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National Stock Number:
3040-00-005-7460
Federal Supply Class:
3040
National Item Identification Number:
000057460
Description:
WORM SHAFT
Detail:
A DRIVE SHAFT HAVING HELICAL THREAD(S) ON A PORTION OF ITS OUTER SURFACE, MACHINED BEARING SURFACE(S) AND FACILITIES FOR DRIVING (OTHER THAN A HUB) ON ONE OR BOTH ENDS OF SHAFT. DESIGNED TO MATE WITH A CAM, GEAR SECTOR, WORM WHEEL, ETC. INCLUDES ITEMS WITH BEARINGS. EXCLUDES ITEMS HAVING MORE THAN ONE WORM COMPLEMENT OF HELICAL THREADS, ITEMS WITH A SEPARATE COMPLEMENT OF GEAR TEETH, AND GEAR, WORM.
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Manufacturer Information:
| DW1243G11 | 15330 | IMO INDUSTRIES INC DELROYD WORM GEAR DIV | | DW1243G11 | 16712 | SIEMENS ENERGY, INC. | | WE-12619 | 16712 | SIEMENS ENERGY, INC. |
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Techincal Specification:
| END SIMILARITY | NOT IDENTICAL | | OVERALL LENGTH | 19.875 INCHES NOMINAL | | MATERIAL | STEEL | | SCREW THREAD SERIES DESIGNATOR | UN FIRST END, FIRST PORTION | | SHAFT HARDNESS RATING | 36.6 ROCKWELL C MINIMUM | | SHAFT LOCATION | BOTH ENDS OF WORM | | SHAFT THREAD DIRECTION | RIGHT-HAND FIRST END, FIRST PORTION | | WORM HELIX ANGLE | 43DEG58MIN26SEC | | WORM OUTSIDE DIAMETER | 3.209 INCHES MINIMUM AND 3.211 INCHES MAXIMUM | | WORM PITCH DIAMETER | 2.782 INCHES NOMINAL | | WORM THREAD DIRECTION | RIGHT-HAND | | WORM PRESSURE ANGLE IN DEG | 22.500 | | WORM THREAD LEAD | 8.432 INCHES NOMINAL | | WORM THREAD QUANTITY | 12 | | WORM THREAD SECTION LENGTH | 3.750 INCHES NOMINAL | | STRAIGHT UNTHREADED LENGTH | 1.250 INCHES NOMINAL SECOND END, FIRST PORTION | | STRAIGHT UNTHREADED SECTION DIAMETER | 0.880 INCHES NOMINAL SECOND END, FIRST PORTION | | TEETH HARDNESS RATING | 56.0 ROCKWELL C MINIMUM AND 59.2 ROCKWELL C MAXIMUM | | THREAD LENGTH | 0.438 INCHES NOMINAL FIRST END, FIRST PORTION |
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