Industrial Machinery Mechanics, Machinery Maintenance Workers, and Millwrights

Career, Salary and Education Information

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What Industrial Machinery Mechanics, Machinery Maintenance Workers, and Millwrights Do[About this section] [To Top]

Industrial machinery mechanics and machinery maintenance workers maintain and repair factory equipment and other industrial machinery, such as conveying systems, production machinery, and packaging equipment. Millwrights install, dismantle, repair, reassemble, and move machinery in factories, power plants, and construction sites.

Duties of Industrial Machinery Mechanics, Machinery Maintenance Workers, and Millwrights

Industrial machinery mechanics, machinery maintenance workers, and millwrights typically do the following:

  • Read technical manuals to understand equipment and controls
  • Disassemble machinery and equipment when there is a problem
  • Repair or replace broken or malfunctioning components
  • Perform tests and run initial batches to make sure that the machine is running smoothly
  • Detect minor problems by performing basic diagnostic tests
  • Test malfunctioning machinery to determine whether major repairs are needed
  • Adjust and calibrate equipment and machinery to optimal specifications
  • Clean and lubricate equipment or machinery
  • Move machinery and equipment

Industrial machinery mechanics, also called maintenance machinists, keep machines in working order by detecting and correcting errors before the machine or the products it produces are damaged. Many of these machines are increasingly run by computers. Industrial machinery mechanics use technical manuals, their understanding of industrial equipment, and observation to determine the cause of a problem. For example, after detecting a vibration from a machine, they must decide whether it is the result of worn belts, weak motor bearings, or some other problem. They may use computerized diagnostic systems and vibration analysis techniques to help figure out the source of problems. Examples of machines they may work with are robotic welding arms, automobile assembly line conveyor belts, and hydraulic lifts.

After diagnosing a problem, the industrial machinery mechanic may take the equipment apart to repair or replace the necessary parts. Once a repair is made, mechanics test a machine to ensure that it is operating correctly.

In addition to working with hand tools, mechanics commonly use lathes, grinders, and drill presses. Many also are required to weld.

Machinery maintenance workers do basic maintenance and repairs on machines. They clean and lubricate machinery, perform basic diagnostic tests, check the performance of the machine, and test damaged machine parts to determine whether major repairs are necessary.

Machinery maintenance workers must follow machine specifications and adhere to maintenance schedules. They perform minor repairs, generally leaving major repairs to industrial machinery mechanics.

Maintenance workers use a variety of tools to do repairs and preventive maintenance. For example, they may use a screwdriver or socket wrenches to adjust a motor's alignment, or they might use a hoist to lift a heavy printing press off the ground.

Millwrights install, maintain, and disassemble industrial machines. Putting together a machine can take a few days or several weeks.

Millwrights perform repairs that include replacing worn or defective parts of machines. They also may be involved in taking apart the entire machine, a common situation when a manufacturing plant needs to clear floor space for new machinery. In taking apart a machine, millwrights carefully disassemble, categorize, and package each part of the machine.

Millwrights use a variety of hand tools, such as hammers and levels, as well as equipment for welding, brazing, and cutting. They also use measuring tools, such as micrometers, measuring tapes, lasers, and other precision-measuring devices. On large projects, they commonly use cranes and trucks. When millwrights and managers determine the best place for a machine, millwrights use forklifts, hoists, winches, cranes, and other equipment to bring the parts to the desired location.

Work Environment for Industrial Machinery Mechanics, Machinery Maintenance Workers, and Millwrights[About this section] [To Top]

Industrial machinery mechanics, machinery maintenance workers, and millwrights hold about 476,100 jobs. Employment in the detailed occupations that make up industrial machinery mechanics, machinery maintenance workers, and millwrights is distributed as follows:

Industrial machinery mechanics 346,900
Maintenance workers, machinery 89,700
Millwrights 39,500

The largest employers of industrial machinery mechanics, machinery maintenance workers, and millwrights are as follows:

Manufacturing 54%
Commercial and industrial machinery and equipment (except automotive and electronic) repair and maintenance 9
Wholesale trade 9
Construction 6

Injuries and Illnessesfor Industrial Machinery Mechanic, Machinery Maintenance Worker, and Millwright

Industrial machinery mechanics and machinery maintenance workers have higher rates of injuries and illnesses than the national average. To avoid injuries, workers must follow safety precautions and use protective equipment, such as hardhats, safety glasses, steel-toed shoes, gloves, and earplugs.

Industrial Machinery Mechanic, Machinery Maintenance Worker, and Millwright Work Schedules

Most industrial machinery mechanics and machinery maintenance workers are employed full time during regular business hours. However, mechanics may be on call and work night or weekend shifts. Overtime is common, particularly for mechanics.

How to Become a Industrial Machinery Mechanic, Machinery Maintenance Worker, or Millwright[About this section] [To Top]

Get the education you need: Find schools for Industrial Machinery Mechanics, Machinery Maintenance Workers, and Millwrights near you!

