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National Stock Number:
3020-00-406-4783
Federal Supply Class:
3020
National Item Identification Number:
004064783
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:
| 60878 | 82340 | L3HARRIS TECHNOLOGIES, INC. | | 60878-2 | 82340 | L3HARRIS TECHNOLOGIES, INC. | | AB250-225P2-0-2498 | 01351 | SOUTHERN GEAR & MACHINE INC | | AB250-225P2-0-2498 SPCL | 01351 | SOUTHERN GEAR & MACHINE INC | | 60878-2 | 9Y580 | L3HARRIS TECHNOLOGIES, INC. |
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Techincal Specification:
| MATERIAL | ALUMINUM ALLOY 2024 BODY | | STEEL COMP 303S HUB | | STEEL COMP 302 SPRING | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/4C FED SPEC SINGLE MATERIAL RESPONSE OR | | QQ-A-225/6B FED SPEC SINGLE MATERIAL RESPONSE BODY | | MIL-S-7720 MIL STD SINGLE MATERIAL RESPONSE HUB | | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE SPRING | | SURFACE TREATMENT | ANODIZE BODY | | PASSIVATE HUB | | PASSIVATE SPRING | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY | | MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE HUB | | MIL-F-14072,E300 MIL SPEC SINGLE TREATMENT RESPONSE SPRING | | TEETH QUANTITY | 225 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | PRECISION CLASSIFICATION | QUALITY NUMBER 12 | | BACKLASH DESIGNATION | GRADE D | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 3.5156 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 3.546 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 | 0.250 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | PINNED FIRST END | | HUB NOMINAL DIAMETER | 0.563 INCHES FIRST END |
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