Balancing certification and training for millwrights
Field balancing a fan or a roll is a skill that gets you noticed. Here is what training and certification exist, and how balancing shows up on your Red Seal exam.
Checked as of November 2026. Fees are in US dollars. Check with the provider before you book.
What it is and who it's for
Balancing finds the heavy spot on a rotor and corrects it by adding or removing weight. Shop balancing is done on a balancing machine. Field balancing is done in place, with a vibration meter and a phase reference. It suits millwrights who look after fans, blowers, rolls, pumps and motors.
Who issues it
- Vibration Institute: runs a Balancing Specialist program. The Institute says this program is not accredited by ANAB, unlike its vibration analyst program.
- Vibration analyst categories: balancing is one topic inside the ISO 18436-2 vibration categories. See our vibration analyst guide.
- Training companies and tool makers: run balancing courses that give a certificate of completion.
We found no Canadian body that certifies balancing on its own.
Required or voluntary?
Voluntary. No province requires a balancing certificate.
Training, exam and cost
The Vibration Institute's Balancing of Rotating Machinery course runs Monday to Friday noon. It covers single-plane and two-plane balancing, shop and field balancing, and Bode and polar plots. The course page lists a balancing specialist exam at $360 USD, scheduled outside the course, usually about three hours on the Saturday morning after. It doesn't list prerequisites or renewal. Check current details with the Vibration Institute.
How it connects to the Red Seal exam
Balancing is listed in task F-25, "Performs maintenance and testing", in the Red Seal exam weightings, alongside vibration analysis and preventive maintenance. F is 13 % of the exam, and F-25 is 70 % of F.
How CrewForge helps
Balancing and vibration lessons are coming in the CrewForge program. In the meantime, the free shaft alignment simulator covers the misalignment you should rule out before you balance. Our material is Red Seal prep and doesn't count toward any certification.
Practice questions
Written by CrewForge for practice. Not taken from any certification exam or course.
1. A 5 g heavy spot sits 100 mm from the centre of a rotor. What is the unbalance?
500 g·mm. Unbalance = mass × radius = 5 × 100.
2. A 10 g unbalance sits 150 mm from the centre of a fan turning 1,800 rpm. What force does it put on the bearings?
About 53 N (12 lbf). F = m × r × ω². ω = 1,800 × 2π ÷ 60 = 188.5 rad/s. F = 0.010 kg × 0.150 m × 188.5² = 53.3 N. 53.3 ÷ 4.448 = 12.0 lbf.
3. The same fan is sped up to 3,600 rpm. What happens to that force?
It goes up four times, to about 213 N. Force rises with speed squared. Double the speed, four times the force.
4. What's the difference between static and couple unbalance?
Static unbalance is one heavy spot in line with the centre of gravity. You can fix it in one plane. Couple unbalance is two equal heavy spots at opposite ends, 180° apart. The rotor rocks end to end, and you need two planes to fix it.
5. A fan's 1× vibration is high. What should you check before you balance it?
The basics. Look for build-up or missing blade parts, looseness, a bad base, and misalignment. Balancing a loose or misaligned machine won't fix it.
Learn the physics behind the fix
CrewForge is building Red Seal millwright lessons where every formula comes with a picture of what it means.
CrewForge is not affiliated with or endorsed by the Vibration Institute or any balancing equipment maker or training provider.