CNC Coolant

[Steve355Participant @steve355]

There seem to be 24l and 8l Hyundai compressors at Screwfix both for around £150…

[DiogenesParticipant @diogenes]

Do the £150 ones deliver enough air – they’re quoted at about 150L/min FAD..?

[Steve355Participant @steve355]

One is 120 and the other is 150 l/m.

The smaller is 8l and the larger 24l. I guess that’s the capacity of the reservoir.

[JasonBModerator @jasonb]

One thing to be aware of is that most hobby compressors state the displacement. due to losses this is a higher figure that what you will get out of the compressor which is known as Free Air Delivery or FAD.

Typicaly the FAD will be 50-70% of the displacement. Hence my post yesterday where I said 8CFM( 225l/m) from mine when they are sold as 11cfm as that is the displacement but just looking it is acually less than 8cfm.

So if the screwfix ones are single motor expect 60-75l/m out of them.

Yes the 8 and  24 are the tank capacities, I have a 50lts

[JasonBModerator @jasonb]

Screwfix are quoting the wrong figure for FAD. On the cheaper 8lts tank model they give FAD as 120l/m but if you look at Hyundai site the 120lts is displacement and the actual FAD is 53l/min.

Also £30 cheaper from Hyundai

 

[Steve355Participant @steve355]

Aha… I thought the Screwfix figures looked fishy. Hyundai website it is then.

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