What changes between five and ten seconds?
Using those published figures, the repeating-minute arithmetic is straightforward:
| Trigger time each minute | Average demand | Demand ÷ pump rating |
|---|---|---|
| 5 seconds | 22 × 5 ÷ 60 = 1.83 CFM | About 70.5% |
| 10 seconds | 22 × 10 ÷ 60 = 3.67 CFM | About 141% |
| 60 seconds | 22 CFM | About 846% |
The five-second example is below the pump rating before duty limits are applied. It does not prove the compressor can maintain pressure during the burst. The ten-second example already uses more air on average than the stated delivery point supplies. Repeating that schedule depletes stored air in this simplified balance.
A manual that permits only 50% motor-on time adds another limit: a 70.5% estimated pump share does not fit that allowance. Confirm the observation period and continuous-run limits for your compressor type; a percentage by itself is incomplete.
Why a higher tank pressure is not the whole answer
The DWFP55126’s published maximum pressure is 165 PSI. That is tank storage pressure, not a direction to feed 165 PSI into a wrench. The regulator must deliver the tool’s specified working pressure, and pressure will fall along the hose, couplers and regulator when air moves.
A larger receiver can extend a short burst over the same usable pressure interval. It cannot create sustained pump capacity. Use the stored-air guide to understand that distinction, and the fill-time calculator to explore an explicitly assumed refill flow.
Check the job before buying a larger compressor
- Read the exact impact model’s at-load consumption and operating pressure. A generic “half-inch impact” rating is not enough.
- Check the compressor delivery at that pressure, its permitted applications and its motor duty instructions.
- Inspect the hose inside diameter, regulator and couplers. The 231C source specifies a minimum 3/8-inch hose; matching inlet thread size does not establish adequate flow.
- Observe working pressure during a normal burst. Stop and let the compressor recover within its manual limits when the supply cannot keep up.
This check does not predict breakaway torque or guarantee that a particular fastener will loosen. Review the 231C model profile and hose sizing guide for the separate specifications.
Common questions
Does a six-gallon tank guarantee enough air for lug nuts?
No. The pump rating, wrench, hose, fastener condition and working schedule all matter. This calculator estimates an air balance; it does not certify a torque outcome.
Can I enter the wrench’s 4.2 CFM average?
Not as trigger-on consumption. That would apply your trigger schedule to an already averaged figure with an unspecified schedule. Use confirmed at-load demand or leave it unknown.
Would an auxiliary tank fix the shortfall?
Extra approved storage changes the available buffer and refill time. It does not raise pump delivery. Verify the complete installation with the equipment instructions before changing it.