Heads and Mainshafts are not available as separate components. The Mainshaft on early couplings was 1 1/4" dia over its full length and the Spring was retained with a Washer and Circlip. Later models have a "Stepped Shaft" being 1 1/2" dia where the Shaft meets the Head. Current models have the Head and Shaft cast as one piece.

 

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Trojan Coupling - Duofit - Override Braked - Spring Damper - Spare Parts
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