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National Stock Number:
3020-00-891-1852
Federal Supply Class:
3020
National Item Identification Number:
008911852
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:
| SM-C-413924 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| MATERIAL | STEEL COMP 303 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | TEETH QUANTITY | 66 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUBS | | PITCH DIAMETER | 1.3750 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 1.417 INCHES | | FACE NOMINAL WIDTH | 0.088 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.496 INCHES FIRST END | | 0.148 INCHES SECOND END | | HUB STYLE DESIGNATOR | 2 STEPS FIRST END | | PLAIN SECOND END | | HUB NOMINAL DIAMETER | 0.187 INCHES SECOND END | | END NOMINAL LENGTH | 0.259 INCHES FIRST END | | END NOMINAL DIAMETER | 0.187 INCHES FIRST END | | FIRST STEP NOMINAL LENGTH | 0.075 INCHES FIRST END | | FIRST STEP NOMINAL DIAMETER | 0.218 INCHES FIRST END | | SECOND STEP NOMINAL LENGTH | 0.050 INCHES FIRST END | | SECOND STEP NOMINAL DIAMETER | 0.225 INCHES FIRST END |
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