Industrial Robots: Benefits, Types and Uses

Introduction

This article takes an in-depth look at industrial robots.

Read further to learn more about topics such as:

What are Industrial Robots?
Advantages of Industrial Robots
Applications of Industrial Robots
Different Types of Industrial Robots
And much more…

Chapter 1: Understanding Industrial Robots

An industrial robot is an automated system equipped with sensors, controllers, and actuators, mounted on an articulated frame. These robots execute specific tasks and operations within manufacturing or processing settings. They operate continuously, performing repetitive movements according to a programmed instruction set. By minimizing or even removing the need for human intervention, industrial robots significantly boost processing speed, capacity, and output quality.

Traditional industrial robots should not be confused with the new-age robotic technology known as collaborative robots. Collaborative robots, or cobots, are designed to work side by side with human operators. Cobots are safe for human interaction due to their enforced speed limits and restricted force generation. This capability, combined with sophisticated motor current sensing, ensures they halt upon encountering an object or person.

The fundamental structure of an industrial robot is its arm, comprising links and joints. Links are rigid sections that span the robot's range of action, while joints connect these links, facilitating either transitional (prismatic) or rotational (revolute) movements. The setup and arrangement of these elements dictate the classification of different industrial robots.

Central to the robot's capabilities is the end-of-arm-tool (EOAT), or end effector. This component of the robot interacts directly with products or processes, performing tasks such as handling and manipulating. It is integral for carrying out specialized functions like welding, measuring, marking, drilling, cutting, painting, and cleaning.

Incorporating an industrial robotic solution involves choosing between working with a manufacturer or an integrator. An industrial robotics manufacturer is a company that internally produces robots, often identified as original equipment manufacturers (OEMs). They are responsible for the design and fabrication of the robots, providing valuable expertise regarding the installation, operation, and maintenance of their machines.

An industrial robot integrator delivers robotic systems made by an OEM. A robot integrator, or “system” integrator, can supply a full “turn-key” robotic work cell, complete with parts feeders, end effectors, and protective guarding to create a comprehensive work cell. Robotic integrators offer a broader spectrum of solutions, as they have the flexibility to provide products from multiple companies under each robot category.

Chapter 2: What are the advantages of using industrial robots?

This chapter explores the multifaceted benefits of integrating industrial robots into modern manufacturing systems. In today’s competitive market, the adoption of industrial automation and advanced robotic technologies has become essential for manufacturers seeking reliable, scalable, and efficient production solutions. While the upfront investment and capital costs for industrial robots, automation equipment, and robotics integration services can be significant, the long-term advantages often outweigh initial expenditures. Industrial robot systems deliver numerous economic and intangible benefits, including higher process efficiency, improved product quality, and streamlined workflows. Their efficient performance and ability to automate repetitive or hazardous tasks frequently result in a rapid return on investment (ROI), often within 2 to 5 years, making them an essential component of smart factories and Industry 4.0 initiatives.

