PartsTable
Technical Data Sheet
MS12AC ✓ 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

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 1.2500 INCHES NOMINAL IN, overall_width: 0.8750 INCHES NOMINAL IN, load_direction: RADIAL, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-8906, 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
MS12AC
NSN: 3110-00-155-8906
FSC: 3110
CAGE: 53035 — NSK CORP BEARING DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter1.2500 INCHES NOMINAL IN
overall_width0.8750 INCHES NOMINAL IN
load_directionRADIAL
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter3.1250 INCHES NOMINAL IN
internal_fit-up_designationSTANDARD
nondefinitive_spec/std_data115 TYPE AND 00 GRADE
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
NSN3110-00-155-8906
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MS12AC · 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: PRESSED
INTERNAL FIT-UP DESIGNATION: STANDARD
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
NONDEFINITIVE SPEC/STD DATA: 115 TYPE AND 00 GRADE
MATERIAL: STEEL OVERALL
LOAD DIRECTION: RADIAL
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY OVERALL OUTSIDE DIAMETER
TECHNICAL CHARACTERISTICS (FLIS)
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONSTANDARD
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
NONDEFINITIVE SPEC/STD DATA115 TYPE AND 00 GRADE
MATERIALSTEEL OVERALL
LOAD DIRECTIONRADIAL
MATERIALSTEEL OVERALL
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY OVERALL OUTSIDE DIAMETER
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
NONDEFINITIVE SPEC/STD DATA115 TYPE AND 00 GRADE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
IND1AMS42Interchangeable
interchangeable cross-reference
interchangeable
A-A-3068Interchangeable
interchangeable cross-reference
interchangeable
SS-S-736 TY2CLA1ST6Interchangeable
interchangeable cross-reference
interchangeable
305291942Interchangeable
interchangeable cross-reference
interchangeable
MS12Interchangeable
interchangeable cross-reference
interchangeable
FFB171Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS12AC?
MS12AC is a BEARING,BALL,ANNULAR.
What parts can replace MS12AC?
There are 7 known substitutes for MS12AC: IND1AMS42, A-A-3068, SS-S-736 TY2CLA1ST6 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS12AC?
MS12AC is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-155-8906. This indicates validated use in U.S. government and defense supply chains.
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