08B-1 Z=25 Simplex hammasr.

Hub sprocket for 08B roller chain
- 1/2 x 5/16 / DIN 8187
- Pitch 12.7 mm
- Tooth widths: 08B-1: 7.2 mm, 08B-2: 21.0 mm, 08B-3: 34.9 mm
- The name of the products with a ready-made keyway indicates the drilling, e.g. D=30H7+ku
- Also available machined according to the drawing
- Material: C45

Markings:
- de=top diameter (mm)
- dp=pitch diameter (mm)
- dm=hub diameter (mm)
- D=diameter of the pre-drilled or finished shaft bore (mm)
- b=width of the individual tooth (mm)
- B=total tooth width (mm)5