Price the system that can actually run production.
Why the robot price is not the project price
The robot or manipulator is one part of an operating cell. End-of-arm tooling, mounting, valves and sensors, machine interface, controls, guarding, conveyors or fixtures, design, programming, trials, installation, training and documentation can materially change the total. Omitting them makes two quotations look comparable when their scope and risk are different.
Main cost drivers
| Robot architecture | Pneumatic picker, Cartesian servo, side-entry, six-axis industrial robot or cobot |
|---|---|
| Motion and payload | Complete EOAT load, strokes, reach, orientation, speed and machine size |
| Process scope | Simple drop versus inserts, trimming, inspection, assembly or packing |
| Integration | Machine handshakes, controls, guarding, layout, installation and acceptance |
| Product range | Number of formats, recipe control, quick-change tooling and validation |
Build a conservative benefit case
Potential benefit may come from redeploying repetitive operator time, reducing dropped or damaged components, controlling cavity separation, avoiding unplanned handling delays, increasing available production hours or combining downstream work. Count only gains that can be linked to the proposed sequence and sustained at the expected product mix.
Simple payback method
Start with total installed capital cost plus internal implementation and planned production-disruption cost. Estimate monthly gross benefit, then subtract extra service, energy, tooling consumables and other operating costs. Simple payback in months is the total net investment divided by the expected monthly net benefit. Use a sensitivity range for shifts, utilisation, scrap and labour assumptions instead of relying on one optimistic result.
Questions every quotation should answer
Confirm what is included, assumed and excluded; the acceptance products and rate; responsibility for machine signals and safety; installation duration; training; spares and support; changeover method; documentation; and what happens when a part, insert or downstream station fails. These details affect operating risk as much as headline capital cost.
Frequently asked questions
How much does an injection moulding robot cost?
There is no responsible fixed figure without the application data. Cost depends on machine size, robot architecture, payload and strokes, EOAT, controls, safeguarding, downstream equipment, installation, trials and documentation. A complete-cell quote is more useful than the arm price alone.
How should robot payback be calculated?
Compare the complete capital and implementation cost with conservative monthly net benefit from labour redeployment, reduced scrap and handling damage, higher available output and avoided downtime, then include ongoing service, energy and consumable costs.
What information is needed for a budget estimate?
Provide the moulding-machine make, model and tonnage; part and sprue details; complete cycle; shifts and annual hours; current operator content; quality losses; required downstream work; layout; and changeover range.