PartsTable
Technical Data Sheet
PartsTable / COMPONENT / BS4-1657PC58
BS4-1657PC58 ✓ 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 OUTER RING, bore_shape: STRAIGHT, bore_diameter: 30.00 MILLIMETERS NOMINAL MM, contact_angle: 25.0 DEGREES MINIMUM, overall_width: 1.1875 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 3110-00-156-5445, 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
BS4-1657PC58
NSN: 3110-00-156-5445
FSC: 3110
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialSTEEL OUTER RING
bore_shapeSTRAIGHT
bore_diameter30.00 MILLIMETERS NOMINAL MM
contact_angle25.0 DEGREES MINIMUM
overall_width1.1875 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
style_designatorLOADING GROOVE, NON-SEPARABLE
overall_outside_diameter72.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
standard_tolerance_designationABEC NO.3
internal_fit-up_contact_angular_directionOUTWARD CONVERGENT
NSN3110-00-156-5445
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: BS4-1657PC58 · 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
•
MATERIAL: STEEL BALL
•
BORE DIAMETER: 30.00 MILLIMETERS NOMINAL MM
•
STYLE DESIGNATOR: LOADING GROOVE, NON-SEPARABLE
•
SURFACE FINISH: GROUND
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
INTERNAL FIT-UP CONTACT ANGULAR DIRECTION: OUTWARD CONVERGENT
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL BALL
MATERIALSTEEL INNER RING
BORE DIAMETER30.00 MILLIMETERS NOMINAL MM
STYLE DESIGNATORLOADING GROOVE, NON-SEPARABLE
MATERIALSTEEL OUTER RING
SURFACE FINISHGROUND
INTERNAL FIT-UP DESIGNATIONSTANDARD
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONOUTWARD CONVERGENT
BORE SHAPESTRAIGHT
CONTACT ANGLE25.0 DEGREES MINIMUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
5306MInterchangeable
interchangeable cross-reference
interchangeable
954394Interchangeable
interchangeable cross-reference
interchangeable
A-A-59641Interchangeable
interchangeable cross-reference
interchangeable
FS5606Interchangeable
interchangeable cross-reference
interchangeable
31-43516Interchangeable
interchangeable cross-reference
interchangeable
8434002P23Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BS4-1657PC58?
BS4-1657PC58 is a BEARING,BALL,ANNULAR.
What parts can replace BS4-1657PC58?
There are 33 known substitutes for BS4-1657PC58: 5306M, 954394, A-A-59641 and 30 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BS4-1657PC58?
BS4-1657PC58 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-156-5445. 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