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Technical Data Sheet
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91263 — 91263

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

91263: 91263.

The 91263 is a the manufacturer industrial component. Key specifications include corner_shape: SQUARE ALL CORNERS, hole_diameter: 0.3906 INCHES NOMINAL FIRST IN, overall_length: 5.5000 INCHES NOMINAL IN, style_designator: SEGMENTED, PLAIN, NO OUTSIDE FLANGES, body_inside_diameter: 4.0080 INCHES MINIMUM AND 4.0110 INCHES MAXIMUM IN, body_outside_diameter: 4.8100 INCHES MINIMUM AND 4.8120 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3120-00-343-7701, 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
91263
NSN: 3120-00-343-7701
NIINs: 003437701, 005585645
FSC: 3120 — Bearings, Plain, Unmounted
CAGE: 26065 — PARMAC INC (USA)
SPECIFICATIONS
corner_shapeSQUARE ALL CORNERS
hole_diameter0.3906 INCHES NOMINAL FIRST IN
overall_length5.5000 INCHES NOMINAL IN
style_designatorSEGMENTED, PLAIN, NO OUTSIDE FLANGES
body_inside_diameter4.0080 INCHES MINIMUM AND 4.0110 INCHES MAXIMUM IN
body_outside_diameter4.8100 INCHES MINIMUM AND 4.8120 INCHES MAXIMUM IN
lubricant_accommodation_styleGROOVED DOUBLE LOOP
antirotation/lubrication_type_and_quantity5 HOLE
NSN3120-00-343-7701
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: 91263 · 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
•
CORNER SHAPE: SQUARE ALL CORNERS
•
BODY OUTSIDE DIAMETER: 4.8100 INCHES MINIMUM AND 4.8120 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SEGMENTED, PLAIN, NO OUTSIDE FLANGES
•
BODY INSIDE DIAMETER: 4.0080 INCHES MINIMUM AND 4.0110 INCHES MAXIMUM IN
•
LUBRICANT ACCOMMODATION STYLE: GROOVED DOUBLE LOOP
•
ANTIROTATION/LUBRICATION TYPE AND QUANTITY: 5 HOLE
TECHNICAL CHARACTERISTICS
CORNER SHAPESQUARE ALL CORNERS
BODY OUTSIDE DIAMETER4.8100 INCHES MINIMUM AND 4.8120 INCHES MAXIMUM IN
STYLE DESIGNATORSEGMENTED, PLAIN, NO OUTSIDE FLANGES
OVERALL LENGTH5.5000 INCHES NOMINAL IN
BODY INSIDE DIAMETER4.0080 INCHES MINIMUM AND 4.0110 INCHES MAXIMUM IN
LUBRICANT ACCOMMODATION STYLEGROOVED DOUBLE LOOP
SPECIAL FEATURES0.0938 IN. CUT BETWEEN UPPER AND LOWER HALVES,3 HOLES SPACED 1.1250 IN. 2.7500 IN. AND 4.3750 IN. FROM LEFT END IN TOP HALF,2 HOLES SPACES 1.1250 IN. FROM EACH END IN LOWER HALF,GROOVE IN TOP HALF ONLY IN
ANTIROTATION/LUBRICATION TYPE AND QUANTITY5 HOLE
HOLE DIAMETER0.3906 INCHES NOMINAL FIRST IN
SUBSTITUTES & CROSS-REFERENCES 4
91512PC13Reference document
Same NSN cross-reference
Reference document — Secondary reference
545118PC13Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
91511PC13Reference document
Same NSN cross-reference
Reference document — Secondary reference
545117PC13Same 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 91263?
91263 is a 91263.
What parts can replace 91263?
There are 4 known substitutes for 91263: 91512PC13, 545118PC13, 91511PC13 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91263?
91263 is cataloged in the U.S. Government catalog under NSN 3120-00-343-7701. This indicates validated use in U.S. government and defense supply chains.
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