RBW
| Part stock code | Annual production quantity | Manual cycle time (s) | Programming time (s) | Robotic cycle time (s) | Annual manual welding (h) | Annual robotic welding (h) | Annual cycle time difference (h) |
|---|---|---|---|---|---|---|---|
| GG14856 | 1,260 | 540 | 240 | 300 | 189.00 | 105.07 | -83.93 |
| BC15959 | 2,438 | 840 | 80 | 240 | 568.87 | 162.56 | -406.31 |
| BC03459 | 648 | 1200 | 210 | 300 | 216.00 | 54.06 | -161.94 |
| CA00073 | 27,156 | 240 | 11 | 60 | 1,810.40 | 452.60 | -1,357.80 |
| CA00163 | 7,896 | 240 | 22 | 120 | 526.40 | 263.21 | -263.19 |
| RBW system cost (€) | €45,000.00 |
| Working days per year | 237 |
| Shifts per day | 1 |
| Working hours per shift | 8.5 |
| Hourly labor cost (€/h) | €7.65 |
| Number of welders | 1 |
| Amortization period (years) | 8 |
| Electricity price (€/kWh) | 0.06 €/kWh |
| Cobot + welding power consumption (kW/h) | 3.9 kW/h |
| Annual available robot capacity (h) | 2,014.50 h |
| Annual available labor (h) | 2,014.50 h |
| Annual manual labor cost (€) | €15,410.93 |
| Annual amortization cost (€) | €5,625.00 |
| Annual cobot + welding power cost (€) | €242.77 |
| Theoretically required welders | 2 |
| Average productivity increase (%) | 68.7% |
| Robot capacity utilization (%) | 51.5% |
| Annual labor saving (€) | €46,126.35 |
| ROI (years) | 0.98 yr |
When does the investment pay itself back? — Realistic = constant annual saving (linear). Optimistic adds higher productivity and labor-cost inflation. Pessimistic adds slow ramp-up and annual maintenance cost.
Add up to 10 parts. Cycle time, programming time and robotic cycle time are in seconds.
| Part stock code | Annual production quantity | Manual cycle time (s) | Programming time (s) | Robotic cycle time (s) | Annual manual welding (h) | Annual robotic welding (h) | Annual cycle time difference (h) | |
|---|---|---|---|---|---|---|---|---|
| 189.00 | 105.07 | -83.93 | ||||||
| 568.87 | 162.56 | -406.31 | ||||||
| 216.00 | 54.06 | -161.94 | ||||||
| 1,810.40 | 452.60 | -1,357.80 | ||||||
| 526.40 | 263.21 | -263.19 |
Annual available robot capacity (h)
2,014.50
Annual available labor (h)
2,014.50
Annual manual labor cost (€)
€15,410.93
Annual amortization cost (€)
€5,625.00
Annual cobot + welding power cost (€)
€242.77
Theoretically required welders
2
Average productivity increase (%)
68.7%
Robot capacity utilization (%)
51.5%
When does the investment pay itself back? — Realistic = constant annual saving (linear). Optimistic adds higher productivity and labor-cost inflation. Pessimistic adds slow ramp-up and annual maintenance cost.