SZGH-BCi16 | 16 kg Collaborative Robot — ±0.03 mm High Precision, Heavy Payload, No Safety Fence

SZGH-BCi16: Highest Precision + Heaviest Payload in the Mid-Arm Class — No Safety Fence Required

The SZGH-BCi16 is engineered for manufacturing environments where parts are heavy and placement tolerances are tight — automotive powertrain component assembly, white goods (washing machine drum, compressor, motor assembly), precision fastening on structural subassemblies, and heavy fixture operations in electronics and energy equipment manufacturing. At 16 kg payload with ±0.03 mm repeatability, the BCi16 occupies a narrow but commercially important niche: it delivers the precision of a high-accuracy light-duty cobot with the payload capacity of a traditional industrial robot, all within a collaborative safety architecture that eliminates the safety fence. For factory automation managers in automotive Tier 1 and white goods who need to deploy a 16 kg collaborative robot with ±0.03 mm precision on the shop floor alongside operators, the BCi16 is the direct answer. The full SZGH integration stack — 32-channel I/O, SDK (C/C++/Lua/Python), Modbus/Profinet, ROS2 — ensures seamless connection to complex automotive and appliance manufacturing PLCs from day one.

Full Specifications

Robot Arm — SZGH-BCi16

Control Box

Control Box I/O Specifications

Communication & Software

5 Core Advantages of the BCi16

No Safety Fence — 16 kg Heavy Payload in Collaborative Workspaces

A 16 kg collaborative robot without a safety fence is genuinely rare. Most robots handling 16 kg or more are traditional industrial robots behind hard guarding. The BCi16 achieves PL=d, CAT 3 functional safety certification (ISO 13849) with 10-level configurable collision detection at this payload class, enabling genuine mixed operations in automotive assembly and white goods lines where operators and robots share the workspace. For automotive Tier 1 assembly, eliminating the fence reduces cell footprint by 20–30%, shortens line reconfiguration time from hours to minutes, and eliminates the physical and psychological barrier that limits natural operator-robot task handoff — critical in mixed manual-automated stations where humans handle complex sub-tasks while the BCi16 manages precise heavy placement. This is the BCi16's most commercially significant capability: it performs work that has traditionally required a fenced 16 kg industrial robot, but in a collaborative format that allows flexible line design.

±0.03 mm Repeatability at 16 kg — Maximum Precision in the Heavy Payload Cobot Class

Achieving ±0.03 mm repeatability at 16 kg payload represents the highest precision-to-payload ratio available in the BC i Series mid-to-large arm group, and it is matched in this class only by the BCi12 (12 kg, 1,250 mm reach). The BCi16 achieves this through premium harmonic drive reducers, high-resolution joint encoders, and a motion controller with real-time thermal drift compensation — essential for maintaining accuracy over multi-hour production runs at 600 W continuous power. For automotive powertrain assembly (e.g., torque converter disc placement, bearing press-fit, sensor mounting), ±0.03 mm accuracy enables robotic assembly of components with tolerance stacks that would otherwise require manual fitting or dedicated hard automation. In white goods assembly — compressor mounting, motor shaft alignment — this precision level reduces assembly rejects by eliminating the fit variance introduced by robot repeatability error, directly improving first-pass yield.

Open System — Deep Integration for Automotive and Appliance Line PLCs

The BCi16's customers typically run highly integrated manufacturing lines with Siemens or Omron safety PLCs, Keyence or Cognex vision systems for part-presence and orientation checking, torque monitoring from fastening tools, and MES/SCADA connectivity. The SZGH open architecture addresses every layer: Profinet (optional) for direct Siemens TIA Portal integration with cyclic data at 1 ms update rate; Modbus-TCP for Omron/Mitsubishi PLCs and conveyor control; Python SDK with async API for MES integration and torque data logging; and ROS2 for vision-guided placement correction. The 4-channel analog input supports direct reading of torque wrench feedback signals or press-fit force data, enabling closed-loop quality control without additional I/O hardware. For SI integrators building automotive or appliance lines, the BCi16 deploys within standard line communication architectures without custom gateway hardware.

