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Dual-Servo Multi-Spindle Drilling & Tapping Machine →Review the published specifications and configuration options against your part drawing before requesting a quote.
Begin with demand the proposed process can actually serve
A sales forecast may contain parts outside the equipment's proposed scope. Build the demand table from eligible part numbers and revisions, then identify which orders use the reviewed route. Do not count unrelated sales growth as machine load. Separate confirmed orders, expected repeat orders and uncertain opportunities so that a buyer can change the assumptions without changing the arithmetic.
This is an original arithmetic worksheet, not an investment recommendation or a statement of BINSING price or output. It extends a single-volume break-even calculation by showing how a change in orders changes the result. All currency amounts below are hypothetical currency units, abbreviated CU. The model assumes a constant product mix, cost difference and annual demand within each scenario.
Define cash assumptions before calculating payback
Assume an initial installed outlay of 90,000 CU. The current route has 4.00 CU of avoidable expenditure per eligible good part; the proposed route has 2.50 CU of replacement variable expenditure per good part. The difference is 1.50 CU. Incremental recurring cash cost is 12,000 CU per year. Reviewed annual capacity is assumed to be 60,000 eligible good parts, independently of the demand scenarios.
The 1.50 CU difference must not contain an allocated salary that continues unchanged, depreciation counted as cash or revenue from unconfirmed sales. Identify exactly which purchases, overtime or outsourced work disappear. Likewise, the 12,000 CU must include only additional recurring cash costs on the chosen comparison boundary. Avoid counting the same maintenance or support cost in both the per-part and annual lines.
Reproduce the calculations and identify the threshold
For each scenario, annual net cash benefit = eligible good parts × 1.50 − 12,000. Simple payback = 90,000 divided by that positive annual benefit. Capacity use = eligible good parts divided by 60,000. Thus the base case gives 40,000 × 1.50 − 12,000 = 48,000 CU, and 90,000 ÷ 48,000 = 1.875 years. These are steady annual comparisons without ramp-up, financing, tax or discounting.
At 8,000 good parts per year, the illustrated annual cash benefit is zero: 8,000 × 1.50 − 12,000 = 0. Below that level it is negative. This is the recurring-cash threshold, not recovery of the initial 90,000 CU. Do not describe 8,000 parts as the volume that pays for the machine. Recovery depends on the cumulative positive benefit across subsequent periods.
Keep spare capacity and recoverable cash in separate columns
The low case leaves 40,000 good parts of theoretical annual capacity unused in this example. That unused capacity has no automatic revenue or cash saving attached to it. It may allow future work, but the work must be commercially and technically available. Conversely, a high-demand case above the assumed capacity cannot use the same formula without accounting for overflow, more shifts or another route.
If demand changes the product mix, recalculate the per-part cost difference and capacity instead of scaling one average indefinitely. Different variants may consume different setup time or tools. A month-by-month schedule is also necessary when delivery peaks matter: an annual total below capacity can still exceed the available hours in a particular month.
Use sensitivity to define the next evidence request
Ask which uncertain input changes the decision most. If the low-demand case is unacceptable, investigate actual repeat-order evidence or a smaller initial scope. If the cost difference drives the result, obtain comparable quotations and measured process data. If capacity is the uncertainty, request a representative trial and production calendar rather than a more precise-looking payback decimal.
Keep a dated assumption sheet with an owner and evidence for each value. Review it when order quantities, product mix or the equipment scope changes. For a real approval, the buyer's finance team should add the relevant timing and financial treatment. This worksheet gives procurement and engineering a shared, reproducible starting point without converting a forecast into a promise.