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538623 — BEARING,ROLLER,CYLINDRICAL

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

538623: BEARING,ROLLER,CYLINDRICAL.

The BEARING,ROLLER,CYLINDRICAL is a the manufacturer industrial component. Key specifications include material: STEEL INNER RING, bore_shape: STRAIGHT, bore_diameter: 2.5588 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN, overall_width: 1.0186 INCHES MINIMUM AND 1.0236 INCHES MAXIMUM IN, surface_finish: GROUND, locating_feature: NONLOCATING. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-075-2227, 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
538623
NSN: 3110-00-075-2227
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL INNER RING
bore_shapeSTRAIGHT
bore_diameter2.5588 INCHES MINIMUM AND 2.5591 INCHES MAXIMUM IN
overall_width1.0186 INCHES MINIMUM AND 1.0236 INCHES MAXIMUM IN
surface_finishGROUND
locating_featureNONLOCATING
special_featuresDIA OF INNER RING IS 0.9477 IN. MIN 0.9487 IN. MAX;SILVER PLATE CAGE 0.001-0.002 IN. THK PER AMS 2412 ON LAND RIDING SURF AND ROLLER POCKETS,BAKE AT 475-500F FOR 2HRS TO CHECK FOR BOND IN
style_designatorSINGLE ROW, ONE-DIRECTION LOCATING, ONE LIP INNER RING, TWO LIP OUTER RING, ROLLER RETAINMENT RING ON INNER RING, NON-SEPARABLE
internal_clearance0.0028 INCHES MINIMUM RADIAL AND 0.0038 INCHES MAXIMUM RADIAL IN
end_item_identificationACFT ENG TF-30
overall_outside_diameter3.9367 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN
standard_tolerance_designationRBEC NO.5
NSN3110-00-075-2227
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 538623 · 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: 0.0028 INCHES MINIMUM RADIAL AND 0.0038 INCHES MAXIMUM RADIAL IN
•
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
•
MATERIAL DOCUMENT AND CLASSIFICATION: PWA 725,97497 MFR REF 1ST MATERIAL RESPONSE OUTER RING
TECHNICAL CHARACTERISTICS
INTERNAL CLEARANCE0.0028 INCHES MINIMUM RADIAL AND 0.0038 INCHES MAXIMUM RADIAL IN
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
MATERIAL DOCUMENT AND CLASSIFICATIONPWA 725,97497 MFR REF 1ST MATERIAL RESPONSE OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATIONPWA 725,97497 MFR REF 2ND MATERIAL RESPONSE INNER RING
MATERIAL DOCUMENT AND CLASSIFICATIONPWA 725,97497 MFR REF 3RD MATERIAL RESPONSE ROLLER
OVERALL WIDTH1.0186 INCHES MINIMUM AND 1.0236 INCHES MAXIMUM IN
OVERALL OUTSIDE DIAMETER3.9367 INCHES MINIMUM AND 3.9370 INCHES MAXIMUM IN
BORE SHAPESTRAIGHT
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 538623?
538623 is a BEARING,ROLLER,CYLINDRICAL.
What is the NSN for 538623?
538623 is cataloged in the U.S. Government catalog under NSN 3110-00-075-2227. This indicates validated use in U.S. government and defense supply chains.
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