Finer PT 08A-9 Plate Wheel – 08B-1 Simplex – 1/2″ Pitch – 9 Teeth

The Finer PT 08A-9 is a 9 tooth plate wheel for 08B-1 simplex British Standard roller chain – 1/2″ (12.7mm) pitch. It has a 37.13mm pitch circle diameter (PCD) and a 41.5mm outside diameter. It comes with an 8mm pilot bore.

A plate wheel is a flat sprocket plate without a hub. It is supplied with a pilot bore and is commonly bored out to suit the shaft or welded to a hub for a custom drive. All Finer sprockets are engineered in accordance with ISO 9000 standards.

Dimensions:

• Tooth width (B1): 7.2 mm
• Tooth radius (r3): 13 mm
• Radius width (C): 1.3 mm
• 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 plate wheel is supplied with an 8mm pilot bore – it is not finish bored.

Downloads:

• Finer PT 08A Plate Wheel Sprockets Spec Sheet (PDF)
• Finer PT Sprockets BS / ASA Interchange Chart (PDF)

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