SZGH H1500-B-6 Six-Axis Welding Robot

What Is the SZGH H1500-B-6?

The SZGH H1500-B-6 is a six-axis industrial arc welding robot with a 1,500 mm reach and ±0.05 mm repeatability, purpose-built for continuous MIG, TIG, MAG, plasma arc, and spot welding. Its fully enclosed axis structure seals every joint against weld spatter, protecting internal cables and encoders for uninterrupted three-shift operation in the harshest fabrication environments.

Full Technical Specifications

Axis Motion Range

Axis Maximum Speed

Supported Welding Processes

Core Advantages

Fully Enclosed Axis Structure — Spatter-Proof from Day One

Every joint on the H1500-B-6 is completely sealed. Weld spatter cannot penetrate to reach internal cables or encoders. Competing general-purpose robots used in welding leave axis joints exposed; even moderate spatter accumulation over weeks of three-shift welding burns through cable insulation and contaminates encoders, causing unplanned downtime. The H-series enclosed design eliminates this failure mode entirely, directly extending service life and reducing maintenance cost.

±0.05 mm Repeatability — Consistent Weld Seams Every Arc

A weld-start position deviation beyond 0.5 mm causes visible seam inconsistency and porosity. The H1500-B-6 holds ±0.05 mm, keeping arc-start deviation below 0.3 mm even after thousands of cycles. This level of precision meets the cosmetic and structural requirements of export-grade fabrication for EU, North American, and Japanese markets.

Extended Base Design — Anti-Vibration Stability for Arc Welding

The H-series base is wider and heavier than standard-series robots of equivalent payload. The added mass and footprint damp vibration from arc ignition pulses and wire-feed mechanisms. The result is a straighter, smoother weld bead with less spatter generated at the torch — a compound benefit that also reduces cleaning time.

Single-Axis Positioner Integration — Full Seam Coverage Without Manual Repositioning

The H1500-B-6 is designed to work in tandem with SZGH single-axis positioners. The positioner rotates the workpiece while the robot handles each face in turn, eliminating the need for operators to enter the weld zone to reposition parts. This combination brings typical four- to six-face weld coverage within a single automated cell with no manual intervention.

Broad Process Compatibility — One Robot, Multiple Weld Technologies

Factory-configured support for MIG, TIG, MAG, plasma arc, and spot welding means the H1500-B-6 adapts to changing product mixes without hardware replacement. SZGH's welding process package integrates with mainstream welding power source brands, reducing integration engineering time.

Application Scenarios

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H-Series Internal Comparison — Which Model Is Right for You?

Selection guide:

• Workpiece longest dimension ≤ 1,200 mm → H1500-B-6

• Workpiece longest dimension 1,200–1,800 mm → H2100-B-6

• Prefer the latest motion platform → HZ1500-B-6 or HZ2000-B-6

• Box structures with six-face weld requirements → H2100-B-6 + dual-axis positioner

Customer Case Study

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

A metal door and window manufacturer from Romania came to us with a specific pain point: their rectangular steel tube door frames — each with four corner weld joints visible to the end customer — were being hand-welded by operators of varying skill levels. One container-load of export product was rejected by a German buyer because of inconsistent seam appearance and minor porosity at the corners. The cost of that single rejection, including shipping both ways and rework, nearly wiped out six months of margin on that product line.

We configured an H1500-B-6 paired with one of our single-axis positioners. The robot handles the four linear seams on the first face; the positioner rotates the frame 90°, and the robot completes the remaining two faces. The ±0.05 mm repeatability keeps every arc-start position within 0.3 mm of the programmed point — a tolerance far tighter than any human welder can achieve consistently over an eight-hour shift, let alone across three shifts.

What the customer did not fully anticipate was how important the enclosed axis structure would be. Their factory runs three shifts, six days a week, with active MIG welding in an open bay. After two years of continuous operation — roughly 9,000 production hours — the H1500-B-6 has had zero axis faults attributable to spatter ingress. Their previous experience with a general-purpose robot used for welding ended in a cable replacement at around 3,500 hours. The difference is the fully sealed joints.

The Romanian customer's EU client re-audited the facility after the automation went live and rated the weld quality as "Satisfactory" — the first time that rating had been achieved in three audit cycles.

