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13037900 — BEARING UNIT,PLAIN

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

13037900: BEARING UNIT,PLAIN.

The BEARING UNIT,PLAIN is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 1.2513 INCHES NOMINAL IN, housing_length: 1.881 INCHES NOMINAL IN, flange_thickness: 0.339 INCHES NOMINAL IN, special_features: SEE DRAWING FOR FURTHER DETAILS, style_designator: FLANGE BLOCK. This part is cataloged in the U.S.

Government catalog under NSN 3130-01-646-2703, 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
13037900
NSN: 3130-01-646-2703
FSC: 3130 — Bearings, Mounted
CAGE: 19200 — COMBAT CAPABILITIES DEVELOPMENT COMMAND (CCDC) ARMAMENTS CENTER DBA CCDC DIV LOGISTICS RESEARCH AND ENGINEERING DIRECTORATE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter1.2513 INCHES NOMINAL IN
housing_length1.881 INCHES NOMINAL IN
flange_thickness0.339 INCHES NOMINAL IN
special_featuresSEE DRAWING FOR FURTHER DETAILS
style_designatorFLANGE BLOCK
bolt_circle_diameter4.125 INCHES NOMINAL IN
overall_outside_diameter4.870 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyFIXED RECOIL HOUSING
NSN3130-01-646-2703
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 13037900 · 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: 0.339 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLANGE BLOCK
•
OVERALL OUTSIDE DIAMETER: 4.870 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 4.125 INCHES NOMINAL IN
•
BORE DIAMETER: 1.2513 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FLANGE THICKNESS0.339 INCHES NOMINAL IN
STYLE DESIGNATORFLANGE BLOCK
OVERALL OUTSIDE DIAMETER4.870 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER4.125 INCHES NOMINAL IN
SPECIAL FEATURESSEE DRAWING FOR FURTHER DETAILS
PART NAME ASSIGNED BY CONTROLLING AGENCYFIXED RECOIL HOUSING
BORE DIAMETER1.2513 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOUSING LENGTH1.881 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: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 13037900?
13037900 is a BEARING UNIT,PLAIN.
What is the NSN for 13037900?
13037900 is cataloged in the U.S. Government catalog under NSN 3130-01-646-2703. 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.