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Technical Data Sheet
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BLS74.9 — BEARING UNIT,PLAIN

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

BLS74.9: BEARING UNIT,PLAIN.

The BEARING UNIT,PLAIN is a the manufacturer industrial component. Key specifications include special_features: REMARKS AND CIRCUIT SYMBOLS: U6A1A1A3; ASSEMBLY DRAWING: 92341026, part_name_assigned_by_controlling_agency: BEARING MOTOR. This part is cataloged in the U.S.

Government catalog under NSN 3130-01-671-4849, 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
BLS74.9
NSN: 3130-01-671-4849
FSC: 3130 — Bearings, Mounted
CAGE: S4348 — INFRANOR (CHE)
SPECIFICATIONS
special_featuresREMARKS AND CIRCUIT SYMBOLS: U6A1A1A3; ASSEMBLY DRAWING: 92341026
part_name_assigned_by_controlling_agencyBEARING MOTOR
NSN3130-01-671-4849
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: BLS74.9 · 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
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESREMARKS AND CIRCUIT SYMBOLS: U6A1A1A3; ASSEMBLY DRAWING: 92341026
PART NAME ASSIGNED BY CONTROLLING AGENCYBEARING MOTOR
OTHER ITEMS IN FSC 3130 — Bearings, Mounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3130-00-001-5118 3130-00-001-5137 3130-00-001-6585 3130-00-003-0422 3130-00-003-0455 3130-00-003-0794 3130-00-003-2802 3130-00-003-9535
SUBSTITUTES & CROSS-REFERENCES 1
BS0749.30.3105.K7Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 BLS74.9?
BLS74.9 is a BEARING UNIT,PLAIN.
What parts can replace BLS74.9?
There is 1 known substitute for BLS74.9: BS0749.30.3105.K7. Substitute compatibility should be verified for your specific system.
What is the NSN for BLS74.9?
BLS74.9 is cataloged in the U.S. Government catalog under NSN 3130-01-671-4849. 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.