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Technical Data Sheet
PartsTable / COMPONENT / BRTAM2
BRTAM2 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

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: 4.4375 INCHES NOMINAL IN, special_features: AXIAL DISTANCE BETWEEN CENTER OF CUP CONTACT LINE AND BEARING STABILITY POINT ON SHAFT AXIS 0.2600 IN. IN, style_designator: NORMAL ANGLE, backface_corner_radius: 0.1250 INCHES NOMINAL IN.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-143-7586, 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
BRTAM2
NSN: 3110-00-143-7586
FSC: 3110
CAGE: 0MKW7 — MINNPAR, LLC DBA MINNPAR (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.9375 INCHES NOMINAL IN
outside_diameter4.4375 INCHES NOMINAL IN
special_featuresAXIAL DISTANCE BETWEEN CENTER OF CUP CONTACT LINE AND BEARING STABILITY POINT ON SHAFT AXIS 0.2600 IN. IN
style_designatorNORMAL ANGLE
backface_corner_radius0.1250 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-143-7586
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BRTAM2 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
OUTSIDE DIAMETER: 4.4375 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: NORMAL ANGLE
•
BACKFACE CORNER RADIUS: 0.1250 INCHES NOMINAL IN
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 (FLIS)
OVERALL WIDTH0.9375 INCHES NOMINAL IN
SPECIAL FEATURESAXIAL DISTANCE BETWEEN CENTER OF CUP CONTACT LINE AND BEARING STABILITY POINT ON SHAFT AXIS 0.2600 IN. IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
OUTSIDE DIAMETER4.4375 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORNORMAL ANGLE
BACKFACE CORNER RADIUS0.1250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
7617-4Interchangeable
interchangeable cross-reference
interchangeable
617-4Interchangeable
interchangeable cross-reference
interchangeable
1560OV1-156-1Interchangeable
interchangeable cross-reference
interchangeable
8357-1Interchangeable
interchangeable cross-reference
interchangeable
31-8357-1Interchangeable
interchangeable cross-reference
interchangeable
50118Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BRTAM2?
BRTAM2 is a CUP,TAPERED ROLLER BEARING.
What parts can replace BRTAM2?
There are 23 known substitutes for BRTAM2: 7617-4, 617-4, 1560OV1-156-1 and 20 more. Substitute compatibility should be verified for your specific system.
Is BRTAM2 still available?
BRTAM2 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026