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Technical Data Sheet
PartsTable / COMPONENT / SM-B-187806
SM-B-187806 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The BEARING,SLEEVE is a the manufacturer industrial component. Key specifications include width: 0.521 INCHES NOMINAL IN, length: 1.217 INCHES NOMINAL IN, material: COPPER ALLOY BOARD, tip_type: PHILLIPS CROSS, thickness: 0.374 INCHES NOMINAL IN, top_style: FLAT WITH RIGHT EDGE BEVELED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-652-8940, 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
SM-B-187806
NSN: 3120-00-652-8940
FSC: 3120
CAGE: 04YE2 — VALCORE MANUFACTURING LLC (USA)
SPECIFICATIONS
width0.521 INCHES NOMINAL IN
length1.217 INCHES NOMINAL IN
materialCOPPER ALLOY BOARD
tip_typePHILLIPS CROSS
thickness0.374 INCHES NOMINAL IN
top_styleFLAT WITH RIGHT EDGE BEVELED
body_styleBARRIER TYPE
head_styleFLAT CHAMFER
bevel_depth0.090 INCHES NOMINAL IN
head_height0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
bevel_length0.125 INCHES NOMINAL IN
power_rating2.0 WATTS AVERAGE AND 2.0 KILOWATTS PEAK
NSN3120-00-652-8940
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SM-B-187806 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
600-2-2Interchangeable
interchangeable cross-reference
interchangeable
2994574-19Interchangeable
interchangeable cross-reference
interchangeable
439A866G08Interchangeable
interchangeable cross-reference
interchangeable
S439A866G08Interchangeable
interchangeable cross-reference
interchangeable
11640Interchangeable
interchangeable cross-reference
interchangeable
40540Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM-B-187806?
SM-B-187806 is a BEARING,SLEEVE.
What parts can replace SM-B-187806?
There are 19 known substitutes for SM-B-187806: 600-2-2, 2994574-19, 439A866G08 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-187806?
SM-B-187806 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-652-8940. 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