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91188 — BUSHING,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

91188: BUSHING,SLEEVE.

The BUSHING,SLEEVE is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: CHEM BIO RESERVOIR 3LTR. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-591-8709, 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
91188
NSN: 3120-00-591-8709
NIINs: 005918709, 008985860, 010179978, 016802727
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 93235 — TURBODYNE DIV OF DRESSER INDUSTRIES INC SEE CODE 0BR59 (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyCHEM BIO RESERVOIR 3LTR
NSN3120-00-591-8709
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 91188 · 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
KEY FEATURES
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 1.2505 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
•
HARDNESS RATING: 58.0 ROCKWELL C MAXIMUM INSIDE DIAMETER SURFACE OF BODY
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
FEATURES PROVIDED: CASEHARDENED
•
BODY INSIDE DIAMETER: 0.7500 INCHES MINIMUM AND 0.7505 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER1.2505 INCHES MINIMUM AND 1.2510 INCHES MAXIMUM IN
HARDNESS RATING58.0 ROCKWELL C MAXIMUM INSIDE DIAMETER SURFACE OF BODY
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH0.5000 INCHES MINIMUM AND 0.5030 INCHES MAXIMUM IN
FEATURES PROVIDEDCASEHARDENED
BODY INSIDE DIAMETER0.7500 INCHES MINIMUM AND 0.7505 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
LA91188Reference document
Same NSN cross-reference
Reference document — Secondary reference
121301PC7-35Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
CS5918709Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91188?
91188 is a BUSHING,SLEEVE.
What parts can replace 91188?
There are 3 known substitutes for 91188: LA91188, 121301PC7-35, CS5918709. Substitute compatibility should be verified for your specific system.
What is the NSN for 91188?
91188 is cataloged in the U.S. Government catalog under NSN 3120-00-591-8709. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
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.