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National Stock Number:
3020-00-038-7177
Federal Supply Class:
3020
National Item Identification Number:
000387177
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:
| 580R495H04 | 00141 | ROLLER BEARING CO OF AMERICA, INC | | 580R495H04 | 97942 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
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Techincal Specification:
| ATTACHMENT METHOD | MOUNTING HOLE | | BACKLASH DESIGNATION | GRADE E | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.090 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.104 INCHES | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | HUB STYLE DESIGNATOR | PINNED FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL COMP 303 OVERALL | | MOUNTING HOLE NOMINAL THREAD SIZE | 0.086 INCHES TRANSVERSELY THROUGH HUB, FIRST END | | MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC TRANSVERSELY THROUGH HUB, FIRST END | | MOUNTING HOLE TYPE AND QUANTITY | 2 THREADED TRANSVERSELY THROUGH HUB, FIRST END | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.281 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.186 INCHES | | PITCH DIAMETER | 1.1451 INCHES MINIMUM AND 1.1458 INCHES MAXIMUM | | PRECISION CLASSIFICATION | QUALITY NUMBER 12 | | PRESSURE ANGLE | 20.0000 DEGREES | | SPECIAL FEATURES | MTG HOLES SPACED 90 DEG APART,ONE UNTHD HOLE 0.032 IN. DIA THRU BODY | | STYLE DESIGNATOR | PROTRUDING HUB | | TEETH QUANTITY | 55 | | TOOTH FORM | STANDARD |
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