16-Channel Safe I/O — Full Automotive Safety Architecture in One Box

Automotive assembly and white goods manufacturing lines impose rigorous safety I/O requirements: dual-channel e-stop loops to ISO 13850, safety door interlock monitoring for every access panel, operator presence detection (presence-sensing mats, interlocked access gates), robot-enable handshake signals from line PLCs, and coordination signals from downstream conveyor systems and quality gates. The BCi16 control box's 16-channel safety-rated DI and 16-channel safety-rated DO provide sufficient capacity to accommodate all of these safety circuits in a single control architecture — without external safety relay modules that add cost, BOM complexity, and additional failure modes. This is particularly valuable in automotive Tier 1 environments where safety validation documentation for every safety-rated component is audited; fewer components means less documentation and a faster safety audit sign-off. The 16 general-purpose DI/DO channels handle process signals: conveyor run/stop, fixture clamp confirm, part-in-place sensors, quality gate pass/fail signals.

6–12 Month ROI — Domestic-Sourced Precision at a Competitive Price Point

In the 16 kg precision assembly robot segment, European and Japanese platforms command a significant premium — often €80,000–€120,000 system cost for comparable payload and accuracy specifications. The BCi16's domestic-sourced servo drives, harmonic reducers, and structural components deliver ±0.03 mm performance at a system price typically 30–45% below competing European platforms, making high-precision 16 kg collaborative integration accessible for mid-volume automotive and appliance manufacturers in Southeast Asia, South Asia, Latin America, and Africa who previously could not justify the investment. In three-shift automotive assembly applications (1,000–1,500 operations/shift), the BCi16 typically achieves payback in 6–10 months, factoring in labor displacement, reject rate reduction from improved placement accuracy, and the elimination of safety fence construction and maintenance costs.

Application Scenarios

Recommended priority industries for BCi16: Automotive Parts Assembly, White Goods Manufacturing, Precision Fastening.

Series Comparison & Selection Guide

BC i Series — Mid-to-Large Arm Group

BCi16 vs. BCi20 — Decision Guide

BCi16 vs. BCi12 — Decision Guide

Selection Decision Tree

Need ±0.03 mm precision?
└─ Yes:
   ├─ Need large reach (1,250 mm+)? → BCi12
   └─ Need maximum payload (16 kg) in mid-arm class? → BCi16 ✓ (you are here)

Need maximum reach (1,650 mm)?
→ BCi20 (±0.1 mm)

Need large-reach + ±0.1 mm + 10 kg?
→ BCi10

Customer Perspective — Fannie Chen, CEO, SZGH

"A white goods manufacturer in Córdoba, Argentina — producing washing machines and refrigerators for the South American market — approached us with a specific challenge: they were assembling compressor units (14 kg with fixture) into appliance frames, and their manual assembly reject rate from misalignment was running at 4.1% per shift. They needed a robot that could handle the weight and hit ±0.03 mm placement accuracy to eliminate fit rejects — but their cell layout required collaborative operation because operators were loading drum sub-assemblies at an adjacent station. We deployed three BCi16 units. After eight weeks of production, assembly rejects dropped to 0.6%, and the fastening torque monitoring via the analog input channel created an automatic quality log tied to their MES — something their engineering team had wanted for years but couldn't implement with the previous manual process. Payback projection on their cost model: nine months. For heavy-payload precision assembly, the BCi16 is the platform I recommend when the question is 'how do we make it accurate and keep humans nearby.'"

By Fannie Chen, CEO, Shenzhen Guanhong Automation Co., Ltd. (SZGH) | May 2026

Control System

The BCi16 runs the SZGH GRC (Guanhong Robot Controller) platform with heavy-payload precision firmware. The GRC motion kernel implements continuous-path control with real-time joint torque monitoring — essential for both collaborative safety (collision detection at 16 kg load) and process quality (fastening torque verification via analog feedback). The BCi16's higher average power draw (600 W, versus 500 W for BCi10/12) is managed through the GRC's adaptive power regulation, which optimizes joint drive currents dynamically to minimize thermal buildup during multi-hour fastening or assembly cycles, preserving ±0.03 mm accuracy throughout the production shift.

The teach pendant (7-inch touchscreen, IP54-rated) includes dedicated assembly programming modes: bolt-pattern fastening sequencer (define grid/pattern, set torque target, auto-generate waypoints), press-fit monitoring mode (monitor Z-axis force vs. position for bearing press confirmation), and pick-and-place with vision correction (requires ROS2 vision package). Force-torque feedback integration (optional) enables compliant contact operations for insertion tasks requiring contact-guided alignment.

