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National Stock Number:
3020-00-987-5465
Federal Supply Class:
3020
National Item Identification Number:
009875465
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:
| 548-8749-003 | 13499 | ROCKWELL COLLINS, INC. |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 2024 BODY | | ALUMINUM ALLOY 2024 HUB | | ALUMINUM ALLOY 2024 TEETH | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY | | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE HUB | | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE TEETH | | SURFACE TREATMENT | ANODIZE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | TEETH QUANTITY | 76 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUBS | | PITCH DIAMETER | 1.5833 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 1.625 INCHES | | FACE NOMINAL WIDTH | 0.250 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.187 INCHES FIRST END | | 0.062 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.190 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | 1 STEP FIRST END | | PLAIN SECOND END | | HUB NOMINAL DIAMETER | 0.312 INCHES SECOND END | | END NOMINAL LENGTH | 0.031 INCHES FIRST END | | END NOMINAL DIAMETER | 0.312 INCHES FIRST END | | FIRST STEP NOMINAL LENGTH | 0.156 INCHES FIRST END | | FIRST STEP NOMINAL DIAMETER | 0.500 INCHES FIRST END |
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