🤖 Cobot to CNC: How much does a cell really cost and why is the return on investment (ROI) faster than you think?
🔹 Introduction: The most common (and wrong) question
“How much does the robot cost?” That’s the first thing 9 out of 10 engineering company owners ask. Then they see the price tag for a robotic arm – say, 600,000 CZK – and are often horrified. But asking the price of the arm itself is like asking the price of an engine when you want to buy a car.
The arm alone is useless. To operate a CNC machine, you need a complete robotic cell – hands (gripper), brain (software), safety and connection to the machine.
So let's honestly analyze what the real price of a CNC cobot consists of and why an investment of 1 million crowns is often the best you can make.
🔹 Main part: Anatomy of the price (What you pay)
The cost of a functional cell for operating a CNC milling machine or lathe consists of 3 main parts. The arm itself is often only half of the total amount.
1. Hardware: Arm and Gripper (About 60-70% of the price)
A) Robotic arm (Cobot) Basic building block. Price varies by payload and reach. For most CNC applications you need a reach of over 1000 mm and a payload of 10-16 kg.
Affordable option: Dobot CR10 (10 kg) or Dobot CR16 (16 kg). They offer a top price/performance ratio and are ideal for starting automation. (Approx. 450,000 – 650,000 CZK)
Industry standard: Universal Robots UR10e (12.5 kg) or UR16e (16 kg). (Approx. 700,000 – 900,000 CZK)
B) Gripper The key to efficiency. For CNC, a double gripper is almost a must so that the robot does not run "empty".
Cycle: Jaw 1 removes the finished part, Jaw 2 immediately inserts a new blank. Machine downtime is minimized.
Price: A quality dual gripper (e.g. OnRobot RG6 Dual) typically costs 80,000 - 150,000 CZK.
2. Integration and security (Approx. 30-40% of the price)
This is the "invisible" work that determines success.
Base and tray: The robot needs to stand on something. It needs a table, pallet, or drawer system from which to pick up the semi-finished products.
Machine Interface (I/O): The robot and CNC must "talk" to each other. (Signals "I'm done", "Open the door", "Clamping", "I'm gone, you can go").
Safety: Cobots are safe, but the application must be too. Safety scanners are installed (which slow the robot down when you get close) and risk analysis is performed.
Integrator's work: The time of a technician who designs, assembles, programs, and debugs everything to make the cell run reliably 24/7.
Real price sum
Calculation example (Available option):
- Dobot CR16 robot: 600,000 CZK
- OnRobot double gripper: 110,000 CZK
- Integration, pedestal, security, programming: 240,000 CZK
- Real price of the cell in total: approx. 950,000 CZK
🔹 Price vs. Return on Investment (ROI): Are you calculating it correctly?
The amount of CZK 950,000 seems like a big investment. But now the most important thing: return on investment (ROI).
Most companies make a fundamental mistake: They calculate ROI only as the salary savings of one operator.
Wrong calculation: "I will save 1 operator per shift = 45,000 CZK per month. Payback 950,000 / 45,000 = 21 months."
But the real return is completely different. It's not about saving money, but about increasing the capacity of your CNC machine!
Your CNC milling machine for 4 million crowns runs only 1 shift (8 hours).
The operator also works on other machines, so the real OEE is 70%.
When you deploy a cobot, your CNC suddenly runs 24 hours a day (3 shifts).
The robot has an OEE of 95% because it runs non-stop.
You have gained 16 hours of EXTRA machine time per day. The profit from this extra production is huge.
Real ROI calculation (Cobot at CNC):
- Profit from 2 extra shifts (without people): approx. 80,000 CZK / month
- Saving operator time (can do other work): approx. 20,000 CZK / month
- Total monthly benefit: CZK 100,000
- Return on investment: 950,000 / 100,000 = 9.5 months.
An investment that pays for itself in less than 10 months is not expensive. Leaving a CNC machine idle overnight is expensive.
🔹 Frequently asked questions about the price of a CNC cobot
1. So how much does an entire CNC robotic cell actually cost?
Depending on the complexity, type of robot and gripper, the total "turnkey" price in the Czech Republic most often ranges between CZK 800,000 and CZK 1,500,000.
2. Can I just buy the arm and the tentacle and wire it myself?
Yes, if you have a skilled integrator/maintenance person in your company who understands safety and machine connectivity. Components like Dobot and OnRobot are designed for easy integration. You save on labor, but you take the risk for safety and functionality.
3. I don't have that much money. What are the other options?
Financing is flexible today. Instead of buying, you can use Robot as a Service (RaaS), i.e. renting a robot. The monthly fee (e.g. 60,000 CZK) is then lower than your immediate benefit (e.g. 100,000 CZK) and you earn from day one.
🔹 Conclusion: The most expensive robot is the one you don't buy
The price of a cobot for CNC is not an expense. It is an investment in increasing the capacity of your most expensive machine. Leaving a CNC idle because you don't have people for the night shift is the most expensive luxury. A cobot is a workhorse that unlocks this capacity for you for a fraction of the price of a new machine.
Want to know the exact price of a cell for your specific part and machine? Visit svet-robotu.cz , describe your application to us, and we will calculate the return on investment for you for free.