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678958-1 — BEARING BLANK,SLEEVE

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

678958-1: BEARING BLANK,SLEEVE.

The BEARING BLANK,SLEEVE is a the manufacturer industrial component. Key specifications include phase: THREE INPUT, duty_cycle: CONTINUOUS, body_length: 0.750 INCHES NOMINAL IN, power_rating: 75.000 HORSEPOWER OUTPUT, physical_form: LIQUID, rating_method: WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-451-2189, 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
678958-1
NSN: 3120-00-451-2189
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 63470 — C. CROUTHAMEL & CO., INC. (USA)
SPECIFICATIONS
phaseTHREE INPUT
duty_cycleCONTINUOUS
body_length0.750 INCHES NOMINAL IN
power_rating75.000 HORSEPOWER OUTPUT
physical_formLIQUID
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE PRIMARY
turn_quantity1 SINGLE COMPONENT SINGLE SECONDARY
coil_form_typeHOLLOW SINGLE COMPONENT
cooling_methodFAN COOLED
inclosure_typeOPEN
mounting_methodPEDESTAL
special_featuresMEETS OR EXCEEDS NEMA MG1 LATEST REVISION FOR ENERGY EFFICIENT GENERAL PURPOSE DUTY
NSN3120-00-451-2189
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 678958-1 · 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
SUBSTITUTES & CROSS-REFERENCES 4
C1119Reference document
Same NSN cross-reference
Reference document — Secondary reference
DM-846Reference document
Same NSN cross-reference
Reference document — Secondary reference
BP4812Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A416Reference 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 678958-1?
678958-1 is a BEARING BLANK,SLEEVE.
What parts can replace 678958-1?
There are 4 known substitutes for 678958-1: C1119, DM-846, BP4812 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 678958-1?
678958-1 is cataloged in the U.S. Government catalog under NSN 3120-00-451-2189. 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.