12B-1 Z=28 TL/2517 TL hammasr.

Sprocket for 12B roller chain with taper bore
- 3/4 x 7/16 / DIN 8187
- Pitch 19.05 mm
- Tooth widths: 12B-1: 11.1 mm 12B-2: 30.3 mm 12B-3: 49.8 mm
- Material: C45
- Our selection also includes a wide range of taper locks for various shaft bores

Markings:
- TL/ = taper lock size
- de = top diameter (mm)
- dp = pitch diameter (mm)
- dm= boss diameter (mm)
- b = width of a single tooth (mm)
- B = total tooth width (mm)