SN7B-7/0.90 Six-axis robotic arm (manipulator)
Desktop six-axis robot · Load capacity 7kg · Reach: 906mm
SN7B-7/0.90 specifications
SN7B-7/0.90 Desktop six-axis robot, payload 7kg, armspan 906mm.
Model introduction
SN7B-7/0.90 · Load capacity 7kg · Reach: 906mm · 6-axis · Repeatability± 0.02mm · IP67 protection. Parameters are taken from the product page on Siasun's official English website.
SN Series Desktop Robots · Series technical features
Load 4-12kg · Wrist rating is IP67
Officially, it claims to be high performance, easy to maintain, compact structure, and modular design to reduce maintenance costs.
The main unit comes standard with multiple air circuits and signal cables to meet various end fixture needs.
The official page states compatibility with TCP/IP, Modbus TCP, EIP, and Profinet.
The desktop model has wrist protection up to IP67 (official website specs).
Typical application scenarios
Common application processes for this model (click to view process details):
SN Series Desktop Robots · Other models in the same series
Compare load and reach to choose the model that best suits your process.
SN7B-7/0.90 model positioning and working condition adaptation
SN7B-7/0.90 It belongs to the SN series of Siasun Robotics desktop robots, with a rated load of 7kg, a motion radius of 906mm, and repeatability of ±0.02mm. Siasun Robotics' technical foundation is rooted in the Chinese Academy of Sciences, with strong expertise in clean robots and semiconductor equipment, and deep expertise in special robots (vacuum/cleanroom/explosion-proof); The control platform is the SIASUN platform, and the program ecosystem is graphical + script programming.
From the perspective of working condition adaptation, typical applications for light load (7kg) positioning are:Machine tool loading and unloading, 3C assembly, inspection, and handling of small and medium-sized partsCommon application processes for this model include assembly, screw tightening, dispensing, handling, and inspection. The medium reach (906mm) meets the needs of conventional workstations, offering flexible single-station layout. ± 0.02mm repeatability is the standard level for six-axis industrial robots, covering the vast majority of welding operations, handling, palletizing, and loading and unloading operations. 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 7kg | 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: 906mm | 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: ±0.02mm | 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 |
| Protection rating: IP67 | Resistant to dust and washing environments (suitable for food and beverage, casting and grinding stations) |
| Controller: SIASUN Controller (SIASUN platform) | 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 SN7B-7/0.90 is equipped with the SIASUN platform controller, with a programming language and development environment of graphical + script programming. 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 |
|---|---|---|
| Aging of seals in clean machine models | Aging of Cleanroom Seals (Risk of Excessive Particle Limits) | Included as a mandatory inspection item for annual maintenance, with spare parts stocked in advance |
| Driver and power module failure | Driver and power module failure | Initial interpretation of alarm codes by reference with manuals, remote diagnosis allows for early positioning |
| Loss of specialized parts for vacuum environments | Vacuum environment special parts wear (sealing rings, lubrication drying out) | Daily inspection coverage, with abnormal trends (abnormal noises/temperature rise/errors) recorded |
| Faults in the teach pendant and communication cables | Faults in the teach pendant and communication cables | Quarterly dust removal maintenance and cabinet temperature monitoring |
| Maintenance projects | Cycle recommendations | Key points |
|---|---|---|
| Clean machine models are maintained according to cleanroom procedures (tool cleaning, particle retesting). | According to the manufacturer's manual cycle | Clean machine models are maintained according to cleanroom procedures (tool cleaning, particle retesting). |
| Seals must be replaced periodically | By cycle | Seals must be replaced periodically |
| OEM specifications for vacuum chamber-related spare parts | According to the manufacturer's manual cycle | OEM specifications for vacuum chamber-related spare parts |
| 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 SN7B-7/0.90
This site is a third-party robotics technology service provider. The eight major business supports related to SN7B-7/0.90 are as follows (sorted by service frequency for each model):
- Maintenance and repair: For on-site diagnostics, board-level repairs, and annual maintenance contracts for SN7B-7/0.90—clean machine models are maintained according to cleanroom procedures (tool cleaning, particle retesting), etc., we follow SOPs and respond to Sichuan-Chongqing on the same day.
- Used & in-stock robot sales: Cleanrooms and semiconductor equipment are abundant, and third-party maintenance requires cleanliness procedural capabilities—we have corresponding SOPs; In-stock SN7B-7/0.90 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 batches, we conduct cross-brand selection comparisons based on process requirements (including models of the same class as Siasun Robots), and provide configuration and pricing plans.
- Applied technology services:Process programming, trajectory optimization, cycle time potential tapping, and pattern change formula management for SN7B-7/0.90, with targeted commissioning according to assembly, screw tightening, dispensing, handling, and inspection conditions.
- Research and development of automation equipment: Custom fixture ends, peripheral tooling, and safety fences for SN7B-7/0.90, with interfaces designed according to Siasun Robotics flange and IO standards.
- Robot rental: For short-term capacity or process validation periods, SN7B-7/0.90 equivalent models in inventory can be rented, including transportation, installation, and commissioning, with flexible lease periods and flexible purchase options.
Common issues with this device
Is it easy to find spare parts for SN7B-7/0.90?
Siasun Robotics: 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; For cleanroom models, it is recommended to configure consumables for cleanroom maintenance (tool cleaning, particle retesting) according to the annual maintenance contract.
With a nominal load of 7kg, 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 SN7B-7/0.90 worth buying?
There is a large stock of clean and semiconductor equipment, and third-party maintenance requires cleanliness procedural capabilities—we have corresponding SOPs. 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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