Control System & Welding Process Configuration

SZGH Welding Controller

The H1500-B-6 ships with SZGH's dedicated welding robot controller, which includes:

• Welding process package: Pre-configured weld schedules for MIG, TIG, MAG, plasma arc, and spot welding

• Arc tracking: Real-time seam tracking for parts with dimensional variation

• Wire feed control: Integrated wire-feed speed synchronization with robot travel speed

• Multi-layer weld programming: Teach-pendant programming for fillet, butt, and lap joints

Positioner Integration

The H1500-B-6 controller supports synchronized motion with SZGH single-axis positioners. In synchronized mode:

• The positioner axis appears as an external robot axis in the teach pendant

• Robot and positioner move simultaneously for continuous-seam spiral and circumferential joints

• Safe-zone interlocking prevents robot motion into positioner travel range

Compatible Welding Power Sources

The H-series welding process package supports I/O and communication integration with major welding power source brands including Fronius, Lincoln Electric, Miller, ESAB, OTC Daihen, and Panasonic, as well as domestic Chinese brands. Specific protocol support available on request — contact export02@szghtech.com.

Certifications & Warranty

Frequently Asked Questions

Q1: What is the maximum workpiece size the H1500-B-6 can weld without repositioning?

With a 1,500 mm reach and a standard ground-mounted installation, the robot covers a working envelope roughly 1,200 mm in the longest practical welding dimension on a single face. Paired with a single-axis positioner, coverage extends to all faces of a workpiece up to approximately 1,200 × 600 × 600 mm without manual repositioning.

Q2: How does the fully enclosed axis structure protect the robot during welding?

All six joint axes are sealed with precision covers that block weld spatter, fumes, and metal dust from reaching internal cable bundles and encoder discs. On unprotected general-purpose robots, spatter accumulates inside joints over weeks of continuous welding, burning cable insulation and fouling encoder optics — eventually causing axis faults. The H1500-B-6's sealed joints eliminate this failure mode.

Q3: Can the H1500-B-6 be used for TIG welding as well as MIG?

Yes. The controller's welding process package supports MIG, TIG, MAG, plasma arc, and spot welding. TIG welding with the H1500-B-6 is common for stainless steel fabrication and applications requiring clean, low-spatter welds (e.g., food equipment frames, visible architectural steel).

Q4: What is the difference between the H1500-B-6 and the HZ1500-B-6?

The HZ1500-B-6 is the next-generation evolution of the H1500-B-6, featuring an enhanced motion platform with improved joint performance. Both share the same 1,500 mm reach and 6 kg payload with fully enclosed axis protection. Customers with higher throughput requirements or who prefer the latest kinematics should consider the HZ1500-B-6. Contact us for a side-by-side comparison.

Q5: Does the H1500-B-6 require a welding positioner, or can it operate standalone?

The H1500-B-6 operates as a fully independent welding robot without a positioner — suitable for flat, single-face, or continuous-seam workpieces. The single-axis positioner is recommended when the workpiece has weld seams on multiple faces that cannot all be reached from a fixed robot position, which is the case for most box frames, door structures, and similar assemblies.

Q6: What repeatability is required for consistent weld quality, and how does ±0.05 mm compare?

Industry practice for arc welding robots specifies a maximum of ±0.1 mm repeatability to ensure reliable arc-start positioning and seam consistency. The H1500-B-6's ±0.05 mm is twice as tight as the minimum requirement, providing margin for tooling variation and fixture wear over the product's service life.

Q7: What is the lead time and do you offer on-site commissioning?

Standard lead time is 30–45 business days from order confirmation for production units. SZGH offers remote commissioning support via video call at no additional cost. On-site commissioning by SZGH-certified technicians is available through regional agents in USA, Turkey, Romania, Russia, Egypt, Thailand, and Mexico. Contact export02@szghtech.com for scheduling.

Q8: Is the H1500-B-6 compatible with third-party welding torches and wire feeders?

Yes. The robot wrist flange conforms to ISO 9409-1-50-4-M6, accepting standard welding torch mounts from Binzel, Abicor, Tregaskiss, and other major suppliers. Wire feeder mounting brackets are included. Torch and wire feeder selection depends on the welding process and wire diameter — SZGH's applications team provides torch selection guidance as part of the quotation process.

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Related Products

• SZGH HZ1500-B-6 — Next-generation 1500mm welding robot, enhanced motion platform

• SZGH H2100-B-6 — 2100mm large-reach welding robot for heavy structural parts

• SZGH HZ2000-B-6 — Next-generation 2000mm welding robot

• SZGH Single-Axis Positioner — Standard welding positioner for H1500-B-6 integration