Faster Rate of Production: Achieving a higher production rate is consistently recognized as the primary driver for implementing an industrial robot system. Robots deployed in manufacturing environments, such as robotic assembly lines, automated welding cells, or robotic pick-and-place applications, can operate around the clock without experiencing fatigue or slowdowns. By reducing cycle times and optimizing throughput, they accelerate manufacturing processes and minimize downtime in production lines. Their programmable automation and ability to adapt to complex, multi-axis tasks ensure that all movements are completed accurately and rapidly, regardless of complexity. This speed, combined with relentless precision, enables companies to meet tighter deadlines and scale up operations efficiently.
Higher Load Capacity: Industrial robots utilize powerful actuators and advanced drive systems that far surpass the strength capabilities of human operators. The typical "muscle" in a modern industrial robot is a servo motor, engineered for precise positioning and torque control. Combined with high-precision planetary, harmonic, or cycloidal gearboxes, these components enable robots to handle exceptionally heavy payloads and support material handling, palletizing, and heavy-duty machining operations across a variety of industries. Enhanced load handling not only improves workplace ergonomics and safety by mitigating injury risks from heavy lifting, but also supports high-mix, low-volume production runs where flexibility and adaptability are essential.
Improved Safety: Automated robots are transforming workplace safety by taking on dangerous, dirty, and physically demanding tasks that frequently pose risks to human workers. In manufacturing settings where operations expose workers to extreme temperatures, hazardous chemicals, high pressures, heavy machinery, fast movements, or repetitive strain, industrial robots provide reliable risk reduction and enhanced compliance with occupational safety standards. By performing material handling, welding, painting, or even hazardous assembly tasks, robots help eliminate the potential for accidents, injuries, or fatalities on the factory floor. Additionally, the integration of collaborative robots (cobots) and comprehensive safety features ensures safe, productive human-robot interaction without sacrificing operational efficiency.
Lower Operating Cost: Industrial automation systems, powered by robotics, lead to lower operating costs through reduced material waste, increased production efficiency, and fewer human resource expenses. Robots contribute to manufacturing cost savings by lowering scrap and rework rates, optimizing resource usage, and improving yield with every production cycle. Over time, operational expenses are minimized due to reduced dependency on manual labor, elimination of overtime costs, and fewer workplace injuries (which lower insurance premiums and compensation claims). Furthermore, the automation of monotonous or repetitive tasks allows human employees to focus on higher-value, strategic responsibilities such as system supervision, quality control, and process improvement.
Better Repeatability and Precision: Consistency is a hallmark of robotic automation. A robotic system’s repeatable performance remains exact, even after running hundreds of thousands of cycles. Industrial robots are equipped with high-resolution sensors, advanced control software, and closed-loop feedback systems that ensure precise, repeatable operation with minimal variability. This reliability is essential for mass production, precision assembly, quality inspection, and other applications where even slight deviations can lead to product defects or process inefficiencies. In sectors such as automotive, electronics, and medical device manufacturing, repeatability and accuracy are critical in meeting strict regulatory and quality assurance requirements.
High Accuracy: Robotic systems consistently achieve higher operating accuracy compared to human labor, thanks to integrated sensor systems, precision rotary encoders, and sophisticated motion controls. This high accuracy is indispensable for automated manufacturing processes that demand tight tolerances and minimal error margins, such as CNC machining, electronics assembly, or aerospace component fabrication. Robotics-driven solutions provide real-time monitoring and feedback, making them ideal for sectors where component interchangeability, product traceability, and strict conformance to engineering specifications are essential.
Excellent Product Quality: Today, industrial robots are at the core of many quality-driven manufacturing operations. Their unparalleled repeatability and accuracy produce reliable, high-quality products, minimizing human error or subjective judgment in the process. Robotic systems can be customized with specialized end effectors, force sensors, and vision systems to handle fragile, delicate, or intricate parts with care, delivering consistent results for assembly, packaging, inspection, or even advanced surgical procedures. As a result, businesses can confidently meet customer expectations, regulatory demands, and evolving market standards for quality assurance.

Industrial robots are also essential in precision manufacturing environments such as semiconductor fabrication, food and beverage production, and pharmaceutical processing, where product integrity and contaminant-free handling are critical for compliance and market success.
More Compact Production Area: Robotics automation paves the way for more compact manufacturing layouts by consolidating a wide range of automated functions within a smaller footprint. High-speed, high-payload robots with integrated end effectors—such as grippers, welders, or cutting tools—allow manufacturers to optimize their production areas and reduce facility overhead costs. Unlike traditional manual labor, which requires additional workspace for multiple operators and support equipment, an automated robotic cell can often perform several tasks within the same area, maximizing efficiency and making more productive use of valuable floor space. Space savings are especially advantageous for manufacturers in urban locations or those seeking to expand output without major physical expansion.

Additional Advantages Driving the Adoption of Industrial Robots

As manufacturing evolves, the integration of robotics and automation continues to create new opportunities for growth, efficiency, and innovation. Industrial robotics solutions are essential for businesses seeking to improve scalability, support flexible manufacturing, and maintain a competitive edge in global markets. Robots enable rapid adaptation to changes in customer demand or product design without lengthy retraining, supporting agile manufacturing and mass customization. Modern industrial robots also utilize artificial intelligence (AI), machine vision, and IoT (Internet of Things) connectivity, unlocking predictive maintenance, remote monitoring, and real-time data analytics that further optimize performance and productivity. Companies investing in robotics not only address immediate labor shortages but also future-proof their operations as digital transformation accelerates across the industrial sector. When evaluating leading industrial robot manufacturers and suppliers, consider solutions tailored to your industry, application, and integration requirements to ensure long-term success and sustainable ROI.

