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Technical Data Sheet
PartsTable / COMPONENT / 3977 ITEM 7
3977 ITEM 7 ✓ 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 BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include phase: THREE SINGLE VOLTAGE, length: 30.000 INCHES NOMINAL IN, material: STEEL COMP 304 SHEATH, mask_type: HALF FACEPIECE, body_style: FINNED, TUBULAR, U SHAPED, body_width: 4.312 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-141-6199, 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
3977 ITEM 7
NSN: 3110-01-141-6199
FSC: 3110
CAGE: 06550 — INGERSOLL-RAND CO MATERIAL HANDLING DIV (USA)
SPECIFICATIONS
phaseTHREE SINGLE VOLTAGE
length30.000 INCHES NOMINAL IN
materialSTEEL COMP 304 SHEATH
mask_typeHALF FACEPIECE
body_styleFINNED, TUBULAR, U SHAPED
body_width4.312 INCHES NOMINAL IN
body_height4.500 INCHES NOMINAL IN
body_length5.250 INCHES NOMINAL IN
filter_typeCARTRIDGE AND FILTER PAD
head_harnessINCLUDED
adjustabilityADJUSTABLE
exhaust_valveINCLUDED
NSN3110-01-141-6199
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3977 ITEM 7 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
PA5418Interchangeable
interchangeable cross-reference
interchangeable
QQ-A-200/11Interchangeable
interchangeable cross-reference
interchangeable
16927Interchangeable
interchangeable cross-reference
interchangeable
50446Interchangeable
interchangeable cross-reference
interchangeable
2105203Interchangeable
interchangeable cross-reference
interchangeable
S4530Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3977 ITEM 7?
3977 ITEM 7 is a BEARING,BALL,ANNULAR.
What parts can replace 3977 ITEM 7?
There are 7 known substitutes for 3977 ITEM 7: PA5418, QQ-A-200/11, 16927 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3977 ITEM 7?
3977 ITEM 7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-141-6199. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026