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National Stock Number:
3020-00-195-6027
Federal Supply Class:
3020
National Item Identification Number:
001956027
Description:
GEAR,ANTIBACKLASH,SPUR
Detail:
An item having one fixed gear and one free gear, both having the same complement of spur gear teeth, mounted on a common hub. The free gear is attached to the fixed gear by springs and operates as one gear. Upon installation with the mating gear, the teeth of the free moving gear are preset to mesh with teeth other than those of the fixed gear. This spring tension between the fixed gear and the free gear eliminates any free motion between the driver and the driven gear. The gear is used where identical and accurate transmitted motion between gears is required.
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Manufacturer Information:
| 0461C0024 | 54497 | MARTIN MARIETTA TECHNOLOGIES INC SUB OF MARTIN MARIETTA CORP AERO AND NAVAL SYSTEMS | | 0461C0024-2 | 01351 | SOUTHERN GEAR & MACHINE INC | | 0461C0024-2 | 02GJ5 | LOCKHEED MARTIN CORP | | 0461C0024-2 | 03538 | LOCKHEED MARTIN CORPORATION | | 0461C0024-2 | 54497 | MARTIN MARIETTA TECHNOLOGIES INC SUB OF MARTIN MARIETTA CORP AERO AND NAVAL SYSTEMS | | 04C1C0024-2 | 00141 | ROLLER BEARING CO OF AMERICA, INC | | ABP6-125-4270AL500HUB0D | 23266 | SECS, INC. | | P17-4-125 | 00141 | ROLLER BEARING CO OF AMERICA, INC |
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Techincal Specification:
| ATTACHMENT METHOD | MOUNTING HOLE | | BODY RECESS NOMINAL DEPTH | 0.031 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | FURNISHED ITEMS AND QUANTITY | 1 SETSCREW | | FACE NOMINAL WIDTH | 0.187 INCHES | | HUB NOMINAL DIAMETER | 0.500 INCHES FIRST END | | HUB STYLE DESIGNATOR | PINNED FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CLASS303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | MOUNTING HOLE NOMINAL THREAD SIZE | 0.138 INCHES TRANSVERSELY THROUGH HUB, FIRST END | | MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC TRANSVERSELY THROUGH HUB, FIRST END | | MOUNTING HOLE TYPE AND QUANTITY | 1 THREADED TRANSVERSELY THROUGH HUB, FIRST END | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.240 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 3.968 INCHES | | PITCH DIAMETER | 3.9052 INCHES MINIMUM AND 3.9062 INCHES MAXIMUM | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB, RECESSED BODY | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 125 | | TOOTH FORM | STANDARD |
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