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8253250 — HOUSING,BEARING UNIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

8253250: HOUSING,BEARING UNIT.

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 2.7000 INCHES NOMINAL IN, housing_width: 4.0000 INCHES NOMINAL IN, housing_height: 5.5000 INCHES NOMINAL IN, housing_length: 4.6250 INCHES NOMINAL IN, shaft_end_type: OPEN. This part is cataloged in the U.S.

Government catalog under NSN 3130-00-400-6844, 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
8253250
NSN: 3130-00-400-6844
FSC: 3130 — Bearings, Mounted
CAGE: 39VG9 — PROGRESS RAIL LOCOMOTIVE INC. DBA PROGRESS RAIL SWITCHING SERVICES LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter2.7000 INCHES NOMINAL IN
housing_width4.0000 INCHES NOMINAL IN
housing_height5.5000 INCHES NOMINAL IN
housing_length4.6250 INCHES NOMINAL IN
shaft_end_typeOPEN
special_features3 MOUNTING HOLES 0.5000 IN. DIA,5 MOUNTING HOLES 0.4375 IN. DIA IN
mounting_hole_typeROUND, UNTHREADED
mounting_hole_diameter0.5000 INCHES NOMINAL IN
end_item_identificationLOGISTGICS SUPPORT VESSEL
height_from_bottom_of_base_to_bore_centerline3.0000 INCHES NOMINAL IN
NSN3130-00-400-6844
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 8253250 · 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
•
HOUSING HEIGHT: 5.5000 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: ROUND, UNTHREADED
•
MOUNTING HOLE DIAMETER: 0.5000 INCHES NOMINAL IN
•
HOUSING WIDTH: 4.0000 INCHES NOMINAL IN
•
SHAFT END TYPE: OPEN
•
BORE DIAMETER: 2.7000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HOUSING HEIGHT5.5000 INCHES NOMINAL IN
MOUNTING HOLE TYPEROUND, UNTHREADED
MOUNTING HOLE DIAMETER0.5000 INCHES NOMINAL IN
HOUSING WIDTH4.0000 INCHES NOMINAL IN
SHAFT END TYPEOPEN
SPECIAL FEATURES3 MOUNTING HOLES 0.5000 IN. DIA,5 MOUNTING HOLES 0.4375 IN. DIA IN
END ITEM IDENTIFICATIONLOGISTGICS SUPPORT VESSEL
BORE DIAMETER2.7000 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOUSING LENGTH4.6250 INCHES NOMINAL IN
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8253250?
8253250 is a HOUSING,BEARING UNIT.
What is the NSN for 8253250?
8253250 is cataloged in the U.S. Government catalog under NSN 3130-00-400-6844. 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.