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National Stock Number:
3020-00-628-0238
Federal Supply Class:
3020
National Item Identification Number:
006280238
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:
| 77C708688P012 | 03538 | LOCKHEED MARTIN CORPORATION | | 77C708688P12 | 03538 | LOCKHEED MARTIN CORPORATION | | AB250-75-250/SS-P2 | 01351 | SOUTHERN GEAR & MACHINE INC | | AB250-75-250SSP | 01351 | SOUTHERN GEAR & MACHINE INC |
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Techincal Specification:
| BACKLASH DESIGNATION | GRADE D | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | BORE STYLE | PLAIN BOTH ENDS | | FACE NOMINAL WIDTH | 0.125 INCHES | | HUB STYLE DESIGNATOR | PINNED FIRST END | | HUB NOMINAL DIAMETER | 0.375 INCHES FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | FED STD 66,AISI 302/SAE30302 FED STD 1ST MATERIAL RESPONSE OR FED STD 66,AISI 303.SAE 30303 FED STD 2ND MATERIAL RESPONSE OR FED STD 66,AISI 416.SAE 51416 FED STD 3RD MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 416 OVERALL | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.2031 INCHES | | NOMINAL OVERALL LENGTH | 0.375 INCHES | | PITCH DIAMETER | 1.1718 INCHES NOMINAL | | PRECISION CLASSIFICATION | QUALITY NUMBER 12 | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL F 14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 75 | | TOOTH FORM | STANDARD |
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