# How to Buy a Used Cobot or Industrial Robot in the UK: The Complete 2025 Guide
A used collaborative robot arm is not a consumer purchase. It is a capital equipment decision with integration costs, safety obligations, and operational implications that do not apply to any other category on this platform. This guide is written for the SME owner, operations manager, or procurement officer who is evaluating secondhand cobots seriously — not for the enthusiast who wants a robot arm on a workbench.
That said, the used cobot market in 2025 offers genuine value that the new market cannot match. A Universal Robots UR5e — the most widely deployed collaborative arm in the world — costs approximately £28,000 new. A used UR5e at 60,000 cycles, with a verifiable service history from a known integrator and a recent calibration certificate, is available for £12,000 to £16,000. That saving is real and, with proper due diligence, the risk is manageable.
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Understanding what you are actually buying
A "cobot" listing typically refers to the robot arm and controller only. The following items are separate line items in any real deployment:
End effector — the tool at the end of the arm: a gripper, suction cup, welding torch, screwdriving tool, or camera. End effectors range from £200 (basic parallel gripper) to £15,000 (collaborative bin-picking vision system). Confirm whether the listing includes an end effector and whether it is compatible with your application.
Mounting and fixturing — the structure that holds the robot and the workpiece in the correct relationship. Standard table-mount deployments are straightforward; ceiling-mount, wall-mount, and mobile-platform deployments add cost and complexity.
Safety integration — even cobots rated for collaborative operation without guarding must be risk-assessed for your specific application. The robot arm's CE/UKCA marking covers the arm in isolation. The integrated machine (arm + end effector + application + workspace) requires its own risk assessment under the Machinery Directive (or UK Machinery Regulations 2008). In many applications, some additional guarding, light curtains, or area scanners are still required even with a cobot.
Programming and commissioning — someone has to write the application program, test it, and validate it against your production requirements. This is where most integration projects run over budget. Budget honestly.
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The five things to check before you buy
1. Cycle count and service history
Cycle count is the primary wear indicator on a robot arm. Universal Robots arms log their total joint cycles internally; this is accessible through the PolyScope interface (Settings → System → Robot).
What is a reasonable used cycle count? Context matters:
- A UR5e at 80,000 cycles in a pick-and-place application at 2 kg payload, well within rated limits, is a different machine from one at 80,000 cycles running at maximum payload and speed in a welding application.
- Universal Robots rates its joints for multi-million cycles at rated conditions; the first service interval (joint lubrication) is typically at 350 hours. A robot with documented oil changes and maintenance at the correct intervals is in a different category from one with no service records.
Ask for:
- The robot's total runtime hours (logged in PolyScope)
- The cycle count per joint (accessible via PolyScope or UR support tools)
- The service log: oil changes, any joint replacements, calibration certificates
- Whether the robot has been involved in any collision events (collisions cause protective stops; repeated unresolved collisions can indicate a programming or application design issue)
A cobot with no service history is a cobot whose condition you cannot assess. The saving relative to a documented unit is rarely worth the uncertainty.
2. Joint calibration
A used cobot should have a current calibration certificate from an authorised service technician. Calibration verifies that the robot's joint positions match the expected kinematic model — that when the arm says it is at position X, it is actually within the specified tolerance of position X.
Uncalibrated robots produce positional errors that may be acceptable for low-precision applications and catastrophic for precision assembly or inspection. If the listing does not include a recent calibration certificate, budget £500 to £1,200 for a calibration service before deployment.
Some integrators include a calibration service as part of their resale package. This is a meaningful value-add — a robot sold with a recent calibration and service sign-off carries less deployment risk than one sold as-is.
3. Safety certifications and CE/UKCA status
The robot arm's original CE marking (pre-January 2025 market placements) or UKCA marking covers the arm in isolation. Verify that:
- The original CE declaration of conformity is available (the seller should be able to provide this document)
- The robot has not been materially modified from its certified specification (custom end effectors and added sensors are normal; structural modifications to the arm or controller are not)
- The controller is the correct version for the software version installed (some older controllers cannot run current software)
For your integrated machine: you are responsible for the risk assessment and conformity assessment of the complete integrated system. This is not optional. Deploy a cobot in a commercial production environment without the correct documentation and you are exposed to enforcement action from the HSE and personal liability in the event of an incident.
