Palletising and end of line
Stacking cartons, shrink packs, crates and products in layers. The longest reach in the family covers a tall stack without repositioning the pallet. See the palletising cell.
Welderstal kit
WS-20
Magnetic footSmart tool7th axisPendantPL/EN pluginConfigurationTrainingSupport
WS kit · welding cobot
WELDERSTAL
WS-20
The WELDERSTAL WS-20 is a ready-to-work cobot built on the bare Fairino FR20 cobot arm (20 kg payload, 1854 mm reach - the longest in the family, ±0.1 mm repeatability, 6 axes). A base for palletising, end-of-line work and large structures. The WS model adds the gripper or torch, equipment, the Welderstal palletising plugin, configuration, commissioning, training and support.
See what a welding cobot as a ready-made WS cell consists of.
20 kg
Payload
1854 mm
Reach
IWE
The WELDERSTAL engineering team
Certified International Welding Engineers
The WELDERSTAL WS-20 is a ready-to-work cobot built on the bare Fairino FR20 cobot arm. The FR20 arm on its own is a technical base with 20 kg payload, 1854 mm reach (the longest in the family), ±0.1 mm repeatability and 6 axes. It is the base most often chosen for palletising and large structures.
The bare FR20 arm vs the WS-20 cobot
The WS model adds to the arm: the working tool (gripper or torch), cell equipment, the Welderstal palletising plugin, process configuration, safety assessment, commissioning, operator training and support after start-up.
Most often as a palletising cell
The WS-20 is the typical base for palletising automation. The palletising plugin makes the operator’s job easier: they work with product, pallet, layer and point parameters instead of programming the cell from scratch.
Selection and deployment
We select the model after analysing the process - the product, packaging, pace, pallet height and space at the line. Start with a process description. See also the palletising kit, palletising, all WS cobots and the WS-16 and WS-30 models.
What you buy
What the WELDERSTAL WS-20 kit includes
You are not buying just the Fairino FR20 cobot arm. Our specialists analyse the cell and put together the complete WS cobot - from the tool and plugins to commissioning, training and support after start-up.
Technical base
The WELDERSTAL WS-20 cobot is built on the Fairino FR20 arm - 20 kg payload, 1854 mm reach.
See the Fairino FR20 arm 01 
Fairino FR20 cobot arm
20 kg payload, 1854 mm reach, 6 axes. The technical base of the kit.
02 
Magnetic foot
Quick mounting of the cobot on a steel table or part. With longer arms the PIN 28 system is used instead.
03 
Teach pendant
Touch control panel with an emergency button for programming and operating the cobot.
04 
Manual 7th axis
Torch angle adjustment from -60° to +60° without reprogramming the path. Matched to the weld in a few seconds.
05 
Smart tool
A wrist-mounted handle with buttons. The operator saves points and starts the program without reaching for the pendant.
06 
Welderstal plugin (Polish/English)
Weld sequences, points and arc parameters in the operator’s language. The code is generated in the background.
07
Process configuration
Paths, parameters and working logic set up for your part, product and cell pace.
08
Operator training
Operation, changeovers and programming new parts. The operator works independently from day one.
09
Support after start-up
Technical contact, materials, the forum and help with further parts.
Applications
What we select the WELDERSTAL WS-20 for
The most common tasks this cobot handles well. We confirm the final scope after a process analysis.
Large structures and frames
Welding and handling large components - frames, trailers, machine parts - where reach and payload matter.
Working with a positioner
Working with single- and two-axis positioners makes it possible to process parts with complex geometry and circumferential welds once the equipment is selected.
Welderstal plugins
The WELDERSTAL WS-20 with Welderstal plugins
Plugins are the difference between a bare arm and a ready-made cell. The operator works with prepared points and parameters, and a changeover does not start with programming from scratch.
See the plugins
Accessories
Choose accessories for the WELDERSTAL WS-20
We match equipment to the process: welding torch holders and torches, grippers, suction cups, fixtures, tables and positioners. Accessories are selected together with the model, not separately.
See it in action
See the videos See how our cobots perform in action
The best way is to see the cell at work. Below are clips from commissioning and cobot welding - you will find more in the videos section. The videos are narrated in Polish.
Parameters
WELDERSTAL WS-20 technical data
Parameters of the base Fairino FR20 arm. You will find the full datasheet of all FR models on the Fairino arms page.
20 kg
Payload
1854 mm
Reach
One level up
Kits the WELDERSTAL WS-20 works in
A cobot is an arm with equipment, ready to work. A kit goes a step further: it adds a process tool, an external axis or line equipment and becomes a complete cell.
End of line
Palletising kit
Stacking cartons, bags and containers from the end of the line onto a pallet.
Cell base
Basic kit
Repeatable parts that fit within the arm’s working envelope.
Linear axis
WS kit + linear track
Long structures or several workstations in one line.
Rotary axis
WS kit + positioner
Circumferential welds on pipes, sleeves and shafts.
Safety
We assess safety for the whole cell
The Fairino FR arm is a collaborative robot - it has joint sensors and force limiting. Whether the cell can work without guarding, however, depends on assessing the whole: tool, part, speed, forces and surroundings. We carry out this assessment before commissioning.
CEISO 10218-1ISO/TS 15066IP54
Robotisation tax relief (Poland)
See the robotisation tax relief Part of the cobot cost can be deducted
For companies taxed in Poland, buying and deploying a cobot may qualify for the robotisation tax relief. See the rules and what the deduction covers.
Other models
Other WS cobots
Each WS cobot is built on a different Fairino FR arm - they differ in payload and reach.
FAQ
Frequently asked questions
How does the WS-20 differ from the bare Fairino FR20 arm?
The FR20 is the cobot arm alone, with 20 kg payload and 1854 mm reach. The WS-20 is a Welderstal cobot built on that base - most often as a palletising cell: the FR20 arm, gripper or torch, equipment, palletising plugin, configuration, commissioning, training and support. You can see the FR cobot arms on the Fairino models page.
Why is the WS-20 recommended for palletising?
The WS-20 has the longest reach in the family (1854 mm) and a 20 kg payload, which lets it stack products in layers on a tall stack without repositioning the pallet. The selection depends on product weight and dimensions, gripping method, pace and pallet height. We describe the details on the palletising page.
Can the WS-20 be integrated with a positioner?
Yes. The FR20 as a base can work with single- and two-axis positioners, which helps with circumferential welding and parts with complex geometry. We match the scope of integration to the process.
How do we select and deploy the WS-20?
We start with a description of the product, packaging, pace, pallet height and space at the line. We select the gripper or torch and the equipment, configure the cell with the plugin, commission it and train the operators, and after start-up we agree the scope of support.
Next step
Send your cell for assessment - we will configure the WELDERSTAL WS-20 cobot
Describe the part, process, pace and space at the cell. On this basis we will select the model, tool, plugins and deployment scope.