🦾 Palletizing cobot: When will your investment pay back? (Exact calculation)

Introduction

The end of the line. The place where finished products turn into a logistical nightmare. It is here that the operator stands, who spends his entire shift doing nothing but lifting 15kg boxes and stacking them on a pallet. It is the worst job in the factory – boring, tiring and dangerous.

Management knows this is a problem. People in this position are absent, they are often sick (back pain) and the line is stopped because of them. A robot is an obvious solution, but then the question arises: "How much does it cost and when will I get my money back?"

Most companies are surprised to learn that a palletizing robot is not an expense, but an investment with one of the fastest returns in the entire industry. Let's do the math.

⚙️ Problem: Hidden costs of manual folding

Before you ask about the price of a robot, calculate how much the current state is costing you. It's not just the operator's gross salary.

How it works in practice: The operator stands at the conveyor belt, takes the boxes and stacks them. As fatigue progresses, his pace decreases. The line has to slow down to "catch up". A poorly stacked pallet is unstable and in danger of collapsing.

The most common problems and losses:

• ➡️ Labor costs: You don't just pay a wage, but a super-gross wage (including contributions, vacation, etc.). And in multi-shift operation, you pay 2x or 3x.
• ➡️ Line downtime: The operator needs a break. He can't keep up. The line has to stop or slow down. Every minute of downtime costs money.
• ➡️ Error rate: Poorly assembled pallet = customer complaint.
• ➡️ Safety and sickness: Back pain is the most common cause of sick leave.

🤖 How a cobot helps: A hard worker at a fraction of the price

A modern collaborative robot (cobot) at the end of the line is perfect for this job.

How does it work in simple terms?

• Reach arm: A cobot with a long reach (e.g. 1300 mm) is placed at the conveyor.
• Gripper: It has a special vacuum or finger gripper at the end that securely grips the box.
• Simple software: Programming takes minutes. Just "click" the box dimensions and folding pattern in the graphical interface. Done.
• Non-stop work: The robot picks up the boxes and stacks them on the pallet. Perfectly. No fatigue. No pause.

📈 Return on Investment (ROI): Let's do the math

This is the most important part. Let's do a realistic but conservative calculation for a typical Czech company.

Scenario: Two-shift operation (Morning + Afternoon)

You need 1 operator for the morning and 1 for the afternoon to cover the end of the line.

1. Costs for people:

• Average super gross salary (total company cost) per 1 operator: 50,000 CZK / month
• Total monthly cost (2 shifts): 2 x 50,000 = 100,000 CZK
• Total annual cost for 2 operators: 1,200,000 CZK

2. Robot costs:

• The purchase price of a complete palletizing cell (e.g. with UR10e robot, gripper, software and installation) is approximately: CZK 1,200,000 (one-time)

Return on investment (ROI) calculation: CZK 1,200,000 (Investment) / CZK 100,000 (Monthly savings) = 12 months

The real return is often less than 10 months. This calculation does not include:

• Night shift operation (which the robot can handle on its own and "for free").
• Increasing line speed (the robot is faster than a human).
• Zero error rate (no costs for complaints).

📦 Recommended technologies for palletizing

For palletizing, the robot's reach and load capacity are key:

• UR10e – Universal Robots collaborative robot With a reach of 1300 mm, it is the industry standard for palletizing. It is designed to comfortably reach the entire surface of a standard Euro pallet. Its programming is extremely simple.
• Dobot CR10 – flexible robotic arm A robust and cost-effective solution with a load capacity of 10 kg. Ideal for reliable box picking and stacking in continuous operation where fast turnaround is key.
• OnRobot RG6 – Smart Handling Gripper Vacuum suction cups are most commonly used for palletizing. But when you're stacking open boxes or specific products, flexible grippers like the RG6 are the ideal "hand".

❓ Frequently Asked Questions (FAQ)

So how quickly will the cobot pay for itself? In a two-shift operation, the payback is typically 10–15 months. If you have a three-shift operation, the payback can be as short as 6–9 months.

Is programming palletizing complicated? Not at all. Modern cobots have special palletizing software. On the tablet, you just enter the box dimensions, the pallet dimensions and select the folding pattern from the menu. Done in 5 minutes.

Does a robot need a cage? That's expensive. No. That's why a collaborative robot (cobot) is used. It works safely next to people. At most, the space is supplemented with a simple scanner that slows the robot down when someone approaches. It's cheaper and more flexible than a fixed cage.

Can the robot stack heavy boxes? Standard cobots (like the UR10e or Dobot CR10) can handle a load of 10–12.5 kg (including the weight of the gripper). This is enough for most boxes in the food, e-commerce, or manufacturing industries.

🧭 Conclusion

Manual palletizing is a luxury you can't afford. It's a chore that generates hidden costs, downtime, and dissatisfied employees. A palletizing cobot is not a "cost," it's the fastest-earning employee you can have. As our calculation shows, in multi-shift operations, it often pays for itself within a year.

Find out how quickly the robot will return directly to you. Visit svet-robotu.cz , contact us and we will calculate the return on investment (ROI) for your specific line for free.