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Technical Data Sheet
RB31440 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include body_style: PLAIN, SOLID, bore_style: W/ KEYWAY BOTH ENDS, teeth_quantity: 26, style_designator: PROTRUDING HUB, face_nominal_width: 2.125 INCHES IN, hub_nominal_diameter: 3.750 INCHES FIRST END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-355-2579, 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
RB31440
NSN: 3020-00-355-2579
FSC: 3020
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
body_stylePLAIN, SOLID
bore_styleW/ KEYWAY BOTH ENDS
teeth_quantity26
style_designatorPROTRUDING HUB
face_nominal_width2.125 INCHES IN
hub_nominal_diameter3.750 INCHES FIRST END IN
hub_style_designatorPLAIN FIRST END
keyway_nominal_width0.5000 INCHES BOTH ENDS IN
bore_nominal_diameter1.7500 INCHES BOTH ENDS IN
nominal_outside_diameter9.375 INCHES IN
nominal_distance_from_bore_center_to_keyway_bottom1.0625 INCHES BOTH ENDS IN
nominal_distance_between_body_face_and_protruding_hub_end1.375 INCHES FIRST END IN
NSN3020-00-355-2579
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GEAR,SPUR TITLE COMPONENT PN RB31440 MFR GEAR,SPUR
KEY FEATURES
TEETH QUANTITY: 26
BODY STYLE: PLAIN, SOLID
BORE NOMINAL DIAMETER: 1.7500 INCHES BOTH ENDS IN
HUB STYLE DESIGNATOR: PLAIN FIRST END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: 1.375 INCHES FIRST END IN
HUB NOMINAL DIAMETER: 3.750 INCHES FIRST END IN
FACE NOMINAL WIDTH: 2.125 INCHES IN
BORE STYLE: W/ KEYWAY BOTH ENDS
TECHNICAL CHARACTERISTICS (FLIS)
TEETH QUANTITY26
BODY STYLEPLAIN, SOLID
BORE NOMINAL DIAMETER1.7500 INCHES BOTH ENDS IN
HUB STYLE DESIGNATORPLAIN FIRST END
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END1.375 INCHES FIRST END IN
HUB NOMINAL DIAMETER3.750 INCHES FIRST END IN
FACE NOMINAL WIDTH2.125 INCHES IN
BORE STYLEW/ KEYWAY BOTH ENDS
NOMINAL OUTSIDE DIAMETER9.375 INCHES IN
KEYWAY NOMINAL WIDTH0.5000 INCHES BOTH ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
683RH-1/2-1/2SInterchangeable
interchangeable cross-reference
interchangeable
55257Interchangeable
interchangeable cross-reference
interchangeable
SF-16Interchangeable
interchangeable cross-reference
interchangeable
31440Interchangeable
interchangeable cross-reference
interchangeable
672-0129-00Interchangeable
interchangeable cross-reference
interchangeable
5502-11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RB31440?
RB31440 is a GEAR,SPUR.
What parts can replace RB31440?
There are 13 known substitutes for RB31440: 683RH-1/2-1/2S, 55257, SF-16 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for RB31440?
RB31440 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3020-00-355-2579. This indicates validated use in U.S. government and defense supply chains.
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