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National Stock Number:
3020-00-485-6156
Federal Supply Class:
3020
National Item Identification Number:
004856156
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:
| 680845-0001 | 06481 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 680845-1 | 06481 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| ATTACHMENT METHOD | CLAMP | | BORE NOMINAL DIAMETER | 0.1202 INCHES BOTH ENDS | | BORE STYLE | PLAIN BOTH ENDS | | CLAMPING SURFACE NOMINAL LENGTH | 0.140 INCHES FIRST END | | END NOMINAL DIAMETER | 0.2495 INCHES SECOND END | | FACE NOMINAL WIDTH | 0.096 INCHES | | FIRST GROOVE NOMINAL DIAMETER | 0.2295 INCHES SECOND END | | FIRST GROOVE NOMINAL WIDTH | 0.0300 INCHES SECOND END | | HUB NOMINAL DIAMETER | 0.1815 INCHES FIRST END | | HUB STYLE DESIGNATOR | 1 GROOVE SECOND END | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | ALUMINUM ALLOY 6061 OVERALL | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.064 INCHES SECOND END | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.140 INCHES FIRST END | | NOMINAL DISTANCE FROM END TO FIRST GROOVE | 0.0340 INCHES SECOND END | | NOMINAL OUTSIDE DIAMETER | 1.6823 INCHES | | PITCH DIAMETER | 1.6657 INCHES MINIMUM AND 1.6667 INCHES MAXIMUM | | PRESSURE ANGLE | 20.0000 DEGREES | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | | STYLE DESIGNATOR | PROTRUDING HUBS | | TEETH QUANTITY | 200 | | TOOTH FORM | STANDARD |
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