The Approx dimensions of a 1/2×39 Chain Sprocket are typically as follows:

Sprocket Diameter: 164.1 mm

Boss Diameter: 75 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 164.1 Nos.

The Approx dimensions of a 1/2×40 Chain Sprocket are typically as follows:

Sprocket Diameter: 168.1 mm

Boss Diameter: 80 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 40 Nos.

The Approx dimensions of a 1/2×43 Chain Sprocket are typically as follows:

Sprocket Diameter: 180.3 mm

Boss Diameter: 80 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 43 Nos.

The Approx dimensions of a 1/2×44 Chain Sprocket are typically as follows:

Sprocket Diameter: 184.3 mm

Boss Diameter: 80 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 44 Nos.