The Bruntons Sigmadrive is a compact and easy to fit flexible coupling.
The required model of Sigmadrive is based on engine horsepower, maximum rpm and gearbox reduction. Use this spreadsheet to calculate the model.
Sigmadrive SD55 - Maximum 6.5hp per 100rpm.
Sigmadrive SD100 - Maximum 13hp per 100rpm
A gearbox spacer may be required when installing a Sigmadrive to replace an existing flexible coupling due to the compact nature of the Sigmadrive. Dimensions.
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