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National Stock Number:
3020-01-425-8211
Federal Supply Class:
3020
National Item Identification Number:
014258211
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:
| 12373388 | 01365 | MARINE CORPS LOGISTICS COMMAND TECHNICAL DATA REPOSITORY CUSTOMER SERVICE-MICC LOGISTICS OPERATIONS CENTER | | 12373388 | 05606 | GENERAL DYNAMICS-OTS, INC. | | 12373388 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | A168-2-1 | 26420 | ASTRO GEAR AND INSTRUMENT CO INC |
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Techincal Specification:
| MATERIAL | STEEL COMP 303 FIRST GEAR | | STEEL COMP 303 HUB | | STEEL COMP 303 SECOND GEAR | | STEEL COMP 302 SPRING | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE FIRST GEAR | | ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE HUB | | ASTM-A582 ASSN STD SINGLE MATERIAL RESPONSE SECOND GEAR | | ASTM-A313 ASSN STD SINGLE MATERIAL RESPONSE SPRING | | SURFACE TREATMENT | PASSIVATE OVERALL | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 MIL STD SINGLE TREATMENT RESPONSE OVERALL | | TEETH QUANTITY | 33 | | PRESSURE ANGLE | 20.0000 DEGREES | | PRECISION CLASSIFICATION | QUALITY NUMBER 10 | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 4.1250 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 4.359 INCHES | | FACE NOMINAL WIDTH | 0.250 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.310 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.187 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | SPLIT SECOND END | | HUB NOMINAL DIAMETER | 0.248 INCHES SECOND END | | CLAMPING SURFACE NOMINAL LENGTH | 0.250 INCHES SECOND END | | ATTACHMENT METHOD | SLOT |
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