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National Stock Number:
3020-01-026-3944
Federal Supply Class:
3020
National Item Identification Number:
010263944
Description:
GEAR,ANTIBACKLASH,WORM WHEEL
Detail:
AN ITEM HAVING ONE FIXED GEAR AND ONE FREE GEAR, BOTH HAVING THE SAME COMPLEMENT OF WORM WHEEL 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:
| Q14-14 | 00141 | ROLLER BEARING CO OF AMERICA, INC |
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Techincal Specification:
| BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | FACE TYPE | CONCAVE | | FACE NOMINAL WIDTH | 0.188 INCHES | | HELIX ANGLE | 3.5625 DEGREES | | HUB NOMINAL DIAMETER | 0.500 INCHES FIRST END | | HUB STYLE DESIGNATOR | PINNED FIRST END | | HUB STYLE DESIGNATOR | THREADED SECOND END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-637 FED SPEC SINGLE MATERIAL RESPONSE BODY | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE HUB | | MATERIAL | COPPER ALLOY 464 BODY | | MATERIAL | STEEL COMP 303 HUB | | MATING THREAD LEAD QUANTITY | 1 | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 1.188 INCHES SECOND END | | NOMINAL OUTSIDE DIAMETER | 2.125 INCHES | | PITCH DIAMETER | 2.0833 INCHES NOMINAL | | PRESSURE ANGLE | 14.5000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUBS | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 100 | | THROAT NOMINAL RADIUS | 1.020 INCHES | | TOOTH DIRECTION | RIGHT |
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