83-634778-00 — FAN,CIRCULATING

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

83-634778-00: FAN,CIRCULATING.

The FAN,CIRCULATING is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include phase: SINGLE, length: 3.500 INCHES NOMINAL IN, material: ALUMINUM ALLOY OR STEEL BLADE, drive_type: DIRECT, air_flow_rate: 110.0 CUBIC FEET PER MINUTE NOMINAL, flow_direction: OUTWARD. This part is cataloged in the U.S.

Government catalog under NSN 4140-00-643-3744, 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

83-634778-00

NSN: 4140-00-643-3744
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
CAGE: 88818 — KEARFOTT CORPORATION DIV GUIDANCE AND NAVIGATION DIVISION (USA)

SPECIFICATIONS

phase	SINGLE
length	3.500 INCHES NOMINAL IN
material	ALUMINUM ALLOY OR STEEL BLADE
drive_type	DIRECT
air_flow_rate	110.0 CUBIC FEET PER MINUTE NOMINAL
flow_direction	OUTWARD
inclosure_type	PARTIALLY INCLOSED
prime_mover_type	ELECTRIC MOTOR
special_features	MTG HOLES IN END OF MOTOR SHELL BEHIND IMPELLER LIMITED TO 0.156 IN. MAX LG OF MTG SCREW ENGAGEMENT IN
style_designator	FIXED
speed_adjustments	SINGLE SPEED
frequency_in_hertz	60.0
NSN	4140-00-643-3744

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY TYPE AND QUANTITY: 3 THREADED HOLE(S)

•

SPEED ADJUSTMENTS: SINGLE SPEED

•

PHASE: SINGLE

•

FREQUENCY IN HERTZ: 60.0

•

INCLOSURE TYPE: PARTIALLY INCLOSED

•

LENGTH: 3.500 INCHES NOMINAL IN

•

VOLTAGE IN VOLTS AND CURRENT TYPE: 115.0 AC

•

FLOW DIRECTION: OUTWARD

TYPICAL APPLICATIONS

Server thermal management and cooling
Hot-swap fan replacement in production environments
Redundant cooling for high-availability systems

TECHNICAL CHARACTERISTICS

MOUNTING FACILITY TYPE AND QUANTITY	3 THREADED HOLE(S)
SPEED ADJUSTMENTS	SINGLE SPEED
PHASE	SINGLE
FREQUENCY IN HERTZ	60.0
INCLOSURE TYPE	PARTIALLY INCLOSED
LENGTH	3.500 INCHES NOMINAL IN
VOLTAGE IN VOLTS AND CURRENT TYPE	115.0 AC
FLOW DIRECTION	OUTWARD
DRIVE TYPE	DIRECT
PRIME MOVER POWER RATING	0.050 HORSEPOWER

OTHER ITEMS IN FSC 4140 — Fans, Air Circulators, and Blower Equipment

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4140-00-000-0082 4140-00-001-1517 4140-00-001-1536 4140-00-001-1537 4140-00-001-3930 4140-00-001-6464 4140-00-001-6874 4140-00-001-6875

SUBSTITUTES & CROSS-REFERENCES 2

83-634778-01Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

83-634778-00REV HReference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

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 83-634778-00?

83-634778-00 is a FAN,CIRCULATING.

What parts can replace 83-634778-00?

There are 2 known substitutes for 83-634778-00: 83-634778-01, 83-634778-00REV H. Substitute compatibility should be verified for your specific system.

What is the NSN for 83-634778-00?

83-634778-00 is cataloged in the U.S. Government catalog under NSN 4140-00-643-3744. This indicates validated use in U.S. government and defense supply chains.

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83-634778-00 — FAN,CIRCULATING

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