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SF31 — SOCKET,PLUG-IN ELECTRONIC COMPON

✓ Government record, cited
— · BALL BEARING
PRODUCT OVERVIEW

SF31: SOCKET,PLUG-IN ELECTRONIC COMPON.

SOCKET,PLUG-IN ELECTRONIC COMPON. Key specifications include material: STEEL AND WOOL SEAL, seal_type: LABYRINTH, bore_diameter: 1.9375 INCHES NOMINAL IN, housing_width: 5.6250 INCHES NOMINAL IN, seal_location: BOTH ENDS, alignment_type: SELF-ALIGNING. This part is cataloged in the U.S.

Government catalog under NSN 3130-00-108-0586, 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
SF31
NSN: 3130-00-108-0586
FSC: 3130 — Bearings, Mounted
CAGE: 57448 — STEPHENS-ADAMSON INC A SUB OF ALLIS-CHALMERS CORP (USA)
SPECIFICATIONS
materialSTEEL AND WOOL SEAL
seal_typeLABYRINTH
bore_diameter1.9375 INCHES NOMINAL IN
housing_width5.6250 INCHES NOMINAL IN
seal_locationBOTH ENDS
alignment_typeSELF-ALIGNING
housing_length1.5625 INCHES NOMINAL IN
flange_thickness0.5625 INCHES NOMINAL IN
style_designatorFLANGE BLOCK
features_providedGROUND ROLLING ELEMENT GROOVE
mounting_hole_typeROUND, UNTHREADED
bolt_circle_diameter4.3750 INCHES NOMINAL IN
NSN3130-00-108-0586
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: SF31 · 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
•
SEAL TYPE: LABYRINTH
•
LUBRICATION MATERIAL: GREASE
•
LUBRICATION FITTING TYPE: HYDRAULIC
•
ASSEMBLY OVERALL LENGTH: 2.1562 INCHES NOMINAL IN
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
FLANGE THICKNESS: 0.5625 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: ROUND, UNTHREADED
•
ROTATING ELEMENT LOCKING METHOD: DIRECT
TECHNICAL CHARACTERISTICS
SEAL TYPELABYRINTH
LUBRICATION MATERIALGREASE
LUBRICATION FITTING TYPEHYDRAULIC
ASSEMBLY OVERALL LENGTH2.1562 INCHES NOMINAL IN
INTERNAL FIT-UP DESIGNATIONSTANDARD
FLANGE THICKNESS0.5625 INCHES NOMINAL IN
MOUNTING HOLE TYPEROUND, UNTHREADED
ROTATING ELEMENT LOCKING METHODDIRECT
SEAL LOCATIONBOTH ENDS
STYLE DESIGNATORFLANGE BLOCK
SUBSTITUTES & CROSS-REFERENCES 6
X4821Reference document
Same NSN cross-reference
Reference document — Secondary reference
SC4-1 15-16Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
F3U231HReference document
Same NSN cross-reference
Reference document — Replaced / superseded reference
FYN115Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
61J10905-79Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
350565Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SF31?
SF31 is a SOCKET,PLUG-IN ELECTRONIC COMPON.
What parts can replace SF31?
There are 6 known substitutes for SF31: X4821, SC4-1 15-16, F3U231H and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SF31?
SF31 is cataloged in the U.S. Government catalog under NSN 3130-00-108-0586. This indicates validated use in U.S. government and defense supply chains.
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