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National Stock Number:
3020-01-317-5398
Federal Supply Class:
3020
National Item Identification Number:
013175398
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:
| 138C517 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 138C517H01 | 48306 | NORTHROP GRUMMAN SUPPORT SERVICES CORP | | LES-C1-42 | 0MTR9 | NORDEX, INCORPORATED | | AP24B-42 | 29440 | W. M. BERG INC | | DP72T42 | 29964 | ALLIED DEVICES CORP DBA ABSOLUTE PRECISION CO | | 138C517H01 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | P7-2-42-C | 00141 | ROLLER BEARING CO OF AMERICA, INC | | LES-C1-42 | 56262 | NORDEX INC |
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Techincal Specification:
| BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | BORE STYLE | PLAIN BOTH ENDS | | FACE NOMINAL WIDTH | 0.188 INCHES | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE BODY | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE HUB | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE SPRING | | MATERIAL | STEEL COMP 302 SPRING | | MATERIAL | STEEL COMP 303 BODY | | MATERIAL | STEEL COMP 303 HUB | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.240 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.833 INCHES | | PITCH DIAMETER | 1.7500 INCHES NOMINAL | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 42 |
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