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Technical Data Sheet
PartsTable / COMPONENT / ER-27
ER-27 ✓ 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: 1.6875 INCHES NOMINAL IN, contact_angle: 120.0 DEGREES NOMINAL, overall_width: 1.9400 INCHES NOMINAL IN, load_direction: ANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-478-6248, 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
ER-27
NSN: 3110-01-478-6248
FSC: 3110
CAGE: 02695 — MORSE INDUSTRIAL CORP SEALMASTER BEARING DIV SUB OF EMERSON ELECTRIC CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter1.6875 INCHES NOMINAL IN
contact_angle120.0 DEGREES NOMINAL
overall_width1.9400 INCHES NOMINAL IN
seal_quantity2
load_directionANGULAR
surface_finishGROUND
style_designatorLOADING GROOVE, NON-SEPARABLE
bearing_seal_typeLIPS TURNED OUTWARDLY
lubrication_materialGREASE
overall_outside_diameter3.5960 INCHES NOMINAL IN
NSN3110-01-478-6248
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: ER-27 · 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: 3.5960 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
CONTACT ANGLE: 120.0 DEGREES NOMINAL
•
BEARING SEAL TYPE: LIPS TURNED OUTWARDLY
•
INTERNAL FIT-UP CONTACT ANGULAR DIRECTION: OUTWARD CONVERGENT
•
LUBRICATION MATERIAL: GREASE
•
SEAL QUANTITY: 2
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER3.5960 INCHES NOMINAL IN
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONSTANDARD
CONTACT ANGLE120.0 DEGREES NOMINAL
BEARING SEAL TYPELIPS TURNED OUTWARDLY
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONOUTWARD CONVERGENT
LUBRICATION MATERIALGREASE
SEAL QUANTITY2
BORE SHAPESTRAIGHT
LOAD DIRECTIONANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
SK70-1072Interchangeable
interchangeable cross-reference
interchangeable
70-1072Interchangeable
interchangeable cross-reference
interchangeable
79-6677Interchangeable
interchangeable cross-reference
interchangeable
70030-2Interchangeable
interchangeable cross-reference
interchangeable
70133-1Interchangeable
interchangeable cross-reference
interchangeable
BB5000Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ER-27?
ER-27 is a BEARING,BALL,ANNULAR.
What parts can replace ER-27?
There are 6 known substitutes for ER-27: SK70-1072, 70-1072, 79-6677 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ER-27?
ER-27 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-478-6248. 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