PartsTable
Technical Data Sheet
C31-21638 ✓ 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,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 0.7500 INCHES NOMINAL IN, overall_width: 0.5000 INCHES NOMINAL IN, alignment_type: RIGID, surface_finish: GROUND, special_features: EXTRA CAPACITY OUTER RACE; OIL HOLE IN OUTER RACE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-227-4428, 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
C31-21638
NSN: 3110-00-227-4428
FSC: 3110
CAGE: 88907 — BRUNSWICK CORP DBA MERCURY MARINE DIV MERCURY MARINE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter0.7500 INCHES NOMINAL IN
overall_width0.5000 INCHES NOMINAL IN
alignment_typeRIGID
surface_finishGROUND
special_featuresEXTRA CAPACITY OUTER RACE; OIL HOLE IN OUTER RACE
style_designatorNON-SEPARABLE, OPEN END, DRAWN SHELL
overall_outside_diameter1.0000 INCHES NOMINAL IN
retainer_fabrication_methodPRESSED
standard_tolerance_designationAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
NSN3110-00-227-4428
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: C31-21638 · 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
BORE DIAMETER: 0.7500 INCHES NOMINAL IN
SURFACE FINISH: GROUND
RETAINER FABRICATION METHOD: PRESSED
OVERALL OUTSIDE DIAMETER: 1.0000 INCHES NOMINAL IN
ALIGNMENT TYPE: RIGID
MATERIAL: STEEL OVERALL
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
TECHNICAL CHARACTERISTICS (FLIS)
BORE DIAMETER0.7500 INCHES NOMINAL IN
SURFACE FINISHGROUND
RETAINER FABRICATION METHODPRESSED
OVERALL OUTSIDE DIAMETER1.0000 INCHES NOMINAL IN
ALIGNMENT TYPERIGID
OVERALL WIDTH0.5000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
STYLE DESIGNATORNON-SEPARABLE, OPEN END, DRAWN SHELL
SPECIAL FEATURESEXTRA CAPACITY OUTER RACE; OIL HOLE IN OUTER RACE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
052643Interchangeable
interchangeable cross-reference
interchangeable
1134-7Interchangeable
interchangeable cross-reference
interchangeable
12Z10023-10Interchangeable
interchangeable cross-reference
interchangeable
B1280HInterchangeable
Same NIIN cross-reference
interchangeable
3110002274428Interchangeable
Same NIIN cross-reference
interchangeable
N124PC22Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C31-21638?
C31-21638 is a BEARING,ROLLER,NEEDLE.
What parts can replace C31-21638?
There are 9 known substitutes for C31-21638: 052643, 1134-7, 12Z10023-10 and 6 more. Substitute compatibility should be verified for your specific system.
Is C31-21638 still available?
C31-21638 is currently cancelled.
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