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National Stock Number:
3020-00-891-3757
Federal Supply Class:
3020
National Item Identification Number:
008913757
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:
| 10181794-2 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | AB350-90-2498M0DIFIED | 01351 | SOUTHERN GEAR & MACHINE INC |
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Techincal Specification:
| BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | BORE STYLE | PLAIN BOTH ENDS | | FACE NOMINAL WIDTH | 0.125 INCHES | | HUB NOMINAL DIAMETER | 0.563 INCHES FIRST END | | HUB STYLE DESIGNATOR | PINNED FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE HUB | | MATERIAL | ALUMINUM ALLOY 2024 FIRST GEAR | | MATERIAL | ALUMINUM ALLOY 2024 SECOND GEAR | | MATERIAL | STEEL COMP 303S HUB | | MATERIAL | STEEL SPRING | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.277 INCHES | | PITCH DIAMETER | 1.2500 INCHES NOMINAL | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE SECOND GEAR | | SURFACE TREATMENT | ANODIZE FIRST GEAR | | SURFACE TREATMENT | ANODIZE SECOND GEAR | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 90 | | TOOTH FORM | STANDARD |
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