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Technical Data Sheet
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R350 — RACK,ELECTRICAL EQUIPMENT

✓ Government record, cited
3M · TAPERED BEARING
PRODUCT OVERVIEW

R350: RACK,ELECTRICAL EQUIPMENT.

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Government catalog under NSN 3110-00-155-7354, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
R350
NSN: 3110-00-155-7354
NIINs: 001557354, 002891768, 014889460
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 80038 — EQUITABLE BEARING CO INC (USA)
SPECIFICATIONS
phaseTHREE
materialALUMINUM
bore_shapeSTRAIGHT
total_head162.000 FEET FT
current_typeAC
bore_diameter50.0 MILLIMETERS NOMINAL MM
overall_width3.000 INCHES NOMINAL IN
pump_quantity1
cooling_methodSELF VENTILATED
inclosure_typeFULLY INCLOSED
overall_height19.000 INCHES NOMINAL IN
stage_quantity1
NSN3110-00-155-7354
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: R350 · 3M ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
LOCATING FEATURE: NONLOCATING
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 110.0 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
STANDARD TOLERANCE DESIGNATION: RBEC NO.1
TECHNICAL CHARACTERISTICS
INTERNAL FIT-UP DESIGNATIONSTANDARD
LOCATING FEATURENONLOCATING
SURFACE FINISHGROUND
STYLE DESIGNATORSINGLE ROW, NON-LOCATING, TWO LIP INNER RING, CYLINDRICAL OUTER RING, SEPARABLE
OVERALL WIDTH27.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER110.0 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
STANDARD TOLERANCE DESIGNATIONRBEC NO.1
BORE DIAMETER50.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OUTER RING
SUBSTITUTES & CROSS-REFERENCES 3
149543Reference document
Same NSN cross-reference
Reference document — Secondary reference
1209143Reference document
Same NSN cross-reference
Reference document — Secondary reference
BU1310ZReference document
Same NSN cross-reference
Reference document — Secondary reference
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 R350?
R350 is a RACK,ELECTRICAL EQUIPMENT manufactured by 3M.
What parts can replace R350?
There are 3 known substitutes for R350: 149543, 1209143, BU1310Z. Substitute compatibility should be verified for your specific system.
What is the NSN for R350?
R350 is cataloged in the U.S. Government catalog under NSN 3110-00-155-7354. This indicates validated use in U.S. government and defense supply chains.
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