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Technical Data Sheet
PartsTable / COMPONENT / 1503A
1503A ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include frame_length: 55.000 INCHES NOMINAL IN, load_capacity: 2.000 TONS, special_features: MEYER MODEL F-4 EQUAL, hydraulic_lift_height: 4.250 INCHES MINIMUM AND 25.000 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-1856, 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
1503A
NSN: 3110-00-156-1856
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
frame_length55.000 INCHES NOMINAL IN
load_capacity2.000 TONS
special_featuresMEYER MODEL F-4 EQUAL
hydraulic_lift_height4.250 INCHES MINIMUM AND 25.000 INCHES MAXIMUM IN
NSN3110-00-156-1856
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 1503A · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
JS-1Interchangeable
interchangeable cross-reference
interchangeable
52771Interchangeable
interchangeable cross-reference
interchangeable
SN-42Interchangeable
interchangeable cross-reference
interchangeable
A-A-50695Interchangeable
interchangeable cross-reference
interchangeable
51413Interchangeable
interchangeable cross-reference
interchangeable
MIL-D-4562Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1503A?
1503A is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 1503A?
There are 23 known substitutes for 1503A: JS-1, 52771, SN-42 and 20 more. Substitute compatibility should be verified for your specific system.
Is 1503A still available?
1503A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026