ER400-3700 Six-axis robotic arm (manipulator)
High-Load Six-Axis Robot · Load capacity 400kg · Reach: 3673mm
ER400-3700 Specifications
ER400-3700 heavy-load six-axis robot, 400kg load, 3673mm arm span, 6-axis, equipped with M-type control cabinet.
Model introduction
ER400-3700 · Load capacity 400kg · Reach: 3673mm · 6-axis · M-type control cabinet. Parameters are extracted from the product selection table on the Efft official website.
ER heavy-load/load-bearing robots · Series technical features
Load 150-700kg · Spot welding and heavy-duty handling
Official website classifies "heavy load-heavy load" ER210/280/360/700-2700~3100, maximum 700kg.
EFORT, formerly Chery Equipment, developed its first self-developed 165kg heavy-duty spot welding robot (according to Shanghai Stock Exchange listing report).
All models come with M-type control cabinets (official selection list).
The ER400-3700 has a reach of 3673mm, and the ER100P-3900 reaches 3900mm (official website).
Typical application scenarios
Common application processes for this model (click to view process details):
ER heavy-load/load-bearing robots · Other models in the same series
Compare load and reach to choose the model that best suits your process.
ER400-3700 model positioning and working condition adaptation
ER400-3700 It belongs to the Efft ER heavy-load/load-powered industrial robot model, with a rated load of 400kg and a motion radius of 3673mm. EFORT's technical foundation is the acquisition of Italy's EVOLUT (integrated) and WFC (woodworking), with mature spraying and general handling process packages; The control platform is an M-type control cabinet, and the program ecosystem consists of graphical programming + process package calling.
From the perspective of working condition adaptation, typical applications for heavy-duty (400kg) positioning are:Vehicle body handling, large casting processing, building materials and heavy palletizingCommon application processes for this model include spot welding, handling, loading and unloading, and palletizing. The extra-long reach (3673mm) is suitable for large workpieces and cross-line services, with attention to stiffness and vibration during large overhang postures. For heavy-duty models, the foundation is poured according to the manufacturer's drawings and settlement observation is conducted, with hoisting and maintenance space reserved during the layout phase.
| Parameters | Engineering interpretation and usage recommendations |
|---|---|
| Rated load capacity: 400kg | 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 3673mm | 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 |
| Number of axes: 6 | Six-axis all-posture capability, the preferred choice for complex trajectory and inclined surface operations |
| Controller: M-type control cabinet | 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 M-type control cabinet controller compatible with the ER400-3700 features a programming language and development environment of graphical programming + process package calls. 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 |
|---|---|---|
| Driver alarm and encoder abnormality | Driver alarm and encoder abnormality | Included as a mandatory inspection item for annual maintenance, with spare parts stocked in advance |
| Explosion-proof parts of spraying machine models are aging | Explosion-proof parts of spraying models aged (sealing and grounding) | Initial interpretation of alarm codes by reference with manuals, remote diagnosis allows for early positioning |
| The teach pendant malfunctioned | The teach pendant malfunctioned | Daily inspection coverage, with abnormal trends (abnormal noises/temperature rise/errors) recorded |
| Communication between IO and bus is abnormal | Communication between IO and bus is abnormal | Quarterly dust removal maintenance and cabinet temperature monitoring |
| Maintenance projects | Cycle recommendations | Key points |
|---|---|---|
| Spray explosion-proof models undergo annual inspection according to explosion-proof regulations (grounding, sealing, certification effectiveness). | According to the manufacturer's manual cycle | Spray explosion-proof models undergo annual inspection according to explosion-proof regulations (grounding, sealing, certification effectiveness). |
| Routine management of batteries and lubrication | According to the manufacturer's manual cycle | Routine management of batteries and lubrication |
| Program parameters are backed up regularly | Periodically | Program parameters are backed up regularly |
| 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 ER400-3700
This site is a third-party robotics technology service provider. The ER400-3700 supports the following eight major business services (sorted by service frequency for each model):
- Maintenance and repair: For the ER400-3700 on-site diagnosis, board-level maintenance, and annual maintenance contract—sprayed explosion-proof models are inspected according to explosion-proof regulations (grounding, sealing, certification effectiveness), etc., we follow SOP and respond to Sichuan-Chongqing on the same day.
- Used & in-stock robot sales: Second-hand circulation is increasing, and the procurement of spray painting models requires verification of explosion-proof certification documents; The ER400-3700 or equivalent models in the warehouse come with a comprehensive functional test report and a 12-month warranty.
- Sales of new industrial robots: When adding new production lines or replacing batches, we conduct cross-brand selection comparisons based on process requirements (including models of the same class as EFORT), and provide configuration and pricing plans.
- Applied technology services: Process programming, trajectory optimization, cycle time tapping, and formula management for ER400-3700, with targeted commissioning for spot welding, handling of materials, loading and unloading, and palletizing conditions.
- Research and development of automation equipment: Custom fixture ends, peripheral tooling, and safety fences for ER400-3700, with interfaces designed according to EFT flange and IO standards.
- Robot rental: For short-term capacity or process validation periods, ER400-3700 equivalent models in stock can be rented, including transportation, installation, and commissioning, with flexible rental terms and repurchasing.
Common issues with this device
Is it easy to find spare parts for the ER400-3700?
EFORT: 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; For sprayed explosion-proof models, it is recommended to configure consumables for annual inspection (grounding, sealing, certification effectiveness) according to explosion-proof regulations according to the annual maintenance contract.
With a nominal load of 400kg, how much 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 ER400-3700 worth buying?
With the increasing circulation of second-hand products, it is necessary to verify explosion-proof certification documents when purchasing spray painting models. 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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