Annular Sector Gear and Pinion Set 

Gear Ratio:  3 rotations (1080°) of Pinion  = 120° of rotation of annular gear (end to end)

Annular Gear:

6" Pitch Diameter, 3" Pitch Radius (estimated)

120° Sector 

Material: Brass

Mounting Holes: 6-32

Thickness: 0.1875"

Pinion Gear: 

Pinion Drive Motor Shaft Diameter: 6.0mm (0.235")

Pitch Diameter: 0.56" (estimated)

Pinion Base Diameter: 0.625"

Pinion Overall Height: 1.085"

Single Hex Set Screw (included): 10-32 x 0.25"

Gear tooth chamfer 

Buyer receives:

120° Annular Sector Gear

Pinion Gear with Set Screw