Ike Carlson
Well-known member
I'm building an air compressor for my shop. I have a vertical 120 gallon tank(great condition), and four more 25 gallon tanks to put around the shop or use for quick detach portables that stay charged when connected to the system.
So I have a total of 220 gallons of storage. Total cost $40
I will be using a cooler and wet tank to dry the air.
I picked up an Emax 5hp 2 stage compressor today for $10, no joke. I tore it down and the lower end is rusty. I will clean it up and put new bearings in it. It's a good unit. This thing weighs a couple hundred pounds.
I have a 3hp 3phase motor that runs on a vfd. I have air tools (impact, wrench, drill, etc) and a small sand blaster. I figure 220 gallons should be plenty of storage, but I would like to keep up on air as much as I can. The numbers I have found say I can get 12-15 cfm @100 psi with my 3 phase motor.
I don't know what rpm the EMAX compressors are rated at. (850,1000, etc...)
Does anyone know or do I need to call them on Monday?
I believe this one is a 20 cfm model, so if I know the rated rpm I can reduce the rpm to match the motor.
I have an unloader already, and will be putting it on the compressor.
If anyone can help my with the motor size/rpm or has any tips, please let me know. The motor will run to at least 3500 rpm safely according to Leeson, if it needs to run faster with a smaller pulley. (I want to say it was close to 5,000 rpm max rated rpm.)
So I have a total of 220 gallons of storage. Total cost $40
I will be using a cooler and wet tank to dry the air.
I picked up an Emax 5hp 2 stage compressor today for $10, no joke. I tore it down and the lower end is rusty. I will clean it up and put new bearings in it. It's a good unit. This thing weighs a couple hundred pounds.
I have a 3hp 3phase motor that runs on a vfd. I have air tools (impact, wrench, drill, etc) and a small sand blaster. I figure 220 gallons should be plenty of storage, but I would like to keep up on air as much as I can. The numbers I have found say I can get 12-15 cfm @100 psi with my 3 phase motor.
I don't know what rpm the EMAX compressors are rated at. (850,1000, etc...)
Does anyone know or do I need to call them on Monday?
I believe this one is a 20 cfm model, so if I know the rated rpm I can reduce the rpm to match the motor.
I have an unloader already, and will be putting it on the compressor.
If anyone can help my with the motor size/rpm or has any tips, please let me know. The motor will run to at least 3500 rpm safely according to Leeson, if it needs to run faster with a smaller pulley. (I want to say it was close to 5,000 rpm max rated rpm.)