75 series air con compressor make, model

[Colin Edwards]

The pulley is machined steel. 
After some fairly agressive cleaning the outer race "D" looks like 42mm.  "d" is 20mm and "B" 16mm.
Definitely not a 6204 or 6304. 
Bearing now looks like its been pressed in against a shoulder in pulley. 

[Colin Edwards]

Looks like its a 63004
Now to remove it!

[bazzbazz]

I asked as you can press out the steel pullies but the plastic ones are a replace scenario.

[Colin Edwards]

Thanks.
Must be an aggressive class of fit.  Heated it up to 200C and gave it a good wack with my preferred adjustment tool - no joy! 
Next stop the 20T press.  SKF have 63004's on the shelf.