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National Stock Number:
3020-00-563-3816
Federal Supply Class:
3020
National Item Identification Number:
005633816
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:
| 8171669 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| BORE STYLE | W/ KEYWAY BOTH ENDS | | BORE NOMINAL DIAMETER | 0.240 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.250 INCHES | | HARDNESS RATING | 25.0 ROCKWELL C MINIMUM OVERALL | | HUB NOMINAL DIAMETER | 0.406 INCHES FIRST END | | HUB STYLE DESIGNATOR | PLAIN FIRST END | | KEYWAY NOMINAL WIDTH | 0.062 INCHES BOTH ENDS | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 416 OVERALL | | NOMINAL DISTANCE FROM BORE CENTER TO KEYWAY BOTTOM | 0.168 INCHES BOTH ENDS | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.156 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.217 INCHES | | NOMINAL OVERALL LENGTH | 0.406 INCHES | | PITCH DIAMETER | 1.1250 INCHES NOMINAL | | PRECISION CLASSIFICATION | QUALITY NUMBER 9 | | PRESSURE ANGLE | 14.5000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 27 | | TOOTH FORM | STANDARD |
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