UR8 Long Collaborative Robotic Arm (Manipulator)
Longer armspan, smaller footprint—no compromises
UR8 Long Specification Specifications
The UR8 Long features a compact and lightweight design with a working radius of 1750 millimeters, making it ideal for welding, pick-and-place, and quality inspection, performing excellently in applications requiring precise linear motion and high-speed acceleration. With advanced joint structures and precise torque control, it is ideal for tasks that require extremely high working radius and precision.
Build precisely to expand your coverage and optimize every cycle
The UR8 Long enables seamless torch control, enabling cleaner welding, less grinding, and less rework, thereby saving time and consumables in the manufacturing workshop. It can handle repetitive and ergonomically unfriendly welds, helping skilled welders focus on higher-value tasks while alleviating the impact of labor shortages. The UR8 Long combines long range, compact design, and flexible collaboration, making it widely used across various industries. From pick-and-place operations in compact body-in-white structures to transporting subcomponents with unmatched speed and precision, the UR8 Long has proven its value in automotive and other fields—providing automation services where it's needed.
Practical application shots
Technical diagram
Load curve and footprint.
Exclusive highlights of the UR8 Long
The native safety interface of the tool flange is specially designed for partners building hand-guided or teaching end effectors, directly integrating the UR security architecture without external security modules or custom wiring.
UR Series Collaborative Robots · Series technical features
Designed for applications requiring higher loads, longer arm reaches, faster cycle times, and enhanced environmental protection, it is suitable for heavy-duty collaborative scenarios such as machine tool handling, material handling, and palletizing, while maintaining collaboration capabilities and easy integration.
The UR series geometries, combined with updated joint structures, enable robots to lift heavy payloads at speeds typically found in traditional industrial robots, freeing skilled labor from repetitive heavy tasks and allowing them to focus on higher-value tasks.
With IP65 and cleanroom certification, the UR series can be used in a wider range of environments, including harsh conditions or those with strict cleanliness standards, and can be deployed even in regulated environments.
The new joint design uses fewer but higher-quality components, reducing complexity and improving durability, providing stronger and more efficient joints with lower failure risks and years of resistance to demanding repetitive tasks.
PolyScope software is enhanced with advanced algorithms, handling heavier payloads while maintaining Austra's renowned collaborative safety standards, making programming, deployment, and management straightforward.
Shared advantages
For untrained operators, the programming process for ready-to-use collaborative robots—from unpacking, installation, to completing the first simple task—usually takes less than an hour.
Collaborative robots occupy a small footprint and are ideal for performing automated tasks within existing production spaces, where space is often limited and space utilization is ideal.
After automating tasks, each task can run autonomously without the need for continuous employee monitoring. In addition, Universal Silicon collaborative robots are more energy-efficient than traditional industrial robots.
All Universal collaborative robots feature built-in safety features, including force sensing technology and collision detection, allowing them to work alongside employees without safety barriers or guardrails, boosting productivity and creating a safe working environment.
Contents of the kit
Standard orders include a robotic arm, control box, 3PE teach pendant (with integrated 3-speed safety enable device), a power cable, a cable connecting the robotic arm and control box, and documentation. Application kits or other options are not included in the standard packaging and must be ordered separately.
A default 3-speed safety enabler (3PE teach pendant) is included, featuring industry-leading PolyScope software for controlling collaborative robots and ensuring high safety when working near them.
The standard control box weighs only 12 kilograms, can be equipped with a teach pendant, and is easy to store, suitable for any environment. The controller serves as a centralized hub for power, safety functions, and communication, providing a compact and efficient solution for system operation.
In addition to the standard warranty, access to the myUR customer portal for 24×7 technical support. It is recommended to enroll in the core training courses at Universal Academy, fully leveraging the capabilities of collaborative robots.
Applicable industries
Typical applications of this model in the following industries (click to view industry solutions).
Long reach detection and material box gripping, accessible to deep containers and extended conveyor belts.
Conduct welding and inspection deep into the workstation, efficiently covering a larger work area.
Extended arm span welding and inspection enable precise linear movement on large workpieces.
Supports advanced welding, inspection, and sports training and experiments.
UR8 Long Application Scenarios
This model is commonly used in the following applications.
Using collaborative robots to improve the efficiency, consistency, and reliability of palletizing operations.
View details → Machine careCollaborative robots handle loading, unloading, and monitoring operations for CNC, injection molding machines, and other equipment.
View details → Arc weldingCollaborative robots deliver consistent, high-quality, repeatable welds in welding tasks.
View details → DispensingProvides precise and repeatable fluid control in scenarios such as dispensing, laminating, and gluing.