If you do not have the internal expertise for this assessment, a competent UK integrator can perform it for £2,000 to £6,000 depending on complexity. This cost is not avoidable — budget it from the start.
4. Software and firmware version
Universal Robots cobots run PolyScope. Versions are backward compatible (programs from older PolyScope versions run on current versions) but not forward compatible (a program written on PolyScope 5.12 will not run on an older controller with PolyScope 3.x). If you are buying a used robot to run an existing program or integrate with existing UR+ accessories, confirm that the software version is compatible.
FANUC CRX cobots use iHMI — a tablet-based interface. KUKA LBR iisy uses KUKA smartPAD. Each platform has its own version landscape; ask for the current version and check against the manufacturer's published compatibility matrix for any accessories or integrations you intend to use.
Software updates are generally available but may require a software subscription renewal (UR charges an annual fee for software access on some versions). Confirm whether the software licence is current and transferable.
5. Physical condition of the arm and cabling
Inspect the robot arm visually under good lighting:
- Check every joint housing for cracks, impact marks, or paint damage that might indicate collision history
- Inspect the cable harness that runs along the outside of the arm: look for chafing, sharp bends, tape repairs, or connector damage
- Check the tool flange (the mounting surface at the end of the arm) for perpendicularity — a damaged tool flange from a collision may not hold an end effector accurately
- Inspect the controller cabinet: check that all connectors are seated correctly, that cooling fans run when powered, and that there are no visible burn marks or corrosion on the circuit boards
A robot that has been deployed professionally in an industrial environment will show minor cosmetic wear; this is normal and expected. Structural damage or DIY cable repairs are different and warrant closer investigation.
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Cobot market overview: which platforms to target
Universal Robots (UR3e / UR5e / UR10e / UR16e)
The dominant platform globally, with the widest integrator support, the largest accessories ecosystem (UR+), and the most extensive community of users, programmes, and documentation. If you need an integrator to help deploy a used cobot, UR is the platform every integrator knows.
UR3e (3 kg payload, 500 mm reach) — bench-top applications, assembly, inspection. Used prices: £7,000 to £11,000. UR5e (5 kg, 850 mm reach) — the most widely deployed. Pick-and-place, palletising, machine tending. Used prices: £12,000 to £17,000. UR10e (10 kg, 1,300 mm reach) — larger workspaces, heavier payloads. Used prices: £17,000 to £25,000. UR16e (16 kg, 900 mm reach) — heavy payload in a compact footprint. Used prices: £20,000 to £28,000.
FANUC CRX-10iA / CRX-25iA
FANUC's collaborative arm series. Excellent build quality, FANUC's renowned reliability record, and zero-programming hand-guided teaching. Strong choice for manufacturers already in the FANUC ecosystem. Used prices for CRX-10iA: £15,000 to £22,000.
KUKA LBR iisy
The KUKA collaborative arm for SME applications. Well-regarded in the automotive supply chain. Strong if you have existing KUKA relationships or are in a sector where KUKA integrators are common. Used prices: £14,000 to £20,000 depending on configuration.
ABB YuMi / GoFa
ABB's collaborative arm range. YuMi is a dual-arm system designed for electronics assembly; GoFa is a single-arm cobot for general applications. Less common in the UK SME market than UR or FANUC but well-supported by ABB's own service network. Used prices: £12,000 to £22,000.
Browse all used cobot and industrial robot listings on Robot AutoTrader.
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Integration: the cost most buyers underestimate
The robot arm is, in many real deployments, the cheapest part of the total project cost. A UR5e at £14,000 used is a saving. A UR5e integration project that comes in at £55,000 total — after end effector, vision system, mounting, safety integration, programming, and commissioning — is the common reality.
A realistic integration budget for an SME cobot deployment includes:
End effector — £500 to £8,000 depending on type (pneumatic gripper vs servo gripper vs vision-guided system) Mounting and fixturing — £800 to £4,000 Vision system (if required) — £3,000 to £12,000 Safety risk assessment and documentation — £2,000 to £6,000 Programming and commissioning — £4,000 to £20,000 Training — £500 to £2,000
On a simple application (structured pick-and-place with fixed product placement, no vision), the low end of these ranges is achievable. On a complex application (vision-guided assembly, multiple product variants, CRM or MES integration), the high end is realistic.
