PartsTable
Technical Data Sheet
Download PDF

104-2120 — HOUSING,BEARING UNIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

104-2120: HOUSING,BEARING UNIT.

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include special_features: USED ON VARIOUS CUMMINS GENERATION SYSTEMS, part_name_assigned_by_controlling_agency: BEARING-CRANKSHAFT9CASE ASSEMBLY). This part is cataloged in the U.S.

Government catalog under NSN 3130-01-675-4944, 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
104-2120
NSN: 3130-01-675-4944
FSC: 3130 — Bearings, Mounted
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
special_featuresUSED ON VARIOUS CUMMINS GENERATION SYSTEMS
part_name_assigned_by_controlling_agencyBEARING-CRANKSHAFT9CASE ASSEMBLY)
NSN3130-01-675-4944
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 104-2120 · 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 FEATURESUSED ON VARIOUS CUMMINS GENERATION SYSTEMS
PART NAME ASSIGNED BY CONTROLLING AGENCYBEARING-CRANKSHAFT9CASE ASSEMBLY)
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 104-2120?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 104-2120?
104-2120 is a HOUSING,BEARING UNIT.
What is the NSN for 104-2120?
104-2120 is cataloged in the U.S. Government catalog under NSN 3130-01-675-4944. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 104-2120

✓ 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.