WPT Welding Chucks
Wide-Range Self-Centering Chucks for Welding Positioners
WPT Welding Chucks are self-centering workholding chucks designed primarily for welding positioners and welding or cutting equipment.
The WPT Series combines a wide clamping range with high load capacity, allowing large pipes, cylinders and other workpieces to be centered and securely clamped during welding and positioning operations.
With models covering clamping diameters up to Ø2000 mm and specified load capacities up to 2000 kg, WPT Welding Chucks are suitable for applications requiring large workpiece capacity and flexible diameter coverage.
The series is designed for accurate self-centering, convenient manual operation and efficient workpiece setup in repetitive welding and cutting applications.
Available Models: WPT600 – WPT2000
Clamping Range: Up to Ø2000 mm
Maximum Clamping Force: Up to 70 kN
Load Capacity: Up to 2000 kg
WPT Series Manual Welding Chuck Features
Wide Clamping Range
WPT models cover workpiece diameters from Ø100 mm to Ø2000 mm, depending on the selected model.
This makes the series particularly suitable for workshops handling different pipe, cylinder and fabricated component diameters.
Self-Centering Clamping
The WPT Series is designed to center and clamp the workpiece, reducing the amount of manual alignment required during workpiece setup.
High Load Capacity
Depending on model, specified load capacity ranges from 1000 kg to 2000 kg.
Larger WPT1500, WPT1600, WPT1800 and WPT2000 models are specified with load capacities of up to 2000 kg.
Designed for Welding Positioners
The WPT Series is specifically intended for use with welding positioners and other welding/cutting equipment. The catalogue also shows WPT chucks installed on positioners in actual application configurations.
High Clamping Force
Maximum specified clamping force ranges from 35 kN for WPT600 to 70 kN for WPT2000.
Large Size Range
Seven models are available:
WPT600 / WPT1000 / WPT1200 / WPT1500 / WPT1600 / WPT1800 / WPT2000
WPT Welding Chuck Specifications
| Model | Max. Input Torque | Max. Clamping Force | Load Capacity | Clamping Range |
| WPT600 | 250 Nm | 35 kN | 1000 kg | Ø100–600 mm |
| WPT1000 | 300 Nm | 45 kN | 1500 kg | Ø200–1000 mm |
| WPT1200 | 300 Nm | 45 kN | 1500 kg | Ø200–1200 mm |
| WPT1500 | 400 Nm | 65 kN | 2000 kg | Ø300–1500 mm |
| WPT1600 | 500 Nm | 65 kN | 2000 kg | Ø300–1600 mm |
| WPT1800 | 500 Nm | 65 kN | 2000 kg | Ø300–1800 mm |
| WPT2000 | 600 Nm | 70 kN | 2000 kg | Ø300–2000 mm |
These values are based on the supplied WPT Series product catalogue.
Mounting Dimensions
| Model | D1 (H7) | D2 | D3 | H1 | H | L2 | L1 | L | Z-d1 | Z-d |
| WPT600 | Ø205×10 | Ø275 | 175 | 260 | 345 | 60 | 175 | — | 6-M12×150 | — |
| WPT1000 | Ø254×10 | Ø350 | 175 | 260 | 558 | 80 | 300 | — | 6-M16×150 | 6-M16×50 |
| WPT1200 | Ø254×10 | Ø350 | 175 | 260 | 658 | 80 | 300 | — | 6-M16×150 | 6-M16×50 |
| WPT1500 | Ø405×10 | Ø515 | 230 | 350 | 800 | 120 | 500 | — | 6-M20×200 | 6-M20×60 |
| WPT1600 | Ø405×10 | Ø515 | 230 | 350 | 850 | 120 | 500 | — | 6-M20×200 | 6-M20×60 |
| WPT1800 | Ø405×10 | Ø515 | 230 | 350 | 900 | 120 | 500 | — | 6-M20×200 | 6-M20×60 |
| WPT2000 | Ø505×10 | Ø625 | 230 | 350 | 900 | 120 | 500 | — | 6-M20×200 | 6-M20×60 |
Dimensions in mm.
Note: Connection dimensions are provided for preliminary selection only. Final dimensions shall be confirmed according to the approved order drawing.
Designed for Welding Positioners
The WPT Series is specifically designed for integration with welding positioners and related welding or cutting equipment.
When mounted on a compatible positioner, the chuck centers and clamps the workpiece while the positioner provides the required rotation or angular positioning.
A typical setup is:
Workpiece → WPT Welding Chuck → Welding Positioner → Welding / Cutting Process
The catalogue shows WPT chucks used on both horizontal rotary positioners and tilting positioner configurations.
