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Technical Data Sheet
81491 ✓ Verified by PartsTable
Jumbo · 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 ROTOR ASSEMBLY,BRAKE is a Jumbo industrial component. Key specifications include frequency_rating: 14.0 KILOHERTZ NOMINAL SINGLE COMPONENT, winding_power_rating: 13500.0 WATTS SINGLE COMPONENT SINGLE SECONDARY, reliability_indicator: NOT ESTABLISHED, maximum_operating_temp: 55.0 CELSIUS DEGC, end_item_identification: DP STORAGE WINCH, MODEL 45TR 53808, 45,000 LB CACPACITY LBS, winding_operating_current: 450.0 AMPERES DC NOMINAL SINGLE COMPONENT SINGLE SECONDARY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3950-01-053-1332, 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
81491
NSN: 3950-01-053-1332
FSC: 3950
CAGE: 08302 — PACCAR WINCH INC DBA PACCAR WINCH DIVISION (USA)
SPECIFICATIONS
frequency_rating14.0 KILOHERTZ NOMINAL SINGLE COMPONENT
special_featuresOUTPUT VOLTAGE AND CURRENT IS AFTER RECTIFICATION; TURN RATIO: 14:1, SECONDARIES: (1) CENTER TAP AT 450 AMPS; MOUNTING: INSULATED PILLOW BLOCKS; TWO SHIELDS BETWEEN PRIMARY AND SECONDARY WITH LEADS
winding_power_rating13500.0 WATTS SINGLE COMPONENT SINGLE SECONDARY
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp55.0 CELSIUS DEGC
end_item_identificationDP STORAGE WINCH, MODEL 45TR 53808, 45,000 LB CACPACITY LBS
winding_operating_current450.0 AMPERES DC NOMINAL SINGLE COMPONENT SINGLE SECONDARY
winding_operating_voltage480.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
general_characteristics_item_descriptionSTEEL; 6.875 IN. OD,1.500 IN. ID,1.469 IN. W; GROOVE ON OD 1.156 IN. W 0.505 IN. DEEP; KEYWAY ON ID 1.062 IN. LG,0.377 IN. W,0.200 IN. DEEP IN
part_name_assigned_by_controlling_agencyBEARING,FLANGED
NSN3950-01-053-1332
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Jumbo ROTOR ASSEMBLY,BRAKE TITLE COMPONENT PN 81491 MFR Jumbo ROTOR ASSEMBLY,BRAKE
KEY FEATURES
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL; 6.875 IN. OD,1.500 IN. ID,1.469 IN. W; GROOVE ON OD 1.156 IN. W 0.505 IN. DEEP; KEYWAY ON ID 1.062 IN. LG,0.377 IN. W,0.200 IN. DEEP IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL; 6.875 IN. OD,1.500 IN. ID,1.469 IN. W; GROOVE ON OD 1.156 IN. W 0.505 IN. DEEP; KEYWAY ON ID 1.062 IN. LG,0.377 IN. W,0.200 IN. DEEP IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
81491Interchangeable
interchangeable cross-reference
interchangeable
X01M-3EP 1.25IN 81490Interchangeable
interchangeable cross-reference
interchangeable
81491DInterchangeable
interchangeable cross-reference
interchangeable
A1-50682-004SW-02 ITEM 5Interchangeable
interchangeable cross-reference
interchangeable
Y00015074Interchangeable
interchangeable cross-reference
interchangeable
2BW24Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81491?
81491 is a ROTOR ASSEMBLY,BRAKE manufactured by Jumbo.
What parts can replace 81491?
There are 6 known substitutes for 81491: 81491, X01M-3EP 1.25IN 81490, 81491D and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81491?
81491 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3950-01-053-1332. This indicates validated use in U.S. government and defense supply chains.
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