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MS31997 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

MS31997: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL RETAINER, bore_shape: STRAIGHT, surface_finish: GROUND, locating_feature: NONLOCATING, special_features: OIL HOLE AND GROOVE IN INNER RING, internal_fit-up_designation: STANDARD. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-275-0169, 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
MS31997
NSN: 3110-00-275-0169
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 51600 — REGAL BELOIT AMERICA, INC. DBA ROLLWAY BEARING (USA)
SPECIFICATIONS
materialSTEEL RETAINER
bore_shapeSTRAIGHT
surface_finishGROUND
locating_featureNONLOCATING
special_featuresOIL HOLE AND GROOVE IN INNER RING
internal_fit-up_designationSTANDARD
retainer_fabrication_methodMACHINED
NSN3110-00-275-0169
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS31997 · 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
•
RETAINER FABRICATION METHOD: MACHINED
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LOCATING FEATURE: NONLOCATING
•
SURFACE FINISH: GROUND
•
BORE SHAPE: STRAIGHT
•
MATERIAL: STEEL INNER RING
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODMACHINED
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOCATING FEATURENONLOCATING
SURFACE FINISHGROUND
BORE SHAPESTRAIGHT
SPECIAL FEATURESOIL HOLE AND GROOVE IN INNER RING
MATERIALSTEEL INNER RING
MATERIALSTEEL RETAINER
MATERIALSTEEL ROLLER
SUBSTITUTES & CROSS-REFERENCES 3
SB2403-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS-5222-903Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
SB2403Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS31997?
MS31997 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace MS31997?
There are 3 known substitutes for MS31997: SB2403-1, MS-5222-903, SB2403. Substitute compatibility should be verified for your specific system.
What is the NSN for MS31997?
MS31997 is cataloged in the U.S. Government catalog under NSN 3110-00-275-0169. 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.