Creo que lo más sencillo es que contactes con el propio fabricante.
A continuación un texto extraído de su Web que pienso puede ser de
ayuda.
"If you've ever tried to get parts or service on our competitors'
rotators, you know how difficult that can be. One call to our Rotator
Customer Service number (402) 465-7037 and you can get answers to your
questions as well as getting your parts shipped right away - many
times the same day! And unlike some of our competitors, our rotators
use American nuts and bolts, not Metric. "
Espero sirva de ayuda
Cosme EA3TB
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