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Technical Data Sheet
PartsTable / COMPONENT / 1131787-8
1131787-8 ✓ 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 MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include end_type: DOUBLE SETSCREW FIRST END, material: STEEL, seal_type: LABYRINTH, base_style: MEDIUM TWO PIN, block_type: FIXED, body_width: 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-375-2877, 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
1131787-8
NSN: 3120-00-375-2877
FSC: 3120
CAGE: 23667 — SMITHS DETECTION INC. DBA SMITHS DETECTION INC CASC (USA)
SPECIFICATIONS
end_typeDOUBLE SETSCREW FIRST END
materialSTEEL
seal_typeLABYRINTH
base_styleMEDIUM TWO PIN
block_typeFIXED
body_width0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
bore_shapeSTRAIGHT
bulb_styleT ("U" SHAPED TUBULAR)
base_length3.1250 INCHES NOMINAL IN
body_height0.140 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
body_length0.755 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
bore_diameter2.1875 INCHES NOMINAL IN
NSN3120-00-375-2877
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 1131787-8 · 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 20
20405Interchangeable
interchangeable cross-reference
interchangeable
R147PC7Interchangeable
interchangeable cross-reference
interchangeable
7405WInterchangeable
interchangeable cross-reference
interchangeable
20401Interchangeable
interchangeable cross-reference
interchangeable
9020401Interchangeable
interchangeable cross-reference
interchangeable
9607Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1131787-8?
1131787-8 is a MICROCIRCUIT,DIGITAL.
What parts can replace 1131787-8?
There are 20 known substitutes for 1131787-8: 20405, R147PC7, 7405W and 17 more. Substitute compatibility should be verified for your specific system.
Is 1131787-8 still available?
1131787-8 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