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Technical Data Sheet
PartsTable / COMPONENT / R18
R18 ✓ 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 shape: STRAIGHT, length: 1.250 INCHES NOMINAL IN, diameter: 0.125 INCHES NOMINAL IN, material: TUNGSTEN CARBIDE, bore_shape: STRAIGHT, point_type: CONVENTIONAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-159-9185, 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
R18
NSN: 3110-00-159-9185
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
shapeSTRAIGHT
length1.250 INCHES NOMINAL IN
diameter0.125 INCHES NOMINAL IN
materialTUNGSTEN CARBIDE
bore_shapeSTRAIGHT
point_typeCONVENTIONAL
point_angle118.0 DEGREES NOMINAL
shank_styleSTRAIGHT ROUND
cam_quantity2
flute_length0.688 INCHES NOMINAL IN
bore_diameter1.1250 INCHES NOMINAL IN
overall_width0.3750 INCHES NOMINAL IN
NSN3110-00-159-9185
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: R18 · 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
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
•
RETAINER FABRICATION METHOD: STAMPED
•
MATERIAL: STEEL COMP E52100 INNER RING
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONABEC NO.1
RETAINER FABRICATION METHODSTAMPED
MATERIALSTEEL COMP E52100 INNER RING
STANDARD TOLERANCE DESIGNATIONABEC NO.1
MATERIALSTEEL COMP E52100 OUTER RING
BORE SHAPESTRAIGHT
MATERIALSTEEL RETAINER
MATERIALSTEEL COMP E52100 INNER RING
MATERIALSTEEL COMP E52100 BALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE BALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
47-645-086-1Interchangeable
Same NIIN cross-reference
interchangeable
R18X1AInterchangeable
Same NIIN cross-reference
interchangeable
047-645-086-001Interchangeable
Same NIIN cross-reference
interchangeable
S11RS848Interchangeable
Same NIIN cross-reference
interchangeable
47-645-086Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R18?
R18 is a BEARING,BALL,ANNULAR.
What parts can replace R18?
There are 5 known substitutes for R18: 47-645-086-1, R18X1A, 047-645-086-001 and 2 more. Substitute compatibility should be verified for your specific system.
Is R18 still available?
R18 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026