View details → Grinding and polishingAutomating surface treatment operations improves consistency and protects operator safety.
View details → Material handlingAchieve stable and flexible material flow during component handling and loading/unloading.
View details → Subtractive manufacturingAchieve precise force control and consistency in processes such as deburring, milling, and trimming.
View details → Quality inspectionAutomated inspection, measurement, and quality analysis are completed in conjunction with vision systems.
View details → AssemblyAchieve repeatable and precise component assembly and positioning on the assembly line.
View details →Unleash the full potential of your robotics team
By integrating your robot with our fully connected platform, you will be able to boost productivity, minimize downtime, and achieve efficient device group management—no matter where you are, you can conveniently accomplish all of this in the office.
Make the most of your robot
The academy provides a series of step-by-step programming examples and tutorials for troubleshooting and repair tasks.
Learn how to set up the tool center point (TCP) and how to properly adjust payload and center of gravity.
Watch the video → Safety planeLearn how to create and configure the safety plane to prevent robots from moving outside the safe plane in normal or reduced mode, and can also trigger the reduction mode.
Watch the video → More informationVisit Universal Robots Academy to browse our popular topics and resource catalog to learn key programming points for Universal Robots.
Watch the video → Ensuring ultra-long uptimeWith Universal Care Services, you can rest assured that our commitment to excellence ensures ultra-long uptime through 24×7 support, remote connectivity, and on-site on-site service (for rapid faults/repairs).
Watch the video →Typical application scenarios
Common application processes for this model (click to view process details):
UR Series Collaborative Robots · Other models in the same series
Compare load and reach to choose the model that best suits your process.
UR8 Long model positioning and working condition adaptation
UR8 Long It belongs to the Universal collaborative robot model, with a rated load of 8kg, a motion radius of 1750mm, and a repeatability of ±0.08mm. Universal's technical foundation is that it is a pioneer of collaborative robots, with the richest UR+ certification ecosystem and industry benchmarks for deployment and redeployment efficiency; The control platform is the UR control box (CB3 / e-Series), and the program ecosystem is Polyscope graphical programming + URScript.
From the perspective of working condition adaptation, typical applications for light loads (8kg) positioning are:Machine tool loading and unloading, 3C assembly, inspection, and handling of small and medium-sized partsCommon application processes for this model include material handling and quality inspection. The long reach (1750mm) covers multiple stations and large pallets, reducing robot movement or coordination with ground track expansion. ± 0.08mm repeatability meets handling and palletizing conditions; For precision assembly applications, it is recommended to use visual guidance for a closed-loop position. The end fixture is counted as a load from the most important point—the total of gripper + workpiece + sensor should not exceed 80% of the rated value. Workpieces with high inertia (long rod/uneven load) should be checked separately.
| Parameters | Engineering interpretation and usage recommendations |
|---|---|
| Rated load 8kg | It is recommended to reserve a load margin of 20%–30%; Verification is made by combining end self-weight + workpiece + imbalanced load inertia, especially sensitive to high-speed conditions |
| Movement radius: 1750mm | Determine the radius of the workcell layout: bins, tooling, and fences are bounded by maximum arm span + safety distance; Verify the accessibility of each pick-and-place point during cross-station service |
| Repeatability: ±0.08mm | Repeatability ≠ absolute accuracy: Precision assembly requires external measurement closed-loop or visual guidance; Long-term accuracy trends rely on annual retest management |
| Main body weight: 44.7kg | Installation base and foundation load-bearing check based on weight + dynamic load; Floor slab installation requires structural calculation, with heavy-duty models serving as independent foundations |
| Controller: UR control box (CB3 / e-Series) | Decide on the process ecosystem, spare parts channels, and second-hand residual value; Currently, spare parts channels are smooth, and repair and upgrade paths are mature |
Control systems and common failure modes
The UR control box (CB3 / e-Series) controller for the UR8 Long uses a programming language and development environment of Polyscope graphical programming + URScript. Maintenance of this generation of control platforms focuses on three basic components: power, storage, and cooling—most "sudden downtime" can be detected in advance when preventive maintenance is in place.
