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National Stock Number:
3020-00-229-9499
Federal Supply Class:
3020
National Item Identification Number:
002299499
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:
| 170720-6 | 24930 | L3HARRIS TECHNOLOGIES, INC |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY BODY | | STEEL CORROSION RESISTING HUB | | ALUMINUM ALLOY TEETH | | SURFACE TREATMENT | ANODIZE BODY | | PASSIVATE HUB | | ANODIZE TEETH | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE BODY | | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE TEETH | | TEETH QUANTITY | 79 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | | BACKLASH DESIGNATION | GRADE C | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 1.6458 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 1.6875 INCHES | | FACE NOMINAL WIDTH | 0.125 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.313 INCHES FIRST END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | HUB NOMINAL DIAMETER | 0.313 INCHES FIRST END | | CLAMPING SURFACE NOMINAL LENGTH | 0.250 INCHES FIRST END | | ATTACHMENT METHOD | CLAMP | | SPECIAL FEATURES | ONE PLAIN HOLE 0.064 IN. DIA THROUGH BODY ON 0.600 IN. BOLT CIRCLEDIA | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 24930 | | DESIGN CONTROL REFERENCE | 170720-6 |
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