Typical Applications
- Pipe Welding
Suitable for holding large-diameter pipes during circumferential welding and positioning. - Cylindrical Workpieces
The wide clamping range makes the WPT Series suitable for cylinders and other round fabricated components. - Welding Positioners
Designed for installation on compatible positioners for workpiece centering, clamping and rotation. - Tank & Vessel Fabrication
Larger WPT models provide the diameter range and specified load capacity required for many large cylindrical fabrication applications. - Welding & Cutting Equipment
The series can be integrated with welding and cutting equipment requiring self-centering workholding.
How to Select a WPT Welding Chuck
1. Determine the Workpiece Diameter
Identify the minimum and maximum diameter that needs to be clamped.
2. Check the Workpiece Weight
Compare the workpiece weight with the specified chuck capacity.
3. Determine the Center of Gravity
For long or heavy workpieces, provide the distance from the chuck face to the workpiece center of gravity.
4. Check the Positioner Capacity
The welding positioner must be capable of supporting the combined chuck and workpiece under the actual operating conditions.
5. Check the Mounting Interface
Confirm the mounting dimensions between the WPT chuck and positioner table.
6. Confirm Operating Orientation
Specify whether the chuck will operate horizontally only or will also be tilted by the welding positioner.
WPT Model Selection Guide
| Maximum Required Diameter | Model to Consider | Load Capacity |
| Up to Ø600 mm | WPT600 | 1000 kg |
| Up to Ø1000 mm | WPT1000 | 1500 kg |
| Up to Ø1200 mm | WPT1200 | 1500 kg |
| Up to Ø1500 mm | WPT1500 | 2000 kg |
| Up to Ø1600 mm | WPT1600 | 2000 kg |
| Up to Ø1800 mm | WPT1800 | 2000 kg |
| Up to Ø2000 mm | WPT2000 | 2000 kg |
Note: This table is intended for preliminary diameter selection only. Final selection must also consider workpiece weight, center of gravity, clamping position, required clamping force and welding positioner capacity.
Load Capacity & Safety Considerations
The nominal load capacity of a WPT Welding Chuck should not be considered independently from the actual workpiece geometry and operating condition.
The catalogue specifies that users should consider an appropriate safety factor between the clamped workpiece weight and clamping force.
When the chuck and workpiece are tilted or rotated away from the horizontal position, the effective center-of-gravity distance changes. As a result, the allowable clamping/load capability may decrease.
Consider:
- Workpiece weight
- Workpiece diameter
- Workpiece length
- Center-of-gravity distance
- Clamping position
- Chuck orientation
- Positioner load capacity
- Positioner overturning moment
Important: A 2000 kg chuck rating does not automatically mean that every 2000 kg workpiece can be safely held in every orientation.
WPT vs. WP vs. WPS Welding Chucks
| Feature | WPT | WP | WPS |
| Main Focus | Wide-range / large workpieces | Lightweight general welding | Large through-bore / high clamping force |
| Self-Centering | Yes | Yes | Yes |
| Max. Catalogue Range | Ø2000 mm | Ø950 mm | Ø1250 mm |
| Max. Specified Load | 2000 kg | 1000 kg | Not specified |
| Max. Clamping Force | 70 kN | Listed in kg | 100 kN |
| Positioner Application | Primary application | Yes | Yes |
| Largest Model | WPT2000 | WP900 | WPS1250 |
Request a Quote
Looking for a WPT Welding Chuck?
Send us your workpiece and welding positioner information for model selection and quotation.
WPT Model: __________
Workpiece Type: __________
Workpiece Diameter: __________ mm
Workpiece Length: __________ mm
Workpiece Weight: __________ kg
Center of Gravity from Chuck Face: __________ mm
Welding Positioner Model: __________
Positioner Load Capacity: __________ kg
Positioner Table Diameter: __________ mm
Operating Position: Horizontal / Tilting
Quantity: __________
For replacement applications, please send us photos, drawings and mounting dimensions of your existing chuck and welding positioner
Frequently Asked Questions
A WPT Welding Chuck is a self-centering workholding chuck designed primarily for welding positioners and welding/cutting equipment.
The standard range includes WPT600, WPT1000, WPT1200, WPT1500, WPT1600, WPT1800 and WPT2000.
The WPT2000 has a specified clamping range of Ø300–2000 mm.
WPT1500 through WPT2000 are specified with load capacities up to 2000 kg. Actual allowable loading depends on workpiece geometry, center of gravity and operating orientation.
The catalogue shows WPT chucks used with positioner equipment, including tilting arrangements. Actual allowable loading should be evaluated because tilting changes the workpiece center-of-gravity relationship and can reduce the available clamping/load capability.
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