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National Stock Number:
3020-00-198-5389
Federal Supply Class:
3020
National Item Identification Number:
001985389
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:
| Q14-45C | 00141 | ROLLER BEARING CO OF AMERICA, INC |
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Techincal Specification:
| ATTACHMENT METHOD | CLAMP | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | CLAMPING SURFACE NOMINAL LENGTH | 0.250 INCHES FIRST END | | FACE NOMINAL WIDTH | 0.188 INCHES | | HELIX ANGLE | 3.5833 DEGREES | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-637,ALLOY 464 FED SPEC SINGLE MATERIAL RESPONSE TEETH | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,TYPE 303,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB | | MATING THREAD LEAD QUANTITY | 1 | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | HUB STYLE DESIGNATOR | THREADED SECOND END | | III MATERIAL | COPPER ALLOY 464 TEETH | | III MATERIAL | STEEL COMP 303 HUB | | PITCH DIAMETER | 1.8740 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM | | PRESSURE ANGLE | 14.5000 DEGREES | | PROPRIETARY CHARACTERISTICS | PACS | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.188 INCHES SECOND END | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.250 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.9380 INCHES | | NOMINAL OVERALL LENGTH | 0.609 INCHES | | STYLE DESIGNATOR | PROTRUDING HUBS | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 90 | | THROAT NOMINAL RADIUS | 0.146 INCHES | | TOOTH DIRECTION | RIGHT |
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