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National Stock Number:
3020-00-020-3920
Federal Supply Class:
3020
National Item Identification Number:
000203920
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:
| 3306-691 | 90073 | CMC ELECTRONICS INC |
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Techincal Specification:
| BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.0908 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.062 INCHES | | HUB NOMINAL DIAMETER | 0.185 INCHES SECOND END | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TY 303,COND A CANCELLED FED SPEC 1ST MATERIAL RESPONSE HUB | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-766,CL 302,COND A FED SPEC 2ND MATERIAL RESPONSE TEETH | | MATERIAL | STEEL COMP 303 HUB | | MATERIAL | STEEL TEETH | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.063 INCHES SECOND END | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.185 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.2920 INCHES | | PITCH DIAMETER | 1.2500 INCHES NOMINAL | | PRESSURE ANGLE | 14.5000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUBS | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 60 |
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