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National Stock Number:
3020-01-486-6739
Federal Supply Class:
3020
National Item Identification Number:
014866739
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:
| 1812858 | 03956 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 1981509 PC 16 | 03956 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 2024 FIRST GEAR | | STEEL COMP 303 HUB | | ALUMINUM ALLOY 2024 SECOND GEAR | | STEEL COMP 302 SPRING | | SURFACE TREATMENT | ANODIZE OVERALL | | TEETH QUANTITY | 130 | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 2.0313 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 2.063 INCHES | | FACE NOMINAL WIDTH | 0.104 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.325 INCHES FIRST END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | PLAIN FIRST END | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | SPECIAL FEATURES | MODIFIED FROM STERLING INSTRUMENT P/N S9706A-Z7E130AP WITH PRELOAD AT 6 TEETH AND .0634 DIA. HOLE AND BORE AS SPECIFIED | | PART NAME ASSIGNED BY CONTROLLING AGENCY | GEAR,ANTI-BACKLASH, 130 TEETH |
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