Industrial machinery mechanics, machinery maintenance workers, and millwrights typically need a high school diploma. Industrial machinery mechanics and machinery maintenance workers also usually need a year or more of training after high school.

Most millwrights go through an apprenticeship program that lasts about 4 years.

Education for Industrial Machinery Mechanic, Machinery Maintenance Worker, and Millwright

Industrial machinery mechanics, machinery maintenance workers, and millwrights generally need at least a high school diploma or equivalent. Some mechanics and millwrights complete a 2-year associate's degree program in industrial maintenance. Industrial maintenance programs may include courses such as welding, mathematics, hydraulics, and pneumatics.

Industrial Machinery Mechanic, Machinery Maintenance Worker, and Millwright Training

Industrial machinery mechanics and machinery maintenance workers typically receive more than a year of on-the-job training. Industrial machinery mechanics and machinery maintenance workers learn how to perform routine tasks, such as setting up, cleaning, lubricating, and starting machinery. They also may be instructed in subjects such as shop mathematics, blueprint reading, proper hand tool use, welding, electronics, and computer programming. This training may be offered on the job by professional trainers hired by the employer or by representatives of equipment manufacturers.

Most millwrights learn their trade through a 3- or 4-year apprenticeship. For each year of the program, apprentices must have at least 144 hours of relevant technical instruction and up to 2,000 hours of paid on-the-job training. On the job, apprentices learn to set up, clean, lubricate, repair, and start machinery. During technical instruction, they are taught welding, mathematics, how to read blueprints, and machinery troubleshooting. Many also receive computer training.

After completing an apprenticeship program, millwrights are considered fully qualified and can usually perform tasks with less guidance.

Employers, local unions, contractor associations, and the state labor department often sponsor apprenticeship programs. The basic qualifications for entering an apprenticeship program are as follows:

  • Minimum age of 18
  • High school diploma or equivalent
  • Physically able to do the work

Important Qualities for Industrial Machinery Mechanic, Machinery Maintenance Worker, and Millwright

Manual dexterity. Industrial machinery mechanics, machinery maintenance workers, and millwrights must have a steady hand and good hand–eye coordination when handling very small parts.

Mechanical skills. Industrial machinery mechanics, machinery maintenance workers, and millwrights use technical manuals and sophisticated diagnostic equipment to figure out why machines are not working. Workers must be able to reassemble large, complex machines after finishing a repair.

Troubleshooting skills. Industrial machinery mechanics, machinery maintenance workers, and millwrights must observe, diagnose, and fix problems that a machine may be having.

Industrial Machinery Mechanic, Machinery Maintenance Worker, and Millwright Salaries[About this section] [More salary/earnings info] [To Top]

The median annual wage for industrial machinery mechanics, machinery maintenance workers, and millwrights is $49,100. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $31,440, and the highest 10 percent earned more than $75,220.

Median annual wages for industrial machinery mechanics, machinery maintenance workers, and millwrights are as follows:

Millwrights $52,440
Industrial machinery mechanics 50,040
Maintenance workers, machinery 44,550

The median annual wages for industrial machinery mechanics, machinery maintenance workers, and millwrights in the top industries in which they work are as follows:

Manufacturing $49,340
Construction 48,790
Wholesale trade 47,600
Commercial and industrial machinery and equipment (except automotive and electronic) repair and maintenance 44,540

Most industrial machinery mechanics and machinery maintenance workers are employed full time during regular business hours. However, mechanics may be on call or assigned to work night or weekend shifts. Overtime is common, particularly for mechanics.

Job Outlook for Industrial Machinery Mechanics, Machinery Maintenance Workers, and Millwrights[About this section] [To Top]

Overall employment of industrial machinery mechanics, machinery maintenance workers, and millwrights is projected to grow 7 percent over the next ten years, about as fast as the average for all occupations. Employment growth will vary by occupation.

The increased adoption of sophisticated manufacturing machinery will require more mechanics and millwrights to keep machines in good working order. Increased automation, including the use of many computer-controlled machines in factories and manufacturing plants, should raise the demand for machinery maintenance workers in order to keep the machines functioning properly. The increased use of machinery in manufacturing will require millwrights to install and disassemble this equipment, as well as perform some repair work on it.

Job Prospects for Industrial Machinery Mechanic, Machinery Maintenance Worker, and Millwright

Job prospects will be good, particularly for applicants with a broad range of skills in machine repair as older workers retire or otherwise leave the occupation.

Employment projections data for Industrial Machinery Mechanics, Machinery Maintenance Workers, and Millwrights, 2016-26
Occupational Title Employment, 2016 Projected Employment, 2026 Change, 2016-26
Percent Numeric
Industrial machinery mechanics, machinery maintenance workers, and millwrights 476,100 508,500 7 32,400
  Industrial machinery mechanics 346,900 370,400 7 23,500
  Maintenance workers, machinery 89,700 94,700 6 5,000
  Millwrights 39,500 43,400 10 3,900


*Some content used by permission of the Bureau of Labor Statistics, U.S. Department of Labor.

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