C8-A901S Six-axis robotic arm (manipulator)
Six-axis Robot · Load of 8 kg
C8-A901S specifications
Building on the success of the C4 robot, the Epson C8 robot maintains a key slim linear design and the high performance, high payload, and longer operating distance of the C4 robot. Suitable for various applications requiring high flexibility, high speed, and limited footprint. The Epson C8L long-range 6-axis robot uses power-driven servo technology to deliver the high-performance results customers desire. Additionally, by adopting cutting-edge residual vibration technology—namely, the Epson Quartz Microelectromechanical System—which can sense angular velocity and feed it back to the servo motion system, the C8 series robots can significantly reduce vibrations during movement and during start/stop, making movement smoother and positioning faster.
Model introduction
Building on the success of the C4 robot, the Epson C8 robot maintains a key slim linear design and the high performance, high payload, and longer operating distance of the C4 robot. Suitable for various applications requiring high flexibility, high speed, and limited footprint. The Epson C8L long-range 6-axis robot uses power-driven servo technology to deliver the high-performance results customers desire. Additionally, by adopting cutting-edge residual vibration technology—namely, the Epson Quartz Microelectromechanical System—which can sense angular velocity and feed it back to the servo motion system, the C8 series robots can significantly reduce vibrations during movement and during start/stop, making movement smoother and positioning faster. High performance: high-speed cycle times; Small footprint and light weight; Load capacity up to 8Kg with short cycle times; High repeatability of positioning to meet customer expectations; Residual vibration technology ensures fast movement and positioning. Advantages of slim linear design: small footprint, ensuring efficient utilization of factory space; Lightweight, easy to install ceiling/sidewall and track/sliding installation; The compact wrist provides leading mobility for the fifth joint. Excellent range of motion: a wide first joint (+/-240 degrees) working range (about 30% compared to traditional 6-axis robots); Suitable for loading and unloading in confined or confined spaces
Exclusive highlights of the C8-A901S
High-speed cycle times; Small footprint and light weight; Load capacity up to 8Kg with short cycle times; High repeatability of positioning to meet customer expectations; Aftershock technology ensures rapid movement and positioning
Small footprint ensures efficient utilization of factory space; Lightweight, easy to install ceiling/sidewall and track/sliding installation; The compact wrist provides leading mobility for the fifth joint
Wide first joint (+/-240 degrees) working range (about 30% more than traditional 6-axis robots); Suitable for loading and unloading in confined or confined spaces
Epson RC+ software is at the forefront of the industry in terms of simplicity, ease of use, and saving development time; The RC700-A controller delivers high performance at a lower cost; Integration options optimize system performance and reduce total development time (see the options page for more information); High-performance and fast processing capabilities; Customers can connect their own PCs to the RC700 controller to achieve better performance at a lower cost
Visual guidance; Network connection with RC+ 7.0 API; Device network, fieldbus, Ethernet, IP, EtherCat, CC-Link fieldbus connections; GUI Builder—Convenient for creating GUIs through Epson RC+ robot development environments; Other shaft control parts; Conveyor belt tracking
Automobiles; Medical; Consumer products; Electronic products; Industrial products; Laboratory automation
C / CX Series Six-axis · Compact · Series technical features
The C4/C8 and CX4/CX7 are Epson's compact six-axis robots, with payloads ranging from 3 to 8kg, compact size, and flexible installation, designed for space-constrained applications such as electronic assembly, inspection, and small handling.
Miniaturized body design suitable for space-constrained production lines and internal integration with equipment.
Six degrees of freedom can perform actions that SCARA cannot handle, such as tilting pick-and-place and multi-angle assembly.
Maintaining Epson's cost advantage in six-axis models is suitable for mass deployment.
Typical application scenarios
Common application processes for this model (click to view process details):
C / CX Series Six-axis · Compact · Other models in the same series
Compare load and reach to choose the model that best suits your process.
