Dc-motor to Rotate Universal LNB on Motorised dish

[AL-MADHI]

Hi , guys I am looking for a dc-motor with reverse polarity switch to change the rotation of the dc-motor so that I can connect the body of the Universal LNB to this dc-motor , both of them are attached to the holder of the LNB at the focal point so that I can rotate the whole body of the Universal LNB 45 Degree sideways ( Left or Right ) . The reason for this is to change Polarization Skew for different satellites .
As everybody knows that Universal LNB is actually designed for Fixed dish
I am using a H-H motorized dish 3.8 meter ( Paraclipse ) . If anybody has a better idea to do the job I need mentioned above Please tell .

Any thought you would have be greatly appreciated .

Best Regards