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National Stock Number:
3020-00-368-8237
Federal Supply Class:
3020
National Item Identification Number:
003688237
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:
| 7521071 | 01351 | SOUTHERN GEAR & MACHINE INC | | 901004-4C | 82577 | RAYTHEON COMPANY | | 9703-1002S | 12444 | DESIGNATRONICS INC PERFECT GEAR AND INSTRUMENT DIV |
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Techincal Specification:
| MATERIAL | STEEL COMP 303 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | TEETH QUANTITY | 72 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | | STYLE DESIGNATOR | PROTRUDING HUBS | | PITCH DIAMETER | 0.7500 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 0.771 INCHES | | FACE NOMINAL WIDTH | 0.104 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.203 INCHES FIRST END | | 0.050 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.125 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | 1 GROOVE SECOND END | | HUB NOMINAL DIAMETER | 0.183 INCHES FIRST END | | 0.312 INCHES SECOND END | | CLAMPING SURFACE NOMINAL LENGTH | 0.172 INCHES FIRST END | | FIRST GROOVE NOMINAL WIDTH | 0.029 INCHES SECOND END | | FIRST GROOVE NOMINAL DIAMETER | 0.290 INCHES SECOND END | | NOMINAL DISTANCE FROM END TO FIRST GROOVE | 0.021 INCHES SECOND END | | ATTACHMENT METHOD | CLAMP | | FURNISHED ITEMS AND QUANTITY | 1 RETAINING RING AND | | 1 STOP PIN |
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