122 (ISO 24B)

Metric Standard Bored-To-Size Sprockets

DIN 8187

ISO 606 B

BS 228

Part Number Example:

122B34.22

122 = Single Strand Ametric® Sprocket

(2122 = Double Strand Ametric® Sprocket)

(3122 = Triple Strand Ametric® Sprocket )

(1-1/2 Inch Pitch x 1 Inch Tooth Width to European/British Standard)

24 B ISO Roller Chain Sprocket

B = With Hub (A = No Hub)

34 = 34 teeth

(34H = 34 Hardened Teeth)

(34SS = 34 Teeth Stainless Steel)

34PM = 34 Teeth Plastic Molded)

.22 = 22 mm Bore

PDF - SprocketsMetric(BS)BoredtoSize.pdf