Air Receiver Capacity
(Ft3 of free air at various pressures)
| Receiver (gal.) | Pressure (PSI) | |||||||
| 0 | 75 | 100 | 125 | 150 | 175 | 200 | 250 | |
| 30 | 4.0 | 20.5 | 27.3 | 34.2 | 41.0 | 47.0 | 54.7 | 68.3 |
| 60 | 8.0 | 41.0 | 54.7 | 68.3 | 82.0 | 96.0 | 109.4 | 136.7 |
| 80 | 10.7 | 54.7 | 73.0 | 91.2 | 109.4 | 128.0 | 146.0 | 182.4 |
| 120 | 16.1 | 82.0 | 109.3 | 136.7 | 164.0 | 190.0 | 218.7 | 273.3 |
| 200 | 26.8 | 136.7 | 182.2 | 227.8 | 273.4 | 319.0 | 364.5 | 455.6 |
| 240 | 32.2 | 164.0 | 218.7 | 273.4 | 328.0 | 383.0 | 437.4 | 546.7 |
| 400 | 53.6 | 273.4 | 364.5 | 455.6 | 546.7 | 637.0 | 729.0 | 911.2 |
| 660 | 88.4 | 451.0 | 601.4 | 751.7 | 902.1 | 1052.0 | 1202.8 | 1503.4 |
| 1060 | 142.0 | 724.4 | 965.9 | 1207.3 | 1448.8 | 1690.0 | 1931.7 | 2414.5 |
| 1600 | 214.4 | 1093.4 | 1457.9 | 1822.4 | 2186.9 | 2551.0 | 2915.8 | 3644.8 |
Capacities at other pressures are exactly in proportion. Example: At 200 lbs. pressure the capacity of a given size tank is exactly double the capacity at 100 lbs. pressure.
Air Tool Consumption Guide
These tools are rated based upon typical on load performance. Always check tool manufacturers’ specifications. This chart is based on averages and should not be considered accurate for any Particular brand of tool.
| Tool Description | Operating PSI | Use factor | CFM consumption |
| 3/8” air ratchet | 90 | 25% | 2.5 |
| 1/2” air ratchet | 90 | 25% | 4 |
| 1/4” impact wrench | 90 | 25% | 4 |
| 3/8” impact wrench | 90 | 25% | 5 |
| 1/2” impact wrench | 90 | 25% | 8 |
| 3/4” impact wrench | 90 | 25% | 9 |
| 1” impact wrench | 90 | 25% | 11 |
| 1-1/4” impact wrench | 90 | 25% | 14 |
| Air hammer | 90 | 25% | 3 |
| 6” dual action sander | 90 | 100% | 12 |
| Inline body file | 90 | 100% | 18 |
| 6” grinder | 90 | 100% | 18 |
| Body buffer | 90 | 100% | 18 |
| Die grinder | 90 | 100% | 16 |
| Cut off wheel | 90 | 100% | 16 |
| Rivet gun | 90 | 16 rivets | 4 |
| Roofing nail gun | 90 | 16 nails | 1.3 |
| Finish nail gun | 90 | 16 nails | 1.3 |
| Framing nail gun | 90 | 16 nails | 2.2 |
| Paint Gun (touch up) | 90 | 50% | 4 |
| Paint Gun (production | 90 | 50% | 8 |
Table Conversion Chart
(Minutes to Decimal Hours)
| Minutes | Decimal Hours | Minutes | Decimal Hours | Minutes | Decimal Hours |
| 1 | .02 | 21 | .35 | 41 | .68 |
| 2 | .03 | 22 | .37 | 42 | .70 |
| 3 | .05 | 23 | .38 | 43 | .72 |
| 4 | .07 | 24 | .40 | 44 | .73 |
| 5 | .08 | 25 | .42 | 45 | .75 |
| 6 | .10 | 26 | .43 | 46 | .77 |
| 7 | .12 | 27 | .45 | 47 | .78 |
| 8 | .13 | 28 | .47 | 48 | .80 |
| 9 | .15 | 29 | .48 | 49 | .82 |
| 10 | .17 | 30 | .50 | 50 | .83 |
| 11 | .18 | 31 | .52 | 51 | .85 |
| 12 | .20 | 32 | .53 | 52 | .87 |
| 13 | .22 | 33 | .55 | 53 | .88 |
| 14 | .23 | 34 | .57 | 54 | .90 |
| 15 | .25 | 35 | .58 | 55 | .92 |
| 16 | .27 | 36 | .60 | 56 | .93 |
| 17 | .28 | 37 | .62 | 57 | .95 |
| 18 | .30 | 38 | .63 | 58 | .97 |
| 19 | .32 | 39 | .65 | 59 | .98 |
| 20 | .33 | 40 | .67 | 60 | 1.0 |
Useful Formulas:
| Formula | To Find | |
| Motor pulley O.D. * motor RPM / Pump RPM Pump flywheel O.D. | = | Pump RPM |
| Pump flywheel O.D. X pump RPM / Motor RPM | = | Motor Pulley O.D. |
| Pump flywheel O.D. X pump RPM / Motor Pulley O.D. | = | Motor RPM |
Air Compressor Sizing Guide- CFM Per Employee
| Application | Piston | Rotary |
| Auto Mechanic | 6 | 4 |
| Truck Mechanic | 9 | 6 |
| Body Shop | 12 | 8 |