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R18 — BEARING,BALL,ANNULAR

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

R18: BEARING,BALL,ANNULAR.

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 U.S.

Government catalog 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
NIINs: 001599185, 001899246, 001899247, 001899248, 001899249, 001899250, 001899251, 001899252, 001899253, 001899254, 001899255, 001899256, 001899257, 001899258, 001899259, 001899260, 001899261, 001899262, 001899263, 001899264, 001899265, 001899266, 001899267, 001899268, 001899269, 001899270, 001899271, 001899272, 001899273, 001899274, 001899275, 001899276, 001899277, 001899278, 001899279, 001899280, 001899281, 001899282, 001899283, 001899284, 001899285, 001899286, 001899287, 001899288, 001899290, 001899291, 001899292, 001899293, 001899294, 001899295, 001899296, 001899297, 001899298, 001899299, 001899300, 001899301, 001899302, 001899303, 001899304, 001899305, 002244026, 002244027, 002244028, 002244029, 002336425, 002364028, 002364029, 002622175, 002622176, 002622177, 002622178, 002669228, 002669229, 002669230, 002669243, 002669244, 002669245, 002669246, 002669247, 002669248, 003703247, 004675152, 005545611, 010415028, 011796796, 012844687
FSC: 3110 — Bearings, Antifriction, Unmounted
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
•
RETAINER FABRICATION METHOD: STAMPED
•
INTERNAL CLEARANCE: 0.0050 INCHES MAXIMUM AXIAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE BALL
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODSTAMPED
INTERNAL CLEARANCE0.0050 INCHES MAXIMUM AXIAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE BALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OUTER RING
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE INNER RING
OVERALL WIDTH0.3750 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER2.1250 INCHES NOMINAL IN
BORE SHAPESTRAIGHT
SUBSTITUTES & CROSS-REFERENCES 5
47-645-086-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
R18X1AReference document
Same NSN cross-reference
Reference document — Secondary reference
047-645-086-001Reference document
Same NSN cross-reference
Reference document — Secondary reference
S11RS848Reference document
Same NSN cross-reference
Reference document — Secondary reference
47-645-086Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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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.
What is the NSN for R18?
R18 is cataloged in the U.S. Government catalog under NSN 3110-00-159-9185. This indicates validated use in U.S. government and defense supply chains.
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U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.