETWEEN CENTER OF CUP CONTACT LINE AND BEARING STABILITY POINT ON SHAFT AXIS 0.4300 IN. IN
style_designator	NORMAL ANGLE
backface_corner_radius	0.1250 INCHES NOMINAL IN
standard_tolerance_designation	AFBMA CLASS 2
NSN	3110-00-100-0370

COMPONENT DIAGRAM

KEY FEATURES

•

STYLE DESIGNATOR: NORMAL ANGLE

•

OUTSIDE DIAMETER: 3.3125 INCHES NOMINAL IN

•

BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN

•

STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2

•

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
OVERALL WIDTH	0.9375 INCHES NOMINAL IN
OUTSIDE DIAMETER	3.3125 INCHES NOMINAL IN
BACKFACE CORNER RADIUS	0.1250 INCHES NOMINAL IN
SPECIAL FEATURES	AXIAL DISTANCE BETWEEN CENTER OF CUP CONTACT LINE AND BEARING STABILITY POINT ON SHAFT AXIS 0.4300 IN. IN
STANDARD TOLERANCE DESIGNATION	AFBMA CLASS 2
MATERIAL	STEEL OVERALL

SUBSTITUTES & CROSS-REFERENCES 5

1000370Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

FF-B-187/1Reference document

Same NSN cross-reference

Reference document — Identification reference

3328Reference document

Same NSN cross-reference

Reference document — Secondary reference

ME114-2MSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

ME114-1Reference document

Same NSN cross-reference

Reference document — Secondary 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 FF-B-187/01-221?

FF-B-187/01-221 is a CUP,TAPERED ROLLER BEARING.

What parts can replace FF-B-187/01-221?

There are 5 known substitutes for FF-B-187/01-221: 1000370, FF-B-187/1, 3328 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for FF-B-187/01-221?

FF-B-187/01-221 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0370. This indicates validated use in U.S. government and defense supply chains.

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