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National Stock Number:
3020-01-025-0489
Federal Supply Class:
3020
National Item Identification Number:
010250489
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:
| 4256A404PC3 | 23905 | L-3 COMMUNICATIONS WESTWOOD CORPORATION DBA EDI DIVISION DIV TANO DIVISION | | 4256A424 | 23905 | L-3 COMMUNICATIONS WESTWOOD CORPORATION DBA EDI DIVISION DIV TANO DIVISION | | Q13-35SPECIAL | 00141 | ROLLER BEARING CO OF AMERICA, INC |
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Techincal Specification:
| ATTACHMENT METHOD | CLAMP | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.188 INCHES BOTH ENDS | | FACE NOMINAL WIDTH | 0.188 INCHES | | FACE TYPE | CONCAVE | | HELIX ANGLE | 3.5625 DEGREES | | HUB NOMINAL DIAMETER | 0.250 INCHES FIRST END | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-637 FED SPEC SINGLE MATERIAL RESPONSE BODY | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE HUB | | MATERIAL | COPPER ALLOY 464 BODY | | MATERIAL | STEEL COMP 303 HUB | | MATING THREAD LEAD QUANTITY | 2 | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.219 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 1.484 INCHES | | PITCH DIAMETER | 1.4526 INCHES NOMINAL | | PRESSURE ANGLE | 14.5000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 93 | | TOOTH DIRECTION | RIGHT |
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