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National Stock Number:
3020-00-073-9971
Federal Supply Class:
3020
National Item Identification Number:
000739971
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:
| 75-802985-1 | 04655 | GENERAL DYNAMICS MISSION SYSTEMS, INC. | | 75-802985-1 | 07397 | GENERAL DYNAMICS ADVANCED INFORMATION SYSTEMS INC. DBA GENERAL DYNAMICS ADVANCED INFORMATION SYSTEMS | | ABP6-90 | 23266 | SECS, INC. | | Z6L90 | 00328 | DESIGNATRONICS INCORPORATED |
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Techincal Specification:
| BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.188 INCHES | | HUB NOMINAL DIAMETER | 0.437 INCHES FIRST END | | HUB STYLE DESIGNATOR | PINNED FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763,CLASS303 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.402 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 2.784 INCHES | | PITCH DIAMETER | 2.8115 INCHES MINIMUM AND 2.8125 INCHES MAXIMUM | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 90 | | TOOTH FORM | STANDARD |
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