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325-1977 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

325-1977: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 4.3299 INCHES MINIMUM AND 4.3307 INCHES MAXIMUM IN, overall_width: 0.7794 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN, surface_finish: GROUND, locating_feature: NONLOCATING. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-171-4674, 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
325-1977
NSN: 3110-01-171-4674
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 19382 — REXNORD INDUSTRIES, LLC DIV LINK-BELT BEARING OPERATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter4.3299 INCHES MINIMUM AND 4.3307 INCHES MAXIMUM IN
overall_width0.7794 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN
surface_finishGROUND
locating_featureNONLOCATING
style_designatorSINGLE ROW, ONE-DIRECTION LOCATING, ONE LIP INNER RING, TWO LIP OUTER RING, ROLLER RETAINMENT RING ON INNER RING, NON-SEPARABLE
overall_outside_diameter5.9050 INCHES MINIMUM AND 5.9058 INCHES MAXIMUM IN
NSN3110-01-171-4674
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 325-1977 · 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
•
LOCATING FEATURE: NONLOCATING
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SINGLE ROW, ONE-DIRECTION LOCATING, ONE LIP INNER RING, TWO LIP OUTER RING, ROLLER RETAINMENT RING ON INNER RING, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 5.9050 INCHES MINIMUM AND 5.9058 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
•
BORE DIAMETER: 4.3299 INCHES MINIMUM AND 4.3307 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
LOCATING FEATURENONLOCATING
SURFACE FINISHGROUND
STYLE DESIGNATORSINGLE ROW, ONE-DIRECTION LOCATING, ONE LIP INNER RING, TWO LIP OUTER RING, ROLLER RETAINMENT RING ON INNER RING, NON-SEPARABLE
OVERALL WIDTH0.7794 INCHES MINIMUM AND 0.7874 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER5.9050 INCHES MINIMUM AND 5.9058 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
BORE DIAMETER4.3299 INCHES MINIMUM AND 4.3307 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 1
11629839Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 325-1977?
325-1977 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 325-1977?
There is 1 known substitute for 325-1977: 11629839. Substitute compatibility should be verified for your specific system.
What is the NSN for 325-1977?
325-1977 is cataloged in the U.S. Government catalog under NSN 3110-01-171-4674. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.