Leading Manufacturers and Suppliers

Chapter 3: What are some common applications of industrial robots?

While industrial robots are frequently used for basic pick-and-place operations, they also perform a range of more complex and critical functions thanks to advanced control technologies, powerful actuators, and sophisticated sensors. Below are some of the most prevalent applications of industrial robots:

Product Assembly: Industrial robots are widely used as assembly machines. They are suitable for highly repetitive but precise tasks that are tedious for a human operator. Their EOAT is usually mechanical grippers that pick, place, and orient small or large parts in quick succession. Sensors are optional and are typically used for recalibrating the accuracy of the robot‘s movements.

Modern end effectors are usually equipped with sensors to ensure that they have the correct part and the part is in the correct orientation for the assembly process. In addition, some robots can use a machine vision camera attached to the end effector to perform dynamic positioning based on the actual location of an assembly that may vary during production.
Non-Conventional Machining: Common non-conventional methods of machining include waterjet cutting, laser cutting, abrasive jet machining, electric discharge machining (EDM), and plasma cutting. These non-contact machining processes perform material removal by using highly concentrated streams of water, light, electric charge, or another physical entity. The concentrated stream erodes, vaporizes, or melts the material.

High amounts of energy are involved in these processes, potentially damaging the product or the machine itself if not controlled properly. Industrial robots are used to control the cutting path of the machine accurately. The right cutting speed, stream stability, and accurate control of machine parameters such as power, pressure, and flow rate are properly maintained using digital industrial robots.
Palletizing and Depalletizing: Palletizing is the process of combining several individual products into a single load for more efficient product handling, storage, and distribution. On the other hand, depalletizing is the opposite: it‘s the disassembly of a palletized load. Both of these processes are labor-intensive and can quickly become process bottlenecks. Robotic palletizers are used for their better product handling and cost-efficiency. EOATs integrated into robotic palletizers are mechanical, pneumatic, and vacuum grippers that operate by picking, orienting, and stacking items, similar to the operation of assembly machines.
Welding: Robotic welding systems are commonly seen in automotive manufacturing plants, but they are also widely used in many high-volume metal fabrication processes. Increased market competitiveness created the need for better product quality and higher operating rates. This, in turn, requires more accurate and precise welding processes. The main advantage of using industrial robots in welding is better control of different parameters such as current, voltage, arc length, filler feed rate, weld rate, and arc travel speed.
Painting and Coating: Painting and coating is a sensitive operation that requires highly accurate and repeatable movements to create a layer with uniform thickness. On top of the required accuracy and precision, painting involves working with potentially hazardous chemicals. Many pigments and solvents are poisonous, and some can even create an explosive atmosphere. All these hazards are mitigated by using industrial robots.
Grinding, Polishing, and Buffing: Grinding, polishing, and buffing are common secondary fabrication processes used to improve the product's final appearance and surface properties. These processes involve repetitive, oscillating motions of the abrasive or polishing material. A robotic arm can easily mimic this simple movement of the tool.
Deburring: Another capability of modern industrial robots is deburring. This is a process where the robot holds a rotating tool, usually a sanding drum, wire wheel, or carbide deburr tool, and follows a pre-programmed path to deburr and smooth parts from casting or injection molding. The advantage of using a robot for deburring is that there is usually debris or dust that the operator would be exposed to during the deburring process. Since a robot's path is repeatable, there is better consistency in smoothing between parts.
Machine Loading and Unloading: Machine loading and unloading take advantage of robotic systems' high load capacity and mechanical advantage. Specific machine loading and unloading applications include transferring large metal or plastic parts from casting, molding, and forging processes to conveyor systems, secondary processing stations, or loading machining centers with blanks for machining.
Inspection: Robotic inspection systems can use measuring devices such as optical sensors, proximity sensors, force transducers, ultrasonic probes, and even complete machine vision systems to perform inspection tasks on parts or assemblies. These machines are typically used to precisely measure the dimensions of a product to maintain quality and consistency. Other inspection applications include non-destructive testing (NDT) of welds, wherein a robotic system automatically moves and controls ultrasonic probes or arrays.
Sorting: Sorting processes utilize the simple pick and place capability and high-speed monitoring of robotic systems. Visual sensors detect variations in size, color, or shape. Upon detection of an odd item, a robot is used to pick and reject the item. Common industries using robotic sorting systems are pharmaceuticals and electronics.

