30Ton Self-Aligning Welding Rotator HGZ30 for Vessel Welding
HGZ-30 30Ton Self-Aligning Welding Rotator is a heavy-duty welding auxiliary equipment designed for large cylindrical workpieces, featuring one driving frame plus one idler frame configuration. It automatically adjusts roller swing angle to center different-size cylinders without manual spacing adjustment. With VFD variable speed system, it ensures smooth operation for girth and longitudinal welding of boilers, pressure vessels, and storage tanks. Three optional rollers accommodate welding, surfacing, and polishing work, easily combining with welding manipulators and automatic welders for complete automated welding lines.
Technical Parameters
| Item |
Specification |
| Model |
HGZ-30 Self-Aligning Welding Rotator |
| Rated Load |
30 Ton (1 drive + 1 idler) |
| Workpiece OD Range |
Φ600mm ~ Φ4000mm |
| Roller Size |
Φ380 × 200mm |
| Linear Speed |
100 ~ 1000mm/min stepless |
| Drive Power |
2.2KW × 2 |
| Speed Control |
VFD Frequency |
| Roller Choice |
PU / Solid Steel / Composite |
| Control |
Wired pendant, wireless optional |

Structure Configuration & Material List
Constructed with thick Q235 steel plate and profile steel integral welding, finished with stress relief annealing to prevent deformation under long-term heavy loads.
- Roller Bracket & Swing Arm: Cast steel + forged piece machining provides high mechanical strength for automatic self-aligning swing action.
- Roller Options:
- PU roller: High elastic polyurethane protects workpiece surface
- Solid steel roller: 45# steel, high temperature resistant for surfacing
- Composite roller: Steel core with outer PU layer
- Drive Part: Gear reducer + copper coil inverter motor, with gears made of alloy structural steel via quenching treatment for superior wear resistance.
- Electric Control Cabinet: Standard carbon steel cabinet with built-in VFD inverter, overload and emergency stop protection components.
Key Features
Full auto self-aligning design eliminates manual calibration when changing workpiece diameter, reducing setup costs
30T heavy load structure with thick base ensures stable operation without shaking or slipping
Dual motor + dual inverter four-wheel synchronous drive prevents workpiece offset and welding deformation
100~1000mm/min stepless adjustable rotating speed matches diverse welding craft requirements
PU/steel/composite three roller options for different working environments
Overload, overcurrent & emergency stop protection with wired control as standard, wireless remote optional

Application Scope
- Heavy-duty pressure vessel manufacturing for chemical and petrochemical industry girth welding
- Boiler cylinder and header production in thermal power equipment processing factories
- Large carbon steel & stainless steel storage tank fabrication for water, oil and gas projects
- Thick-wall steel pipe and tubular component circumferential seam welding
- Environmental protection equipment, filter tank and large cylindrical structural processing
After-sales Service
- 12-month whole machine warranty; driving motor and reducer enjoy 24-month warranty period from delivery date
- Free technical consultation and installation guidance via video/phone online
- Spare parts supply all year round at factory cost price after warranty expires
- Professional engineers offer overseas on-site service if customers require
- Timely solution for operation faults and technical problems during equipment usage

Frequently Asked Questions
Q1: What's the loading capacity of HGZ30 welding rotator?
A1: Rated 30 ton per full set for heavy large cylinder processing.
Q2: Need manual adjustment for different tank diameter?
A2: No, auto self-centering structure realizes automatic roller angle adjustment.
Q3: Which roller types are available?
A3: PU, solid steel and composite roller for different working needs.
Q4: Can speed be regulated?
A4: Yes, VFD inverter enables 100-1000mm/min stepless speed change.
Q5: Warranty condition?
A5: 1 year whole machine warranty, 2 years for motor and reducer, lifelong spare part supply.