Is the shaft exerting 600 pounds of force on the table?

[mrbug]

I have a shaft laying across a table. At each end of the shaft I have a cylinder. Each cylinder is capable of appling 300 pounds of force. My question is; Is the shaft applying 600 pounds of force to the table or just 300?

 

[FredGarvin]

Looking at the most basic load, i.e. no moments...600 pounds force (assuming both cylinders are applying a force).

Basic statics: $$\Sigma F_y = 0$$

 

[mrbug]

Thanks for the quick response and help.