2510-01-434-8191 SHOCK ABSORBER,DIRECT ACTION Index 4820-01-434-8193 VALVE,SAFETY RELIEF

National Stock Number:
3020-01-434-8192

Federal Supply Class:
3020

National Item Identification Number:
014348192

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.


Manufacturer Information:
2351-1052395542NORTHROP GRUMMAN SYSTEMS CORPORATION
2351-10523-015Z509ABB T AND D POWER CO INC
2351-10523-017Y951PEERLESS INSTRUMENT CO., INC.
2351-10523-0195542NORTHROP GRUMMAN SYSTEMS CORPORATION


Techincal Specification:
MATERIALSTEEL CORROSION RESISTING FIRST GEAR
STEEL RETAINING RING
STEEL CORROSION RESISTING SECOND GEAR
STEEL COMP 302 SPRING
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5643N ASSN STD 1ST MATERIAL RESPONSE FIRST GEAR
AMS 5520 ASSN STD 2ND MATERIAL RESPONSE RETAINING RING
AMS 5643N ASSN STD 3RD MATERIAL RESPONSE SECOND GEAR
MIL-S-5059 MIL SPEC 4TH MATERIAL RESPONSE SPRING
SURFACE TREATMENTPASSIVATE RETAINING RING
PASSIVATE SPRING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC 2ND TREATMENT RESPONSE RETAINING RING
QQ-P-35 TYPE 1 FED SPEC 1ST TREATMENT RESPONSE SPRING
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND
40.0 ROCKWELL C MAXIMUM FIRST GEAR
63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND
69.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM RETAINING RING
35.0 ROCKWELL C MINIMUM AND
40.0 ROCKWELL C MAXIMUM SECOND GEAR
TEETH QUANTITY288
TOOTH FORMSTANDARD
PRESSURE ANGLE20.0000 DEGREES
PRECISION CLASSIFICATIONQUALITY NUMBER 12
STYLE DESIGNATORPROTRUDING HUB
PITCH DIAMETER6.0000 INCHES NOMINAL
NOMINAL OUTSIDE DIAMETER6.0417 INCHES
FACE NOMINAL WIDTH0.1650 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.3500 INCHES SECOND END
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.2497 INCHES BOTH ENDS
HUB STYLE DESIGNATORSPLIT SECOND END
HUB NOMINAL DIAMETER0.3120 INCHES SECOND END
CLAMPING SURFACE NOMINAL LENGTH0.2480 INCHES SECOND END


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