Take a look at a Pixar’s plugin for Substance Painter to enable the export of a project as a RenderManAsset.

Take a look at a Pixar’s plugin for Substance Painter to enable the export of a project as a RenderManAsset that can be imported directly to Maya using the RenderMan preset browser. The plugin has been around for a while, but we’ve somehow omitted it.

That’s how it works:

This plugin exports your Substance Painter project as one or more RenderManAsset.

RenderManAsset is the format used by the preset browser that was introduced in RenderMan For Maya 21.0. It allows for easy material setup interchange and includes dependencies like textures or OSL shaders.

RfSP 

You can learn more about the plugin and get it here.