SDK & Developer Integration

Supported Languages

• C / C++ (native library, sub-millisecond Ethernet latency)

• Lua (embedded controller scripting for fastening sequences)

• Python 3.x (async API — MES quality data logging, torque history upload)

Communication Protocols

• Ethernet (TCP/IP): Primary high-speed control channel

• Modbus-RTU / Modbus-TCP: Standard automotive/appliance PLC mapping — 250+ pre-mapped registers

• Profinet (optional): Siemens TIA Portal-compatible, 1 ms cyclic exchange — preferred for automotive Tier 1 Siemens lines

• RS485: Torque tool controllers, legacy HMI panels, conveyor drives

ROS Integration

• ROS1 (Noetic) and ROS2 (Humble / Iron) packages

• MoveIt2-compatible URDF with collision geometry

• Tested with Keyence IV3 vision for part-presence detection and orientation correction before assembly

• Photoneo MotionCam-3D integration for bin-picking + precision placement workflows

Third-Party Integration (Pre-Validated)

• PLCs: Siemens S7-1200/1500 TIA Portal, Omron NX/NJ, Mitsubishi iQ-R

• Fastening Tools: Stanley Assembly Technologies, Desoutter torque tools (Modbus/Ethernet)

• Vision: Keyence IV3/CV-X, Cognex In-Sight

• Force/Torque: ATI Mini45, Bota SensONE (press-fit, insertion force monitoring)

• MES/SCADA: Standard REST/OPC-UA interface for quality data upload

Quick-Start Python Example

import szgh_sdk as robot
arm = robot.connect("192.168.1.102")
arm.move_to(x=400, y=200, z=100, rx=0, ry=0, rz=0, speed=300)
torque = arm.get_ai(channel=0)   # Read torque tool feedback

Full API documentation and automotive assembly integration guides available at szghtech.com. For Siemens TIA Portal GSD file and fastening sequence programming templates, contact export02@szghtech.com.

Safety Certifications — Plain Language

CE (European Conformity): BCi16 meets EU Machinery Directive 2006/42/EC and harmonized collaborative robot safety standards. Essential for automotive Tier 1 suppliers exporting to European OEMs or operating in EU manufacturing facilities.

UL (Underwriters Laboratories): North American electrical safety certification. Required for US/Canada; recognized by major automotive OEMs (GM, Ford, Stellantis) in North American supplier qualification audits.

KCs (Korea Certification): Korean electrical and safety certification for direct deployment in Korean-affiliated automotive manufacturing operations worldwide (Hyundai, Kia, Samsung supply chains).

PL=d, CAT 3 (ISO 13849): The BCi16's functional safety rating — critical for achieving no-fence collaborative operation at 16 kg payload. PL=d means the safety function has a probability of dangerous failure between 10⁻⁷ and 10⁻⁶ per hour. CAT 3 means the architecture tolerates single fault without loss of safety function. For automotive Tier 1 customers requiring functional safety documentation for CE machinery declarations, the BCi16's PL=d, CAT 3 rating at 16 kg collaborative operation simplifies the overall machine safety assessment compared to robots requiring additional engineering controls (speed/force limiting, safety mats) to achieve collaborative status.

Warranty: 12 months from delivery on robot arm and control system. Authorized service partners in 40+ countries with regional spare parts inventory.

Frequently Asked Questions

Q1: Is it safe to operate a 16 kg robot collaboratively without a fence — will it injure an operator?

The BCi16 is designed for collaborative operation per ISO/TS 15066, certified PL=d, CAT 3. The 10-level collision detection system reduces robot power and speed when contact is detected, limiting biomechanical load on the operator to within ISO/TS 15066 injury-avoidance thresholds. The safety configuration (speed, force limits, collision sensitivity) is adjusted for the specific application during commissioning, with SZGH providing application-specific safety configuration guidance. As with any collaborative robot, a site-specific risk assessment per ISO 12100 is required before deployment, and SZGH provides documentation templates for this process.

Q2: Can the BCi16 integrate with our Siemens automotive line PLC (TIA Portal)?

