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National Stock Number:
3020-01-131-7807
Federal Supply Class:
3020
National Item Identification Number:
011317807
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:
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Techincal Specification:
| ATTACHMENT METHOD | MOUNTING HOLE | | BORE NOMINAL DIAMETER | 1.000 INCHES BOTH ENDS | | BORE STYLE | PLAIN BOTH ENDS | | FACE NOMINAL WIDTH | 0.062 INCHES | | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 416 OVERALL | | MOUNTING HOLE NOMINAL DIAMETER | 0.047 INCHES TRANSVERSELY THROUGH FACE | | MOUNTING HOLE TYPE AND QUANTITY | 1 PLAIN TRANSVERSELY THROUGH FACE | | NOMINAL OUTSIDE DIAMETER | 2.0000 INCHES | | PITCH DIAMETER | 1.9792 INCHES NOMINAL | | PRESSURE ANGLE | 20.0000 DEGREES | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171,FINISH NO. 5.4.1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | PASSIVATE OVERALL | | TEETH QUANTITY | 190 | | TOOTH FORM | STANDARD |
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