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237903 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

237903: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY RETAINER, bore_shape: STRAIGHT, bore_diameter: 2.7556 INCHES MINIMUM AND 2.7759 INCHES MAXIMUM IN, surface_finish: GROUND, inner_ring_width: 1.1761 INCHES MINIMUM AND 1.1811 INCHES MAXIMUM IN, locating_feature: NONLOCATING. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-293-9192, 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
237903
NSN: 3110-00-293-9192
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialCOPPER ALLOY RETAINER
bore_shapeSTRAIGHT
bore_diameter2.7556 INCHES MINIMUM AND 2.7759 INCHES MAXIMUM IN
surface_finishGROUND
inner_ring_width1.1761 INCHES MINIMUM AND 1.1811 INCHES MAXIMUM IN
locating_featureNONLOCATING
outer_ring_width0.9761 INCHES MINIMUM AND 0.9811 INCHES MAXIMUM IN
special_featuresFLANGED OUTER RING 4.6100 IN. FLANGE OD 0.1260 IN. FLANGE WIDTH IN
style_designatorANGULAR CONTACT, SPHERICAL ROLLERS, SEPARABLE
internal_clearance0.0030 INCHES MINIMUM RADIAL AND 0.0045 INCHES MAXIMUM RADIAL IN
overall_outside_diameter4.3304 INCHES MINIMUM AND 4.3307 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
NSN3110-00-293-9192
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 237903 · 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
•
OUTER RING WIDTH: 0.9761 INCHES MINIMUM AND 0.9811 INCHES MAXIMUM IN
•
INTERNAL CLEARANCE: 0.0030 INCHES MINIMUM RADIAL AND 0.0045 INCHES MAXIMUM RADIAL IN
•
LOCATING FEATURE: NONLOCATING
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: ANGULAR CONTACT, SPHERICAL ROLLERS, SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 4.3304 INCHES MINIMUM AND 4.3307 INCHES MAXIMUM IN
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODMACHINED
OUTER RING WIDTH0.9761 INCHES MINIMUM AND 0.9811 INCHES MAXIMUM IN
INTERNAL CLEARANCE0.0030 INCHES MINIMUM RADIAL AND 0.0045 INCHES MAXIMUM RADIAL IN
LOCATING FEATURENONLOCATING
SURFACE FINISHGROUND
STYLE DESIGNATORANGULAR CONTACT, SPHERICAL ROLLERS, SEPARABLE
OVERALL OUTSIDE DIAMETER4.3304 INCHES MINIMUM AND 4.3307 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
SPECIAL FEATURESFLANGED OUTER RING 4.6100 IN. FLANGE OD 0.1260 IN. FLANGE WIDTH IN
STANDARD TOLERANCE DESIGNATIONRBEC NO.5
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 237903?
237903 is a BEARING,ROLLER,CYLINDRICAL.
What is the NSN for 237903?
237903 is cataloged in the U.S. Government catalog under NSN 3110-00-293-9192. This indicates validated use in U.S. government and defense supply chains.
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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.