| Failure mode | Typical performance | Disposal recommendations |
|---|---|---|
| Joint fault code | Joint fault codes (overheat/overcurrent, often related to collision history or high load rate) | Included as a mandatory inspection item for annual maintenance, with spare parts stocked in advance |
| Power box | Power supply failure | Initial interpretation of alarm codes by reference with manuals, remote diagnosis allows for early positioning |
| The teach pendant screen is aging with touch | The teach pendant screen is aging with touch | Daily inspection coverage, with abnormal trends (abnormal noises/temperature rise/errors) recorded |
| Terminal tool communication malfunction | Terminal tool communication abnormalities (UR+ third-party inconsistency) | Quarterly dust removal maintenance and cabinet temperature monitoring |
| Maintenance projects | Cycle recommendations | Key points |
|---|---|---|
| Joint health is regularly checked using official diagnostic tools | Periodically | Joint health is regularly checked using official diagnostic tools |
| Power box cooling and input voltage management | According to the manufacturer's manual cycle | Power box cooling and input voltage management |
| Program backup and version management | According to the manufacturer's manual cycle | Program backup and version management |
| Cable and drag chain inspection | every six months | Insulation, shielding, and bending radius inspection of power and encoder lines, as well as wear of cables inside the drag chain, are the main causes of intermittent faults |
| Zero point and accuracy retest | Every year | Repeatability measured by dial gauges or laser trackers, drift trend digitization—accuracy degradation can be seen six months in advance |
| Control cabinet dust removal and fans | Every quarter | Filter cleaning, fan speed and noise checks, cabinet temperature recording; Dust environments shorten the cycle |
Henghuan's service capabilities for UR8 Long
This site is a third-party robotics technology service provider. The eight major business supports related to UR8 Long are as follows (listed by service frequency for each model):
- Maintenance and repair: For on-site diagnostics, board-level maintenance, and annual maintenance contracts for UR8 Long—including regular readings of joint health with official diagnostic tools—we follow SOPs and respond to Sichuan-Chongqing on the same day.
- Used & in-stock robot sales: There is a large circulation of second-hand products but refurbished parts are mixed in. Purchasers must check joint serial numbers and repair history. We provide full joint inspection reports; The UR8 Long or equivalent models in the inventory come with a full-function test report and a 12-month warranty.
- Sales of new industrial robots: When adding new production lines or replacing entire batches, we conduct cross-brand selection comparisons based on process requirements (including models of the same class as Universal Universal), and provide configuration and pricing plans.
- Applied technology services: Process programming, trajectory optimization, cycle tap potential, and formula management for UR8 Long, with targeted commissioning according to material handling and quality inspection conditions.
- Research and development of automation equipment: Custom fixture ends, peripheral tooling, and safety fences for UR8 Long, with interfaces designed according to Universal flange and IO standards.
- Robot rental: For short-term capacity or process validation periods, UR8 Long equivalent in-stock models can be rented, including transportation, installation, and commissioning, with flexible rental periods and flexible options for transfer.
Common issues with this device
Is it easy to find UR8 Long spare parts?
Universal International's spare parts channels for this generation are smooth; we have in-stock or short-cycle channels for standard parts such as drivers, power modules, batteries, and teach pendant components; Joint health is monitored regularly with official diagnostic tools, and consumables are recommended to be configured according to the annual maintenance contract.
With a nominal load of 8kg, how much weight can it actually handle?
The rated load is the static load limit of the flange surface. In actual selection, three factors must be considered: the self-weight of the end fixture (vacuum suction cup groups or grippers often account for 2–5kg), the inertia generated by the workpiece offload (checked according to the inertia ratio when the center of gravity deviates from the flange center), and the dynamic load during high-speed movement. The conventional engineering practice is to keep the "end + workpiece" within 70%–80% of the rated value to ensure cycle time and service life.
If the equipment's accuracy deteriorates after several years of use, how can it be restored?
According to the inspection order: first check whether the zero point is drifting (common after collision or battery depletion), then perform zero calibration; Check the reducer's return error (actual measurement of forward and reverse positioning deviation; if exceeded, disassemble or replace); Then check the installation base fastening and foundation settlement; Finally, trajectory compensation parameter restructuring. Most accuracy issues can be mostly restored after calibration and maintenance, so there is no need to rush into major repairs—we first release the inspection data before deciding on the plan.
Is the used UR8 Long worth buying?
There is a large circulation of second-hand products, but refurbished parts are mixed in. Buyers must check joint serial numbers and repair history. We provide full joint inspection reports. Three essential items for second-hand procurement: comprehensive inspection reports (axial accuracy, driver status, insulation and battery), maintenance history and operating hours, controller generation, and software license integrity. Every used machine we sell comes with inspection records and a 12-month warranty, and we can also accept third-party inspections designated by customers.
Need technical support or procurement for this model?
Whether it's model selection comparison, installation and commissioning, or maintenance of in-use equipment, you can contact Henghuan. Tell us about your processes, loads, and equipment status, and we will provide third-party technical support and solution recommendations.
Contact Henghuan Back to the full series