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Technical Data Sheet
026091 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

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: 7.880 INCHES NOMINAL IN, diameter: 8.000 INCHES NOMINAL IN, material: ALUMINUM OVERALL, drive_type: DIRECT, air_flow_rate: 1050.000 CUBIC FEET PER MINUTE NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4140-00-171-1387, 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
026091
NSN: 4140-00-171-1387
FSC: 4140
CAGE: 82877 — ROTRON INCORPORATED (USA)
SPECIFICATIONS
phaseSINGLE
length7.880 INCHES NOMINAL IN
diameter8.000 INCHES NOMINAL IN
materialALUMINUM OVERALL
quantity1
drive_typeDIRECT
air_flow_rate1050.000 CUBIC FEET PER MINUTE NOMINAL
flow_directionINWARD
inclosure_typeFULLY INCLOSED
prime_mover_typeELECTRIC MOTOR
style_designatorFIXED
speed_adjustmentsSINGLE SPEED
NSN4140-00-171-1387
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FAN,CIRCULATING TITLE COMPONENT PN 026091 MFR FAN,CIRCULATING
KEY FEATURES
OPERATING SPEED AT RATED CAPACITY IN RPM: 3350.0
STATIC PRESSURE AT SPECIFIED AIR FLOW RATE: ERR-060
ROTATION DIRECTION FOR WHICH DESIGNED: CLOCKWISE
STYLE DESIGNATOR: FIXED
MOUNTING FACILITY TYPE AND QUANTITY: 1 FLANGE AND 8 UNTHREADED HOLE(S)
PRIME MOVER POWER RATING: 0.221 HORSEPOWER
PRIME MOVER DRIVE SHAFT BEARING TYPE: BALL
INCLOSURE TYPE: FULLY INCLOSED
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING SPEED AT RATED CAPACITY IN RPM3350.0
STATIC PRESSURE AT SPECIFIED AIR FLOW RATEERR-060
ROTATION DIRECTION FOR WHICH DESIGNEDCLOCKWISE
STYLE DESIGNATORFIXED
MOUNTING FACILITY TYPE AND QUANTITY1 FLANGE AND 8 UNTHREADED HOLE(S)
PRIME MOVER POWER RATING0.221 HORSEPOWER
PRIME MOVER DRIVE SHAFT BEARING TYPEBALL
INCLOSURE TYPEFULLY INCLOSED
PHASESINGLE
MOUNTING FACILITY TYPE AND QUANTITY1 FLANGE AND 8 UNTHREADED HOLE(S)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
4270013-0Interchangeable
interchangeable cross-reference
interchangeable
026090Interchangeable
interchangeable cross-reference
interchangeable
0177-91Interchangeable
interchangeable cross-reference
interchangeable
138C271H01Interchangeable
Same NIIN cross-reference
interchangeable
A0-74881Interchangeable
Same NIIN cross-reference
interchangeable
HFG-KS 803-R 413AFInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 026091?
026091 is a FAN,CIRCULATING.
What parts can replace 026091?
There are 8 known substitutes for 026091: 4270013-0, 026090, 0177-91 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 026091?
026091 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4140-00-171-1387. This indicates validated use in U.S. government and defense supply chains.
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