Chapter 4: What are the different types of industrial robots?

Industrial robots are categorized based on their arm configuration, which consists of links and joints. By altering the number and type of these components, robots can be configured in various ways. Below are the six main types of industrial robots.

Cartesian Robot: A Cartesian robot is composed of three prismatic joints. Thus, the tool is limited to linear motion at each axis but can still generate circular moves through kinematic models that allow circular interpolation.

The name Cartesian is derived from the three-dimensional Cartesian coordinate system, which consists of X, Y, and Z axes. Cartesian robots are the simplest robotic system since their operation may only involve translational movements. They are suitable for applications that only require movement at right angles without the need for angular translations.

Since one or two of a cartesian robot’s prismatic joints can be supported at both ends, they can be built to handle heavier loads than other robot types. An example of a Cartesian robot is a gantry machine. Gantry machines, also known as gantry cranes, are used to pick and place large, palletized loads.
Polar Robot: Polar robots, also known as spherical robots, use the three-dimensional polar coordinate system r, θ, and φ coordinate. Instead of having a work envelope in the shape of a rectangular prism, polar robots have a spherical range. Their range of motion has a radius equal to the length of the link connecting the EOAT and the nearest revolute joint. This configuration allows polar robots to have the farthest reach for a given arm length compared to other robot types. The range of a polar robot can be further extended using a second link connected by a prismatic joint. Because of their wide reach, polar robots are commonly used in machine loading applications.
Cylindrical Robot: As the name suggests, a cylindrical robot has a cylindrical range of motion. This type consists of one revolute joint and two prismatic joints. The revolute joint is located at the arm's base, allowing the rotation of the links about the robot's axis. The two prismatic joints are used for adjusting the radius and height of the robot’s cylindrical work envelope. In compact designs, the prismatic joint used for adjusting the arm’s radius is eliminated. This one revolute, one prismatic joint configuration is useful in simple pick and place operations where the product feed is located only in one place.
Selective Compliant Articulated Robot Arm (SCARA): A SCARA is a type of robot with an arm that is compliant or flexible in the horizontal or XY-plane but rigid in the vertical direction or Z-axis. Its translational movement on a single plane describes its “Selective Compliant” characteristic. A SCARA has two links, two revolute joints, and a single prismatic joint. The links and the base are connected by the revolute joints oriented at the same axis. The prismatic joint is only for raising or lowering the EOAT. The resulting work envelope of a SCARA is a torus. Its application is similar to that of a cylindrical robot.
Delta Robot: A delta robot consists of at least three links connected to an EOAT and a common base. The EOAT is connected to the links by three undriven universal joints. On the other hand, the base is connected by either three prismatic or revolute-driven joints. The driven joints work together to allow the EOAT to have four degrees of freedom. For designs using prismatic joints, a fourth link or shaft is usually connected to the EOAT to enable rotation. The EOAT of a delta robot can move along all Cartesian axes and rotate around the vertical axis, resulting in a dome-shaped work envelope. The simultaneous action of the three driven joints makes delta robots suitable for high-speed pick and place applications.
Articulated Robot or Anthropomorphic Robot: Articulated robots are the most common robots used in manufacturing processes. They perform more complex operations such as welding, product assembly, and machining. EOATs mounted on articulated robots are designed to have a full six degrees of freedom. The robot arm consists of at least three revolute joints. A fourth revolute joint can be added to the wrist of the arm for rotating the EOAT. Its work envelope is also spherical, similar to that of the polar robot type.

Chapter 5: What are performance specifications for industrial robots?

When selecting a specific robot, various design factors must be considered. Different applications demand specific performance parameters that must be weighed against the required investment. While higher specifications generally offer better performance, the associated costs increase almost exponentially.

Number of Axes or Degrees of Freedom: The number of axes and degrees of freedom define the ability of a robot to move and orient the EOAT across a three-dimensional space. The definition of the degrees of freedom is in regard to the direction of a motion and the types of motion. The six degrees of freedom are forward or backward, up or down, left or right, yaw, pitch, and roll. Depending on a robot’s design, it can have all six axes, with a higher number giving it greater flexibility for its robotic arm.

