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Technical Data Sheet
PartsTable / COMPONENT / MKP20A
MKP20A ✓ 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,AIRFRAME is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 INNER RING, bore_diameter: 1.2497 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN, load_direction: RADIAL, inner_ring_width: 0.4997 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN, outer_ring_width: 0.4330 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN, style_designator: SINGLE ROW INNER RING EXTENDED BOTH SIDES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-001-1938, 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
MKP20A
NSN: 3110-00-001-1938
FSC: 3110
CAGE: 21335 — TIMKEN CO DIV THE TIMKEN COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 INNER RING
bore_diameter1.2497 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
seal_quantity2
load_directionRADIAL
inner_ring_width0.4997 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
outer_ring_width0.4330 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN
style_designatorSINGLE ROW INNER RING EXTENDED BOTH SIDES
bearing_seal_typeCONTACT
surface_treatmentCADMIUM EXPOSED SURFACES AS MOUNTED
overall_outside_diameter2.2496 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM IN
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE BALL
lubrication_material_document_and_classificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
NSN3110-00-001-1938
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: MKP20A · 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
•
OVERALL OUTSIDE DIAMETER: 2.2496 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM IN
•
OUTER RING WIDTH: 0.4330 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN
•
BEARING SEAL TYPE: CONTACT
•
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
•
SEAL QUANTITY: 2
•
INNER RING WIDTH: 0.4997 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
•
LOAD DIRECTION: RADIAL
•
MATERIAL: RUBBER SYNTHETIC SEAL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER2.2496 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM IN
OUTER RING WIDTH0.4330 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN
BEARING SEAL TYPECONTACT
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
SEAL QUANTITY2
INNER RING WIDTH0.4997 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
LOAD DIRECTIONRADIAL
MATERIALRUBBER SYNTHETIC SEAL
MATERIALSTEEL COMP E52100 OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE BALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
MS27641-10Interchangeable
interchangeable cross-reference
interchangeable
AS27641Interchangeable
interchangeable cross-reference
interchangeable
561-6404325-31Interchangeable
interchangeable cross-reference
interchangeable
MS27641-12Interchangeable
interchangeable cross-reference
interchangeable
AS7949Interchangeable
interchangeable cross-reference
interchangeable
KP16AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MKP20A?
MKP20A is a BEARING,BALL,AIRFRAME.
What parts can replace MKP20A?
There are 25 known substitutes for MKP20A: MS27641-10, AS27641, 561-6404325-31 and 22 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MKP20A?
MKP20A is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-001-1938. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026