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National Stock Number:
3020-00-942-4959
Federal Supply Class:
3020
National Item Identification Number:
009424959
Description:
GEAR,ANTIBACKLASH,SPUR
Detail:
An item having one fixed gear and one free gear, both having the same complement of spur 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:
| 542-4469-002 | 13499 | ROCKWELL COLLINS, INC. | | SM-B-178919 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR | | SMB178919REVA | 63689 | PROFILE GEAR CORP |
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Techincal Specification:
| MATERIAL | STEEL COMP 301 FIRST GEAR | | STEEL COMP 303 HUB | | STEEL COMP 301 SECOND GEAR | | STEEL SPRING | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE FIRST GEAR | | QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE HUB | | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE SECOND GEAR | | SURFACE TREATMENT | PASSIVATE FIRST GEAR | | PASSIVATE HUB | | PASSIVATE SECOND GEAR | | TEETH QUANTITY | 52 | | TOOTH FORM | STANDARD | | PRESSURE ANGLE | 20.0000 DEGREES | | BACKLASH DESIGNATION | GRADE B | | STYLE DESIGNATOR | PROTRUDING HUBS | | PITCH DIAMETER | 1.6250 INCHES NOMINAL | | NOMINAL OUTSIDE DIAMETER | 1.688 INCHES | | FACE NOMINAL WIDTH | 0.110 INCHES | | NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END | 0.278 INCHES FIRST END | | 0.031 INCHES SECOND END | | BORE STYLE | PLAIN BOTH ENDS | | BORE NOMINAL DIAMETER | 0.250 INCHES BOTH ENDS | | HUB STYLE DESIGNATOR | SPLIT FIRST END | | PLAIN SECOND END | | HUB NOMINAL DIAMETER | 0.312 INCHES FIRST END | | 0.563 INCHES SECOND END | | CLAMPING SURFACE NOMINAL LENGTH | 0.250 INCHES FIRST END | | ATTACHMENT METHOD | CLAMP |
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