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157731FPC11 — HOUSING,BEARING UNIT

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

157731FPC11: HOUSING,BEARING UNIT.

The HOUSING,BEARING UNIT is a the manufacturer industrial component. Key specifications include material: IRON CAST HOUSING, bore_diameter: 3.5000 INCHES NOMINAL IN, housing_length: 2.6562 INCHES NOMINAL IN, shaft_end_type: OPEN, flange_thickness: 0.6250 INCHES NOMINAL IN, housing_diameter: 12.7187 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3130-01-026-0944, 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
157731FPC11
NSN: 3130-01-026-0944
FSC: 3130 — Bearings, Mounted
CAGE: 05340 — LIDGERWOOD MANUFACTURING COMPANY DBA LIDGERWOOD MANUFACTURING CO DIV LIDGERWOOD MANUFACURING CO (USA)
SPECIFICATIONS
materialIRON CAST HOUSING
bore_diameter3.5000 INCHES NOMINAL IN
housing_length2.6562 INCHES NOMINAL IN
shaft_end_typeOPEN
flange_thickness0.6250 INCHES NOMINAL IN
housing_diameter12.7187 INCHES NOMINAL IN
style_designatorFLANGE BLOCK
mounting_hole_typeROUND, UNTHREADED
bolt_circle_diameter11.6250 INCHES NOMINAL IN
mounting_hole_diameter0.3437 INCHES NOMINAL IN
material_document_and_classificationMIL-I-17166 MIL SPEC SINGLE MATERIAL RESPONSE HOUSING
NSN3130-01-026-0944
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 157731FPC11 · 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
•
FLANGE THICKNESS: 0.6250 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: ROUND, UNTHREADED
•
STYLE DESIGNATOR: FLANGE BLOCK
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-I-17166 MIL SPEC SINGLE MATERIAL RESPONSE HOUSING
•
MOUNTING HOLE DIAMETER: 0.3437 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 11.6250 INCHES NOMINAL IN
•
SHAFT END TYPE: OPEN
•
BORE DIAMETER: 3.5000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.6250 INCHES NOMINAL IN
MOUNTING HOLE TYPEROUND, UNTHREADED
STYLE DESIGNATORFLANGE BLOCK
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-I-17166 MIL SPEC SINGLE MATERIAL RESPONSE HOUSING
MOUNTING HOLE DIAMETER0.3437 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER11.6250 INCHES NOMINAL IN
SHAFT END TYPEOPEN
BORE DIAMETER3.5000 INCHES NOMINAL IN
MATERIALIRON CAST HOUSING
HOUSING LENGTH2.6562 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 1
157729-11Same 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 157731FPC11?
157731FPC11 is a HOUSING,BEARING UNIT.
What parts can replace 157731FPC11?
There is 1 known substitute for 157731FPC11: 157729-11. Substitute compatibility should be verified for your specific system.
What is the NSN for 157731FPC11?
157731FPC11 is cataloged in the U.S. Government catalog under NSN 3130-01-026-0944. 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.