IFPS Industrial Hydraulic Mechanic exam guide
The Industrial Hydraulic Mechanic (IHM) is the hydraulics credential that fits a millwright best. Here is how the tests work, what they cost, and the other IFPS paths.
Facts checked on the IFPS website as of November 2026. Fees are in US dollars and can change. Check with IFPS before you register.
What it is and who it's for
The IHM shows you can install, maintain and troubleshoot industrial hydraulic systems. It's for millwrights and mechanics who work on presses, injection moulding machines, mill hydraulics and power units.
Who issues it
The International Fluid Power Society (IFPS), based in the United States. Membership is not required, but members pay less.
Required or voluntary?
Voluntary in Canada. No province requires it. Some employers list it in job postings.
Prerequisites
IFPS lists no prerequisites for the Mechanic tests. Your registration must reach IFPS at least 30 days before your test date (IFPS FAQ).
Exam format
- Written test: 75 questions, 70 % to pass, three hours.
- Job performance test: six hands-on stations, such as identifying fittings, fasteners and fluid power symbols. You need 70 % overall and a minimum score at each station.
Cost (USD, as of November 2026)
| Test | Professional member | Non-member |
|---|---|---|
| Written | $229 | $395 |
| Job performance | $195 | $285 |
These are IFPS's Mechanic, Technician and Connector & Conductor fees on its fee policy page. Student and retake fees are lower. Confirm the fee for your exact certification with IFPS.
Renewal
Valid five years. Renew before it expires: $110 USD for a professional member's first certification, or $280 USD for a non-member. If it has lapsed for more than a year, you must retest.
Other IFPS paths
| Tier | Certifications | Tests |
|---|---|---|
| Mechanic | Industrial Hydraulic, Mobile Hydraulic, Pneumatic | 75-question written + job performance |
| Technician | Industrial Hydraulic, Mobile Hydraulic, Pneumatic | 75-question written + job performance |
| Connector & Conductor | Hose, tube and fittings | 75-question written + job performance |
| Specialist | Hydraulic, Pneumatic, Electronic Controls | 50 questions, 70 % to pass |
For most millwrights: start with Industrial Hydraulic Mechanic. Add Pneumatic Mechanic if you work on a lot of air systems. Go to Technician when you troubleshoot and set up circuits.
How it connects to the Red Seal exam
Fluid power is major work activity E: 15 % of the 135-question Red Seal exam. Hydraulics (E-23) is 53 % of that, about 11 questions, and pneumatics and vacuum (E-24) is 47 %, about 10 (our estimates).
How CrewForge helps
Try the free hydraulic cylinder circuit simulator: a pump, relief valve and directional valve driving a cylinder. See the pressure the load needs and the rod speed from pump flow. It builds the maths both exams use. It is not IFPS training and doesn't count toward an IFPS certification.
Practice questions
Written by CrewForge for practice. Not taken from any IFPS exam.
1. A cylinder has a 3 in bore. Pressure is 1,500 psi. What force does it push with?
About 10,600 lb. Area = π × 1.5² = 7.07 in². Force = pressure × area = 1,500 × 7.07 = 10,603 lb.
2. A 10 gpm pump feeds that same 3 in bore cylinder. How fast does it extend?
About 5.4 in/s. One US gallon is 231 in³. Flow = 10 × 231 = 2,310 in³/min. Speed = flow ÷ area = 2,310 ÷ 7.07 = 327 in/min, or 5.4 in/s.
3. The cylinder has a 1.5 in rod. Does it retract faster or slower than it extends, at the same flow?
Faster: about 7.3 in/s. On retract, oil fills the annulus, which is smaller: 7.07 − 1.77 = 5.30 in². Speed = 2,310 ÷ 5.30 = 436 in/min. Less area for the same flow means more speed (and less force).
4. A cylinder has an 80 mm bore. Pressure is 100 bar. What force does it push with?
About 50 kN. Area = π × 0.040² = 0.00503 m². 100 bar = 10 MPa = 10,000,000 Pa. Force = 10,000,000 × 0.00503 = 50,300 N.
5. The load needs 2,500 psi, but the relief valve is set at 2,000 psi. What happens?
The cylinder stalls. Pressure can't rise past the relief setting, so the pump flow goes over the relief to tank. That flow turns into heat. Don't just turn the relief up: check the rating of every component first.
Fluid power is 15 % of your Red Seal exam
CrewForge lessons cover pumps, valves, cylinders and circuits, with a simulator that shows every formula as a picture.
CrewForge is not affiliated with or endorsed by the International Fluid Power Society.