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National Stock Number:
3020-00-568-8333
Federal Supply Class:
3020
National Item Identification Number:
005688333
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:
| 8172333 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| BACKLASH DESIGNATION | GRADE C | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.688 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.250 INCHES | | HARDNESS RATING | 20.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CLASS 6,TYPE A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | NOMINAL OUTSIDE DIAMETER | 3.331 INCHES | | PITCH DIAMETER | 3.2917 INCHES NOMINAL | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 OR QUALITY NUMBER 8 | | PRESSURE ANGLE | 14.5000 DEGREES | | STYLE DESIGNATOR | HUBLESS | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171,FINISH NO. 5.4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 158 | | TOOTH FORM | STANDARD |
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