Robotic Welding and Palletizing

Cobot welding and robotic palletizing are the two fastest-growing cobot applications in small manufacturing. This guide covers what each involves, what it really costs, where it works well, and where it fails.

Cobot welding at a glance

A cobot welder is a robot arm fitted with a MIG (GMAW), TIG (GTAW) or laser welding torch, programmed to run consistent weld passes. The system includes the cobot, a welding power source, a wire feeder, a weld cell (fume extraction, optional guarding), and programming time.

$60K–$120KTypical installed cobot MIG weld cell
6–30 sMin. weld run for cobot efficiency
18–36 moTypical payback (1-shift, welder shortage)
±1.0 mmTypical cobot joint-tracking accuracy

Where cobot welding works — and where it doesn't

Cobot welding is strongest when: joint geometry is consistent and repeatable batch to batch, weld runs are at least 20–30 seconds long, and parts can be fixtured accurately (within ±1 mm). It struggles with: highly variable joint fit-up, very short tack welds, complex multi-pass TIG, and custom one-off fabrication where setup time exceeds weld time.

See the detailed guide: Cobot Welding for Small Shops: Cost, Limits, Payback.

Cobot palletizers vs conventional palletizers

A cobot palletizer uses a collaborative robot (typically 20–35 kg payload) to stack boxes, bags or trays onto pallets. A conventional palletizer uses a dedicated industrial robot or conveyor-based system. Key differences:

FactorCobot palletizerConventional palletizer
Throughput5–12 cycles/min12–40 cycles/min
Installed cost$50,000–$120,000$100,000–$400,000+
Floor spaceSmall (3–5 m²)Large (10–30+ m²)
Programming changesEasy (drag-and-drop pallet patterns)Moderate to complex
Best forLow-medium volume, multiple SKUsHigh-volume, single or few SKUs

See the full comparison: Cobot Palletizer vs Conventional Palletizer.

Guides in this section

Cobot Welding for Small Shops: Cost, Limits, Payback

Full installed-cost breakdown, MIG vs TIG, joint geometry requirements, and a payback calculation for a two-welder shop.

Cobot Palletizer vs Conventional Palletizer

Throughput, installed cost, programming effort, and a decision framework for choosing between collaborative and conventional palletizing.

TIG Welding With a Robot: Applications and Limitations

When robotic TIG (GTAW) makes sense, joint tolerance requirements, and why it is less common in cobots than MIG welding.

Case Packing Robots: Selection and Integration Guide

Robotic case packing for food, beverage and consumer goods — robot types, infeed requirements, and throughput benchmarks.

Frequently asked questions

Is cobot welding worth it for a shop with 2 welders?
It can be, if you have repeat orders of consistent weldments. A two-welder shop paying $60,000/year per welder saves $60,000–$120,000 annually if the cobot replaces one welder's output. At $80,000 installed cell cost, that is a 9–16 month payback — strong. But the cobot must be loaded with repeat work; if your welders spend 60% of their time on one-off custom parts, the cobot can only capture the repeat 40%, extending payback to 3–4 years.
What throughput can a cobot palletizer achieve?
A cobot palletizer handling standard cases (10–25 kg) typically achieves 5–12 cycles per minute, equivalent to 300–720 cases per hour. This covers most small-to-medium end-of-line applications. If you need >15 cycles/min continuously, a conventional industrial palletizer or a purpose-built palletizing cell is a better fit.
Can a cobot do TIG welding?
Yes, but with limitations. TIG (GTAW) requires very tight torch-to-work distance control (±0.5 mm or better), precise travel speed, and often separate filler wire feeding. Cobots have sufficient repeatability (±0.02–0.05 mm) for TIG paths, but the process parameters are harder to optimise robotically than MIG. Robotic TIG is most practical for straight-line or simple curved welds in stainless steel or aluminium with consistent joint fit-up. See the TIG welding robot guide.
Do I need a fume extraction system for a cobot welder?
Yes. OSHA mandates engineering controls for welding fume, which contains manganese, chromium (in stainless) and other hazardous compounds. A cobot weld cell must include either local exhaust ventilation (LEV) at the torch or a fume extraction hood/enclosure. Fume extraction adds $3,000–$15,000 to cell cost depending on configuration. Some cobot welding packages (Hirebotics Beacon, Vectis Cobot Tool) include integrated fume extraction.

Sources

  1. ESAB cobot welding guide, esab.com, accessed September 2026
  2. Hirebotics Beacon cobot welder specifications, hirebotics.com, accessed September 2026
  3. OSHA Welding, Cutting, and Brazing — 29 CFR 1910.252
  4. American Welding Society, Welding Digest — "Cobot Welding: The Future of Automated Manufacturing", September 2024