National Item Identification Number
00-173-2734
001732734
3020-00-173-2734
3020001732734
National Stock Number
Item Name
GEAR,ANTIBACKLASH,SPUR
Federal Supply Class
3020
Description
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.
Commercial and Government Entity Code (Supplier Data)
58880
Reference Numbers (Part Numbers)
20-300-003
Required Categories
TEETH QUANTITY
TOOTH FORM
PRESSURE ANGLE
PITCH DIAMETER
NOMINAL OUTSIDE DIAM
Required Description
90
STANDARD
20.0000 DEGREES
0.9365 INCHES MINIMUM AND
0.9375 INCHES MAXIMUM;