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National Stock Number:
3020-00-073-6642
Federal Supply Class:
3020
National Item Identification Number:
000736642
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:
| 1852456 | 03956 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 1852456 | 56232 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 2024 BODY | | STEEL COMP 303 HUB | | ALUMINUM ALLOY 2024 TEETH | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE BODY | | FED STD 66 FED STD SINGLE MATERIAL RESPONSE HUB | | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE TEETH | | SURFACE TREATMENT | ANODIZE BODY | | ANODIZE TEETH | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY | | MIL-A-8625,TYPE 1,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE TEETH | | TEETH QUANTITY | 162 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 2.5312 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 2.5625 INCHES | | FACE NOMINAL WIDTH | 0.125 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.873 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | PLAIN FIRST END | | HUB NOMINAL DIAMETER | 0.562 INCHES FIRST END | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 03956 | | DESIGN CONTROL REFERENCE | 1852456 |
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