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654128 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

654128: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 1.5746 INCHES MINIMUM AND 1.5748 INCHES MAXIMUM IN, surface_finish: GROUND, inner_ring_width: 0.8611 INCHES MINIMUM AND 0.8661 INCHES MAXIMUM IN, locating_feature: ONE DIRECTION. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-412-3446, 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
654128
NSN: 3110-00-412-3446
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter1.5746 INCHES MINIMUM AND 1.5748 INCHES MAXIMUM IN
surface_finishGROUND
inner_ring_width0.8611 INCHES MINIMUM AND 0.8661 INCHES MAXIMUM IN
locating_featureONE DIRECTION
outer_ring_width0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN
special_featuresSILVER PLATE CAGE PER AMS2412 ON LAND RIDING SURF AND ROLLER POCKETS 0.001-0.002 THK. BAKE AT 475-500 F FOR 2HRS TO CHECK FOR BOND
style_designatorSOLID INNER AND OUTER RACES
internal_clearance0.0020 INCHES MINIMUM RADIAL AND 0.0032 INCHES MAXIMUM RADIAL IN
overall_outside_diameter3.1780 INCHES MINIMUM AND 3.1800 INCHES MAXIMUM IN
retainer_fabrication_methodMACHINED
NSN3110-00-412-3446
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 654128 · 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: 0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN
•
INTERNAL CLEARANCE: 0.0020 INCHES MINIMUM RADIAL AND 0.0032 INCHES MAXIMUM RADIAL IN
•
LOCATING FEATURE: ONE DIRECTION
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SOLID INNER AND OUTER RACES
•
MATERIAL DOCUMENT AND CLASSIFICATION: PWA 725,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
OVERALL OUTSIDE DIAMETER: 3.1780 INCHES MINIMUM AND 3.1800 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODMACHINED
OUTER RING WIDTH0.7037 INCHES MINIMUM AND 0.7087 INCHES MAXIMUM IN
INTERNAL CLEARANCE0.0020 INCHES MINIMUM RADIAL AND 0.0032 INCHES MAXIMUM RADIAL IN
LOCATING FEATUREONE DIRECTION
SURFACE FINISHGROUND
STYLE DESIGNATORSOLID INNER AND OUTER RACES
MATERIAL DOCUMENT AND CLASSIFICATIONPWA 725,UNITED AIRCRAFT CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL
OVERALL OUTSIDE DIAMETER3.1780 INCHES MINIMUM AND 3.1800 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
SPECIAL FEATURESSILVER PLATE CAGE PER AMS2412 ON LAND RIDING SURF AND ROLLER POCKETS 0.001-0.002 THK. BAKE AT 475-500 F FOR 2HRS TO CHECK FOR BOND
SUBSTITUTES & CROSS-REFERENCES 2
654126Reference document
Same NSN cross-reference
Reference document — Secondary reference
656065Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 654128?
654128 is a BEARING,ROLLER,CYLINDRICAL.
What parts can replace 654128?
There are 2 known substitutes for 654128: 654126, 656065. Substitute compatibility should be verified for your specific system.
What is the NSN for 654128?
654128 is cataloged in the U.S. Government catalog under NSN 3110-00-412-3446. This indicates validated use in U.S. government and defense supply chains.
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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.