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S543ZA — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

S543ZA: BEARING,BALL,ANNULAR.

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 440C INNER RING, bore_shape: STRAIGHT, bore_diameter: 1.5625 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND, inner_ring_width: 0.2812 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-01-227-4101, 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
S543ZA
NSN: 3110-01-227-4101
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 70854 — SCHAEFFLER AEROSPACE USA CORP DIV SCHAEFFLER AEROSPACE USA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 440C INNER RING
bore_shapeSTRAIGHT
bore_diameter1.5625 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
inner_ring_width0.2812 INCHES NOMINAL IN
outer_ring_width0.2500 INCHES NOMINAL IN
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
lubrication_materialOIL LUBRICATING
functional_descriptionTORQUE TUBE PRECISION INSTRUMENT APPL
overall_outside_diameter2.0000 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
NSN3110-01-227-4101
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: S543ZA · 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: MOLDED
•
LUBRICATION MATERIAL: OIL LUBRICATING
•
OUTER RING WIDTH: 0.2500 INCHES NOMINAL IN
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 2.0000 INCHES NOMINAL IN
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODMOLDED
LUBRICATION MATERIALOIL LUBRICATING
OUTER RING WIDTH0.2500 INCHES NOMINAL IN
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL OUTSIDE DIAMETER2.0000 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
FUNCTIONAL DESCRIPTIONTORQUE TUBE PRECISION INSTRUMENT APPL
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 S543ZA?
S543ZA is a BEARING,BALL,ANNULAR.
What is the NSN for S543ZA?
S543ZA is cataloged in the U.S. Government catalog under NSN 3110-01-227-4101. 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.