| Press Capacity | Match the rated force with the forming, stamping, bending, or compression load required by the application. | Specify working force, stroke, daylight, table size, and a reasonable engineering margin based on the process calculation. | Load calculation, technical drawing, pressure and force data, and a sample-process trial. | Capacity is stated without stroke, speed, working area, or allowable duty cycle. | 15% |
| Accuracy and Repeatability | Confirm whether the machine can maintain the required position, pressure, and repeatability during production. | Use measured acceptance values for ram position, pressure, speed, and product dimensions rather than general claims. | Factory acceptance test, calibration records, measurement method, and tolerances agreed in the purchase contract. | Only nominal specifications are provided; no test method or tolerance is defined. | 12% |
| Hydraulic System Reliability | Review pump type, valves, filtration, oil cooling, leakage control, and protection against pressure overload. | The hydraulic circuit should include documented pressure protection, suitable filtration, accessible maintenance points, and leak inspection procedures. | Hydraulic schematic, component specifications, oil recommendations, preventive-maintenance schedule, and pressure-test report. | Unidentified valves or pumps, difficult access to filters, persistent leakage, or no maintenance instructions. | 12% |
| Safety and Risk Reduction | Assess guarding, two-hand controls, emergency stops, presence sensing, safe access, and control-system safety functions. | Perform a documented risk assessment using applicable machinery-safety requirements, including ISO 12100 and relevant press-safety standards. | Risk assessment, safety-circuit diagram, validation report, emergency-stop test, and guarding inspection. | Safety devices are optional, bypassable, poorly documented, or excluded from the quoted configuration. | 15% |
| Regulatory Compliance | Identify the legal and technical requirements for the machine’s destination, electrical system, and intended use. | Check applicable requirements such as ISO 12100, ISO 13849-1, IEC 60204-1, and ISO 16092 series where relevant; confirm local-market requirements separately. | Declaration of conformity or incorporation, technical file index, electrical drawings, test reports, manuals, and nameplate information. | A generic certificate is supplied without machine-specific documents or clear scope of application. | 12% |
| Supplier Technical Support | Confirm installation, commissioning, operator training, troubleshooting, and response arrangements. | Define named contacts, support channels, response times, service coverage, and whether remote or on-site assistance is included. | Service-level agreement, commissioning plan, training agenda, escalation process, and service-case references with confidential details removed. | Support is described only as “available” with no response time, scope, or responsible contact. | 10% |
| Spare Parts and Maintainability | Evaluate the availability, interchangeability, identification, and replacement process for wear parts and control components. | Require a parts list with item numbers, specifications, recommended stock levels, lead-time estimates, and approved alternatives where appropriate. | Recommended-spares list, exploded diagrams, parts pricing validity, maintenance intervals, and ordering procedure. | Critical parts are proprietary, unidentified, or unavailable through a documented supply channel. | 10% |
| Warranty and Contract Protection | Check warranty duration, coverage, exclusions, shipping responsibility, labor terms, and remedies for repeated failures. | Specify the warranty period and start date in writing; define coverage for hydraulic, electrical, structural, and control-system defects. | Signed warranty terms, acceptance criteria, defect-report process, and spare-parts replacement conditions. | Warranty exclusions are broad, verbal promises replace contract terms, or acceptance is undefined. | 8% |
| Energy and Operating Cost | Compare motor power, pump-control strategy, idle consumption, cycle time, hydraulic-oil requirements, and maintenance labor. | Use measured energy per production cycle or per operating hour under a defined load profile; do not compare motor nameplate power alone. | Energy-measurement method, cycle-time study, oil and filter schedule, and total-cost-of-ownership estimate. | Energy savings are claimed without test conditions or operating assumptions. | 4% |
| Installation and Lifecycle Value | Consider transport, foundation, utilities, commissioning, upgrades, resale, and expected service life under the planned duty cycle. | Obtain a complete installation requirement: footprint, mass, power supply, hydraulic oil, compressed air if needed, lifting points, and foundation details. | General-arrangement drawing, utility schedule, installation manual, commissioning checklist, and lifecycle-cost model. | Low purchase price but unclear installation costs, undocumented modifications, or no upgrade path. | 2% |