Typical industrial robots used in simple pick and place applications have three to five axes, while robots used for more versatile applications have a full six degrees of freedom or more. For example, an assembly robot may have four degrees of freedom, while a robot performing complex operations such as welding may have over six degrees of freedom to be able to perform highly complex procedures.
Load Capacity: Load capacity is the weight that the robot can carry or the amount of force that the robot exerts on a load and what a robot can tolerate. Robots' load capacities vary according to the industry where they are used, with the range of capacities from 1.1 to over 2205 lbs (0.5 to 1000 kg). The specifications of load capacity are important in pick and place applications. The stated load capacity of modern robots is based on the maximum payload stated, including the need to accelerate or decelerate the payload and end effector to and from the maximum stated speeds of the robot. A close consideration of the weight of end effectors integrated into a robot serves as a guide in selecting the proper robot to fit the load capacity of an application.
Accuracy and Repeatability: These are the two main characteristics determining the effectiveness of a robot in performing its tasks. Accuracy refers to the ability of a robot to position itself or its load at a specific point, which is measured by determining how close its final state is to a set state defined by the user.

Repeatability is the measure of how the robot maintains its final position across several operating cycles. This is measured by getting the average of the distances between the final positions of the EOAT or a point on the robot after each cycle. Repeatability is the primary concern when selecting a robot, as a pre-programmed position can always be “touched up” to get the robot where it needs to be, but the repeatability of a robot defines the consistency of an operation.

These usual definitions of accuracy and repeatability are known as the static case, which pertains to the ability of the robot to bring itself to a certain displacement. They are used to evaluate the path, position, and orientation of a robot and are necessary factors that must be achieved every time a robot and end effector is set in motion.

These usual definitions of accuracy and repeatability are known as the static case, which only pertains to the ability of the robot to bring itself to a certain displacement. Accuracy and repeatability can also be applied to the speed and acceleration of the robot.
Work Envelope: The work envelope is the spatial specification of a robot, which is defined by its swept area, reach, and stroke. The work envelope's essential part is the space the robot's EOAT can access. The size of the work envelope depends on the type of robotic arm (Cartesian, polar, SCARA, etc.) and the length of its linkages. The parameters of the work envelope are important for machine loading and unloading applications. A larger robot requires a bigger work envelope that necessitates greater space, which must be determined prior to installation.

The function of the work envelope is to control and define the area a robotic arm may reach, which is important for creating safe zones for workers in the area of the robot. Understanding the work envelope is essential since everything a robot does is associated with its work envelope.
Maximum Speed and Acceleration: Speed and acceleration directly influence the design operating speed and throughput of a robot. These properties depend on the kinematic design of the arm and power ratings of the robotic system's driver, actuators, and transmission components. Although increasing speed may seem to be the ideal condition for improving efficiency, time is involved in speeding up a robot and slowing it down, affecting efficiency. Sudden changes in speed or high acceleration can exert forces on a robot that can compromise its structure, containment, or quality.
Controller Specifications: Every robot is supplied with its own controller, designed to operate it and allow programming of its positions, speeds, and clamping or unclamping grippers. Different brands of robots have different programming methods. Some controllers offer "teach through" programming where you use a “teach pendant” to jog the robot to the various positions, “record” that position, and use it in the program. Another method most controllers offer is creating structured or sequenced code, similar to “C” or BASIC programming, where you create a sequence of moves or I/O operations to perform a task.

Conclusion

An industrial robot is an autonomous system of sensors, controllers, and actuators that executes specific functions and operations in a manufacturing or processing line.
Collaborative robots, or cobots, are designed to work simultaneously and near a human operator. They are equipped with speed and force limiters to allow safe operation around humans.
The advantages of industrial robots are a faster operating rate, higher load capacity, accuracy and repeatability, improved workplace safety, better product quality, lower operating cost, and a more compact workspace.
Common applications of industrial robots are product assembly, machine loading, palletizing, welding, deburring, painting, coating, and inspection.
The six types of industrial robots are Cartesian, polar, cylindrical, SCARA, delta, and articulated.