3020-01-124-8143 GEAR,SPUR Index 6940-01-124-8145 CONTROL,SIMULATOR

National Stock Number:
3020-01-124-8144

Federal Supply Class:
3020

National Item Identification Number:
011248144

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:
AP64S-9629440W. M. BERG INC
DP153T9629964ALLIED DEVICES CORP DBA ABSOLUTE PRECISION CO
P15-3-9600141ROLLER BEARING CO OF AMERICA, INC


Techincal Specification:
MATERIALSTEEL COMP 303 FIRST GEAR
STEEL COMP 303 HUB
STEEL COMP 303 SECOND GEAR
STEEL COMP 302 SPRING
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC 1ST MATERIAL RESPONSE FIRST GEAR
QQ-S-764 FED SPEC 2ND MATERIAL RESPONSE HUB
QQ-S-764 FED SPEC 3RD MATERIAL RESPONSE SECOND GEAR
QQ-S-766 FED SPEC 4TH MATERIAL RESPONSE SPRING
SURFACE TREATMENTPASSIVATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING75.0 ROCKWELL B MINIMUM AND
90.0 ROCKWELL B MAXIMUM OVERALL
TEETH QUANTITY96
TOOTH FORMSTANDARD
PRESSURE ANGLE20.0000 DEGREES
PRECISION CLASSIFICATIONQUALITY NUMBER 10
BACKLASH DESIGNATIONGRADE C
STYLE DESIGNATORPROTRUDING HUB
PITCH DIAMETER1.4990 INCHES MINIMUM AND
1.50000 INCHES MAXIMUM
NOMINAL OUTSIDE DIAMETER1.531 INCHES
FACE NOMINAL WIDTH0.104 INCHES
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END0.281 INCHES FIRST END
BORE STYLEPLAIN BOTH ENDS
BORE NOMINAL DIAMETER0.125 INCHES BOTH ENDS
HUB STYLE DESIGNATORPINNED FIRST END
HUB NOMINAL DIAMETER0.310 INCHES FIRST END
FURNISHED ITEMS AND QUANTITY1 SETSCREW


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