Finer PT 08B1-34PB Pilot Bore Sprocket – 08B-1 Simplex – 1/2″ Pitch – 34 Teeth

The Finer PT 08B1-34PB is a 34 tooth pilot bore sprocket for 08B-1 simplex British Standard roller chain – 1/2″ (12.7mm) pitch. It has a 137.6mm pitch circle diameter (PCD) and a 142.5mm outside diameter. It comes with a 16mm pilot bore.

A pilot bore sprocket is supplied with a small starter bore so it can be machined out to suit the shaft – keyway and set screws. Finer sprockets are made from high quality steel with induction hardened teeth – improving resistance to wear and extending working life. All Finer sprockets are engineered in accordance with ISO 9000 standards.

Dimensions:

• Hub diameter (dm): 90 mm
• Overall length (A): 30 mm
• Tooth width (B1): 7.2 mm
• Tooth radius (r3): 13 mm
• Radius width (C): 1.3 mm
• Approx. weight: 1.56 kg
• Chain: 1/2″ (12.7 mm) pitch – 7.75 mm inside width – 8.51 mm roller diameter

BS / ASA interchange (1/2″ pitch – BS 08B-1 and ASA 40-1): BS sprockets will wrap ASA chain but ASA sprockets will not wrap BS chain – the roller diameters differ.

Please note: this pilot bore sprocket is supplied with a 16mm pilot bore – it is not finish bored.

Downloads:

• Finer PT 08B Pilot Bore Sprockets Spec Sheet (PDF)
• Finer PT Sprockets BS / ASA Interchange Chart (PDF)

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