Used & in-stock robot sales

Second-hand robots are not just "usable enough," but rather "buy with confidence and use reliably." Every piece of equipment shipped from the warehouse undergoes complete inspection and necessary refurbishment, accompanied by inspection reports and warranty terms.

Where does the equipment come from?

The biggest fear for second-hand robots is their unknown origin. Our equipment mainly comes from four types of channels: First, factory production line upgrades, where existing robots with good performance but increased process requirements have been replaced; Second, idle equipment after enterprise relocation, production reduction, or production line relocation; Third, equipment transferred in bulk by the asset disposal party at the time of closure liquidation; Fourth, self-owned equipment recovered after lease expiration. For each unit, we require a source description and equipment number, verify the model and factory serial number on the nameplate to prevent patchwork units, accident-damaged units, and units under undisclosed liens from entering the market. The equipment number is written into the sales contract and inspection report, ensuring traceability of the source—this is both the buyer's guarantee and our own risk control bottom line.

Checklist for each warehouse inspection item

After the equipment is stored, it is not immediately shelved but first goes through the complete inspection process. Inspection of appearance and mechanical parts: Check for impact deformation of the body, condition of paint and castings, check for leakage in shaft seals, reducer oil level and quality, and check if balance cylinder pressure is normal; Motion section inspection: manually operate each axis for full-stroke operation, listen for abnormal noise, binding, or crawling, measure backlash and repeatability of each shaft; Electrical section inspection: controller power-on self-check to see if it passes, alarm history records for major faults, servo motor three-phase current and insulation, encoder feedback stability, teach pendant buttons and touch functions, I/O and communication ports; Safety inspection: Emergency stop circuit, safety door signals, soft and hard limits, and whether the brake action is reliable. Items that pass inspection proceed to the refurbishment stage; those that do not pass are directly returned or dismantled as spare parts, and are never mixed into the complete machine sales. The table below shows the specific test items and criteria.

Color grading and refurbishment standards

We classify used robots into three levels: A, B, and C based on actual test conditions. The grading results are recorded in the inspection report, and the price is directly linked to the warranty period. Class A refers to equipment with a short usage time, meeting accuracy standards, and basically undamaged appearance. Refurbishment mainly involves cleaning and maintenance and functional retesting; Grade B refers to equipment with long usage time or localized wear but in good condition of core components, which will have seals, cables, and wear bearings replaced and repainted; Class C refers to equipment that can operate normally but has obvious wear or high cumulative working hours, suitable for handling and palletizing conditions where precision and appearance are not required, offering the greatest price advantage. Regardless of the level, continuous roll-up runs must be completed before delivery; non-compliant units will not be shipped out of the warehouse. Grading is not up to us; the test report includes actual test data, and you can also commission a third party for re-inspection.

What will you get upon delivery?

One complete machine (including the main unit, controller, teach pendant, power cable, and main unit cable), one written inspection report (including actual accuracy measurement data for each axis, alarm history, replacement parts list), one warranty card, and a brief operation and maintenance description. If installation commissioning, program instruction, operator training, or lifting are required, these are optional and should be separately specified in the contract for costs and responsibilities. Before the equipment leaves the factory, we record the zero marks, axle posture, and wiring markings and photograph them for archiving. When installed on site, you can directly reset them to reduce on-site commissioning time. It should be noted that second-hand robots usually do not include the original process program or fixtures. Program development requires reteaching based on your actual workpiece, which we can take on separately.

The real trade-off between second-hand and new machines

We don't shy away from this comparison, because choosing the wrong one is the biggest waste. The advantages of the new machine include: OEM warranty on the entire machine, full VAT invoice issued, the latest controller platform and optional features can be specified, and it is suitable for projects that need to be counted as fixed assets or apply for technical upgrade subsidies. The advantages of used robots are: prices usually only a fraction of new ones, in-stock can be delivered quickly, discontinued older models can only be replenished through second-hand channels, and for handling and palletizing tasks where precision is not strictly demanding, overperforming new machines are not cost-effective. Conversely, used robots have real shortcomings: warranty periods are shorter than new machines, cumulative working hours determine the remaining lifespan, spare parts rely on the dismantled parts market, and manufacturers cannot enjoy free software upgrades and training. Our recommendation is to select based on working conditions: high-precision assembly, welding, gluing, and other workstations that require high repeatability and trajectory stability, prioritizing new machines or second-hand Class A; For tasks like loading and unloading, palletizing, and handling, B-grade second-hand offers better value for money.