If your total integration budget is £20,000, a used UR3e at £8,000 and £12,000 for integration is the right frame. If your integration budget is £8,000, a cobot deployment may not be economically viable yet regardless of how cheap the arm is.
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UK safety and regulatory requirements
Deploying a cobot in a workplace is governed by several overlapping frameworks:
The Machinery Regulations 2008 (UK) — requires that any machine placed on the GB market or put into service is safe and carries the appropriate conformity marking. A used cobot re-integrated into a new application may need a new conformity assessment.
The Health and Safety at Work Act 1974 and PUWER 1998 — require that all work equipment is suitable for its intended use, properly maintained, and used by adequately trained personnel. This applies to used cobots from day one of deployment.
ISO/TS 15066:2016 — the technical specification for collaborative robot systems. Defines risk assessment methodology for collaborative operation. Not a mandatory standard but widely accepted as the correct technical framework and referenced by HSE guidance.
ISO 10218-1 and -2 — the foundational industrial robot safety standards. Part 1 covers the robot; Part 2 covers the integration. A conforming integration follows these standards.
In practice: engage a UK-based integrator who is familiar with these frameworks or a CE marking consultant before deployment. This is not optional for commercial use. The cost (£2,000 to £6,000 for a typical assessment) is a fraction of the liability exposure from an unassessed deployment.
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UK consumer rights and business purchase considerations
Used cobots sold between businesses are primarily governed by the Sale of Goods Act 1979 and the Supply of Goods and Services Act 1982. Goods must be of satisfactory quality, fit for purpose, and as described. The Consumer Rights Act 2015 applies to business-to-consumer sales; for B2B transactions, the older framework applies, but the practical result for material misrepresentation is similar.
For high-value transactions, commission an independent condition assessment before funds transfer. A qualified robot service engineer can inspect the arm, run diagnostic routines, and produce a written report for £500 to £1,500. On a £15,000 purchase, this is inexpensive insurance.
Request the full technical documentation package: the original CE declaration of conformity, the PolyScope or equivalent software licence, any applicable calibration certificates, and the maintenance log. A seller who cannot produce these documents is selling on trust alone.
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Frequently asked questions
What is a cobot and how is it different from an industrial robot? A cobot (collaborative robot) is designed to work alongside humans without traditional safety caging, using force-torque sensing to stop on contact. Industrial robots require physical guarding. For most SME applications, a cobot is the right choice: more flexible, easier to integrate, and CE-marked for collaborative operation.
What is a cycle count on a cobot, and what is too high? The total number of motion cycles logged internally by the robot arm — equivalent to mileage. Context matters more than the raw number: 200,000 cycles at low payload in a dry environment is different from 200,000 cycles at max payload in a wash-down environment. Service history is the decisive factor.
Do used cobots need CE marking? The arm retains its original CE marking. Your integrated machine (arm + end effector + application) may require a new conformity assessment under the Machinery Regulations 2008. Consult a CE marking specialist before commercial deployment.
What does integration cost for a used cobot? £8,000 to £40,000 depending on application complexity. The robot arm is rarely the largest cost. Budget honestly for end effector, mounting, safety assessment, programming, and commissioning before committing to a purchase.
Which cobots hold their value best? Universal Robots (UR5e in particular) holds value most consistently. FANUC CRX and KUKA LBR iisy are strong alternatives. Cobots from smaller manufacturers face steeper used-market discounts due to limited integrator support.
Can a used cobot be re-programmed for a different application? Yes. Cobots are designed for flexibility. The existing program can be deleted and replaced. Payload and reach specifications cannot be changed — match the arm's rated specifications to your application before purchasing.
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Ready to buy
Browse all used cobot and industrial robot listings on Robot AutoTrader, with verified cycle counts, service history documentation, and prices benchmarked against the market on every listing.
Selling a cobot or industrial robot? The Robot AutoTrader seller guide covers the listing process. For fleet disposals or multi-unit listings, contact us directly.