Yes. The BCi16's optional Profinet interface provides a Siemens TIA Portal-compatible GSD device profile with 1 ms cyclic data exchange. Over 60 pre-mapped Profinet I/O signals cover joint states, TCP position and speed, I/O status, program state, and safety function status. SZGH provides a TIA Portal Add-In (V15+ compatible) and a commissioning guide for Siemens integration. For Modbus-TCP based Siemens configurations, 250+ pre-mapped registers are available. Contact export02@szghtech.com for the automotive Siemens integration bundle.

Q3: Can the 16-channel safety I/O handle all safety signals in an automotive assembly cell?

Yes. The 16 safety-rated DI and 16 safety-rated DO channels accommodate: dual-channel emergency stop loop, safety door/access gate monitoring (multiple doors), safety mat/light curtain presence detection, robot enable/disable handshake from safety PLC, downstream conveyor safety interlocks, and zone-based speed reduction triggers — simultaneously, within a single control architecture. This eliminates the need for external safety relay expansion in most automotive assembly cell layouts and simplifies the functional safety documentation required for CE machinery declarations and customer safety audits.

Q4: How does the BCi16 compare to the BCi20 for heavy assembly?

The BCi16 (967.5 mm reach, 16 kg, ±0.03 mm) is the right choice when placement precision is critical — powertrain component assembly, compressor mounting, bearing press-fit operations within a compact workspace. The BCi20 (1,650 mm reach, 20 kg, ±0.1 mm) is designed for large-envelope heavy operations: pallet building, large-frame handling, reaching across wide conveyors. If your application requires ±0.03 mm accuracy at heavy payload, choose BCi16. If you need maximum reach and the highest payload class with ±0.1 mm, choose BCi20.

Q5: What is the accuracy trade-off when using a 16 kg end-effector at full speed?

The BCi16 maintains ±0.03 mm repeatability (static positioning accuracy measured per ISO 9283) across its rated payload and full speed range. Dynamic path accuracy during high-speed motion is a different metric — for applications requiring path accuracy (not just position repeatability) at high speed with a heavy end-effector, SZGH recommends reducing TCP speed to 500–1,000 mm/s for the highest precision path segments. SZGH's application engineering team can provide dynamic accuracy characterization data for specific end-effector configurations on request.

Q6: What base and mounting requirements does the BCi16 have?

The BCi16 (38 kg body weight) mounts via ISO 9283 flange with M8 bolts (6×, 50 mm bolt circle). Any-angle mounting is supported. Given the 16 kg payload and heavier inertial loads at full extension, SZGH's base design guide recommends a minimum base rigidity (natural frequency) of ≥20 Hz for standard production applications, and provides engineering data for steel tube, concrete pad, and column-mount base designs. Overhead mounting (inverted) is fully supported for assembly from above — a common configuration in white goods drum assembly cells.

Q7: How are spare parts and service handled for automotive production environments?

SZGH maintains regional parts inventory for automotive-critical components (joint modules, servo drive cards, encoder cables) with 3–5 business day delivery from regional hubs. For automotive customers requiring documented maintenance programs, SZGH provides a preventive maintenance schedule, spare parts BOM, and MTBF data suitable for IATF 16949 maintenance process documentation. Remote diagnostics via Ethernet API allows SZGH engineers to perform fault isolation and parameter correction without site visit for most software-related issues, minimizing unplanned downtime.

Q8: What ROI can we expect from deploying BCi16 in a white goods assembly line?

In white goods assembly (compressor mounting, motor assembly, drum handling) operating two or three shifts, BCi16 deployments typically achieve payback in 7–11 months. Key contributors: labor displacement (one BCi16 typically replaces 1–2 FTE on heavy assembly tasks), quality savings from reject reduction (0.03 mm precision vs. manual placement), elimination of workplace injury risk from heavy manual handling (reducing workers' compensation exposure), and avoidance of safety fence construction costs. SZGH provides an ROI calculation worksheet customized to white goods assembly parameters — contact export02@szghtech.com.

Contact & Get a Quote

Request a BCi16 datasheet, automotive assembly integration package, or ROI worksheet. Technical team responds within one business day.

Related Products

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• SZGH-BCi20 — 20 kg Collaborative Robot, 1,650 mm Reach, Flagship Heavy Cobot

• SZGH-BCi10 — 10 kg Collaborative Robot, 1,350 mm Reach, Large-Reach General Cobot

• SZGH-BCk5 — 5 kg Compact Collaborative Robot, Light Arm Series