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288950 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

288950: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL OUTER RING, bore_shape: STRAIGHT, bore_diameter: 3.1504 INCHES NOMINAL IN, overall_width: 1.0236 INCHES NOMINAL IN, surface_finish: GROUND, locating_feature: ONE DIRECTION. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-104-8262, 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
288950
NSN: 3110-00-104-8262
NIINs: 001048262, 013016411
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 00198 — PRATT & WHITNEY CANADA CORP DIV PRATT & WHITNEY CANADA CORP. (CAN)
SPECIFICATIONS
materialSTEEL OUTER RING
bore_shapeSTRAIGHT
bore_diameter3.1504 INCHES NOMINAL IN
overall_width1.0236 INCHES NOMINAL IN
surface_finishGROUND
locating_featureONE DIRECTION
style_designatorSINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
internal_clearance0.0005 INCHES MINIMUM RADIAL AND 0.0025 INCHES MAXIMUM RADIAL IN
overall_outside_diameter5.5118 INCHES NOMINAL IN
standard_tolerance_designationRBEC NO.1
NSN3110-00-104-8262
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 288950 · 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
•
INTERNAL CLEARANCE: 0.0005 INCHES MINIMUM RADIAL AND 0.0025 INCHES MAXIMUM RADIAL IN
•
LOCATING FEATURE: ONE DIRECTION
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 5.5118 INCHES NOMINAL IN
•
BORE SHAPE: STRAIGHT
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
TECHNICAL CHARACTERISTICS
INTERNAL CLEARANCE0.0005 INCHES MINIMUM RADIAL AND 0.0025 INCHES MAXIMUM RADIAL IN
LOCATING FEATUREONE DIRECTION
SURFACE FINISHGROUND
STYLE DESIGNATORSINGLE ROW, ONE-DIRECTION LOCATING, TWO LIP INNER RING, ONE LIP OUTER RING, SEPARABLE
OVERALL WIDTH1.0236 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER5.5118 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
BORE DIAMETER3.1504 INCHES NOMINAL IN
MATERIALSTEEL OUTER RING
SUBSTITUTES & CROSS-REFERENCES 1
GTBS10883Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 288950?
288950 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 288950?
There is 1 known substitute for 288950: GTBS10883. Substitute compatibility should be verified for your specific system.
What is the NSN for 288950?
288950 is cataloged in the U.S. Government catalog under NSN 3110-00-104-8262. 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.