Industrial Application Analog Camera On Brass Slip Ring Contacs.

I have a industrial client with a machine that spins 1500 rpm the camera is mounted on the machine (there is no other option). We have the camera installed directly onto the metal of the machine (it could be isolated) and connection is thru carbon brushes and 4 brass slip rings. Picture is great until we get up to speed then noise on picture makes it almost useless and very annoying for the operator to monitor the process. Camera is 12vdc, would a 24vac camera work better? Is there a noise filter for this type of application? We sanded slip rings with the machine running and seated the brushes in place with sand paper as well. Is there a conductive grease that can be used to increase conductivity on the slip ring? I'm thinking noise is coming off machine. We used rg59 and made every effort to to keep wiring away from the 480 3 phase motor wiring.

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