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National Stock Number:
3020-00-547-0776
Federal Supply Class:
3020
National Item Identification Number:
005470776
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:
| 139C7937 | 05606 | GENERAL DYNAMICS-OTS, INC. | | A141-2-1 | 26420 | ASTRO GEAR AND INSTRUMENT CO INC | | SGM031694002 | 01351 | SOUTHERN GEAR & MACHINE INC |
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Techincal Specification:
| BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.300 INCHES | | HUB NOMINAL DIAMETER | 0.630 INCHES FIRST END | | HUB STYLE DESIGNATOR | PINNED FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB | | MATERIAL | ALUMINUM ALLOY 2024 BODY | | MATERIAL | STEEL COMP 303 HUB | | NOMINAL OUTSIDE DIAMETER | 2.499 INCHES | | NOMINAL OVERALL LENGTH | 0.640 INCHES | | PITCH DIAMETER | 2.2990 INCHES MINIMUM AND 2.3000 INCHES MAXIMUM | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | TEETH QUANTITY | 23 | | TOOTH FORM | STANDARD |
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