Maximum output current OpAmp
In the data sheet there are hints about what you can load the op-amp with. The maximum peak-to-peak output voltage when loaded with 10kohm is guaranteed to be +/-12V on a +/-15V supply regime.

When loaded with 2kohm the max voltage is somewhat less at +/-10V.

I would usually consider that 2kohm loading is the minimum you should have.

All that info is on page 6 of the DS. I would also look at these graphs for what to expect at lower suply voltages: -



These are on page 9 and page 10 gives you more information when the ambient temperature is different. See also this graph on page 10: -




  I am not able to find any information about the maximum output current
  in it.


The last graph should give you the information you need and you should probably consider 1kohm for R3