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Technical Data Sheet
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SR3 ✓ 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

RELAY-SOLENOID,ENGINE STARTER,EL. Key specifications include blade_size: NUMBER 3, blade_shape: CURVED DOWN, blade_width: 12.0 MILLIMETERS NOMINAL MM, blade_length: 55.0 MILLIMETERS NOMINAL MM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-157-1940, 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
SR3
NSN: 3110-00-157-1940
FSC: 3110
CAGE: 70854 — SCHAEFFLER AEROSPACE USA CORP DIV SCHAEFFLER AEROSPACE USA CORPORATION (USA)
SPECIFICATIONS
blade_sizeNUMBER 3
blade_shapeCURVED DOWN
blade_width12.0 MILLIMETERS NOMINAL MM
blade_length55.0 MILLIMETERS NOMINAL MM
blade_quantity1
NSN3110-00-157-1940
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: SR3 · 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
•
LOAD DIRECTION: RADIAL
•
BORE SHAPE: STRAIGHT
•
OVERALL OUTSIDE DIAMETER: 0.5000 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.5
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
TECHNICAL CHARACTERISTICS (FLIS)
LOAD DIRECTIONRADIAL
LOAD DIRECTIONRADIAL
BORE SHAPESTRAIGHT
OVERALL OUTSIDE DIAMETER0.5000 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING OVERALL
STANDARD TOLERANCE DESIGNATIONABEC NO.5
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL CORROSION RESISTING OVERALL
BORE DIAMETER0.1875 INCHES NOMINAL IN
OVERALL WIDTH0.1562 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 35
SFR6FFG2Interchangeable
interchangeable cross-reference
interchangeable
MIL-STD-1647Interchangeable
interchangeable cross-reference
interchangeable
M81793/08-LB1H2N1E1Interchangeable
interchangeable cross-reference
interchangeable
9811762Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-6085EInterchangeable
interchangeable cross-reference
interchangeable
BRAYC0885Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SR3?
SR3 is a RELAY-SOLENOID,ENGINE STARTER,EL.
What parts can replace SR3?
There are 35 known substitutes for SR3: SFR6FFG2, MIL-STD-1647, M81793/08-LB1H2N1E1 and 32 more. Substitute compatibility should be verified for your specific system.
Is SR3 still available?
SR3 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