C8-A901S model positioning and working condition adaptation
C8-A901S Belongs to Epson C / CX series six-axis · A compact industrial robot model with a rated load of 8kg, a motion radius of 4000mm, and a repeatability of ±0.03mm. Epson's technological foundation is SCARA's global market leader: RS/GX/LS series with high speed and precision, SPEL+ development efficiency, and mature vision integration; The control platform is RC700-A, and the program ecosystem is SPEL+ language (BASIC style) + Vision Guide visual.
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 handling and assembly. The extra-long boom (4000mm) is suitable for large workpieces and cross-line services, with attention to rigidity and vibration during large overhanging postures. ± 0.03mm repeatability is the standard level for six-axis industrial robots, covering most working conditions such as welding, handling, palletizing, and loading/unloading. 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: 4000mm | 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: ±0.03mm | Repeatability ≠ absolute accuracy: Precision assembly requires external measurement closed-loop or visual guidance; Long-term accuracy trends rely on annual retest management |
| Number of axes: 6 | Six-axis all-posture capability, the preferred choice for complex trajectory and inclined surface operations |
| Main unit weight: 52kg | 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 RC700-A | 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 RC700-A controller accompanying the C8-A901S features a programming language and development environment of SPEL+ (BASIC style) + Vision Guide for vision. 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 |
|---|---|---|
| SCARA synchronous belt tension attenuation and wear | SCARA Synchronous Belt Tension Attenuation and Wear (Main Cause of Precision Drift) | Included as a mandatory inspection item for annual maintenance, with spare parts stocked in advance |
| The encoder battery is depleted | Encoder battery depleted (loss of origin and calibration data) | Initial interpretation of alarm codes by reference with manuals, remote diagnosis allows for early positioning |
| Driver alarm | Driver alarm (high-speed overcurrent) | Daily inspection coverage, with abnormal trends (abnormal noises/temperature rise/errors) recorded |
| RC controller fan and power supply aging | RC controller fan and power supply aging | Quarterly dust removal maintenance and cabinet temperature monitoring |
| Maintenance projects | Cycle recommendations | Key points |
|---|---|---|
| Timing belt tension adjusted by periodic inspection (SCARA specific item) | By cycle | Timing belt tension adjusted by periodic inspection (SCARA specific item) |
| Annual battery replacement | Year | Battery replacement annually, calibration data backup |
| Guide rails and screw lubrication (LS/GX series) | According to the manufacturer's manual cycle | Guide rails and screw lubrication (LS/GX series) |
| 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 the C8-A901S
This site is a third-party robotics technology service provider. The eight major business supports related to the C8-A901S are as follows (sorted by service frequency of each model):
- Maintenance and repairFor on-site diagnostics, board-level maintenance, and annual maintenance contracts for C8-A901S—such as periodic inspection and adjustment of synchronous belt tension (SCARA unique item), we implemented brand-exclusive items according to SOPs, and Sichuan-Chongqing responded on the same day.
- Used & in-stock robot sales: SCARA has a large second-hand circulation and is the preferred choice for 3C and electronic assembly conditions; Procurement focuses on inspecting belt and guide rail wear; In-house C8-A901S or equivalent models 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 grade as Epson), and provide configuration and pricing plans.
- Applied technology services: Process programming, trajectory optimization, tap time potential, and mold-changing formula management for the C8-A901S, with targeted commissioning according to handling and assembly conditions.
- Research and development of automation equipment: Custom fixture ends, peripheral tooling, and safety barriers for C8-A901S, with interfaces designed according to Epson flange and IO standards.
- Robot rental: For short-term capacity or process validation periods, rental of C8-A901S models in stock equivalent to C8-A901S, including transportation, installation, and commissioning, flexible rental periods with flexible purchase options.
Common issues with this device
Is it easy to find spare parts for the C8-A901S?
Epson: The spare parts channel for this generation is smooth; we have in-stock or short-cycle channels for standard parts such as drivers, power modules, batteries, and teach pendant components; It is recommended to allocate consumables for periodic inspection and adjustment of synchronous belt tension (SCARA specific items) 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 C8-A901S worth buying?
SCARA has a large second-hand circulation and is the preferred choice for 3C and electronic assembly applications; Procurement focuses on checking for belt and guide rail wear. 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.
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