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National Stock Number:
3020-00-232-0908
Federal Supply Class:
3020
National Item Identification Number:
002320908
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:
| 927005-1 | 09205 | LOCKHEED MARTIN CORP ELECTRONICS AND MISSILES DIV | | WE10S | 00328 | DESIGNATRONICS INCORPORATED |
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Techincal Specification:
| ATTACHMENT METHOD | CLAMP | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | BORE STYLE | PLAIN BOTH ENDS | | CLAMPING SURFACE NOMINAL LENGTH | 0.215 INCHES FIRST END | | FACE NOMINAL WIDTH | 0.187 INCHES | | FACE TYPE | CONCAVE | | HELIX ANGLE | 7.0000 DEGREES | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE HUB | | MATERIAL | STEEL COMP 303 HUB | | MATING THREAD LEAD QUANTITY | 2 | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.215 INCHES FIRST END | | NOMINAL OUTSIDE DIAMETER | 2.070 INCHES | | NOMINAL OVERALL LENGTH | 0.402 INCHES | | PITCH DIAMETER | 1.8740 INCHES MINIMUM AND 1.8750 INCHES MAXIMUM | | PRESSURE ANGLE | 20.0000 DEGREES | | STYLE DESIGNATOR | PROTRUDING HUB | | SURFACE TREATMENT | PASSIVATE HUB | | TEETH QUANTITY | 90 | | THROAT NOMINAL RADIUS | 0.155 INCHES | | TOOTH DIRECTION | RIGHT |
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