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National Stock Number:
3020-01-256-5377
Federal Supply Class:
3020
National Item Identification Number:
012565377
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:
| 807551 | 96214 | RAYTHEON COMPANY | | 807551-1056 | 96214 | RAYTHEON COMPANY | | Z6G-56R | 00328 | DESIGNATRONICS INCORPORATED | | PABP54-56Q12 | 23266 | SECS INC |
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Techincal Specification:
| MATERIAL | STEEL COMP 303 BODY | | STEEL COMP 303 HUB | | STEEL COMP 302 SPRING | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM-A-484 ASSN STD SINGLE MATERIAL RESPONSE BODY | | ASTM-A-484 ASSN STD SINGLE MATERIAL RESPONSE HUB | | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING | | SURFACE TREATMENT | PASSIVATE BODY | | PASSIVATE HUB | | CADMIUM SPRING | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TYPE II FED SPEC SINGLE TREATMENT RESPONSE BODY | | QQ-P-35,TYPE I FED SPEC SINGLE TREATMENT RESPONSE HUB | | QQ-P-416,TYPE II,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE SPRING | | TEETH QUANTITY | 56 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | PRECISION CLASSIFICATION | QUALITY NUMBER 12 | | STYLE DESIGNATOR | PROTRUDING HUB | | PITCH DIAMETER | 0.7768 INCHES MINIMUM AND | | 0.7778 INCHES MAXIMUM | | NOMINAL OUTSIDE DIAMETER | 0.805 INCHES | | FACE NOMINAL WIDTH | 0.104 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.221 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 | 0.437 INCHES FIRST END |
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