Overview
ISO 10100:2020 - Hydraulic fluid power - Cylinders - Acceptance tests - defines acceptance and function tests for hydraulic fluid power cylinders. It specifies mandatory and optional test modules, test conditions, and the information to record for identity and characteristic parameters. The standard is intended to ensure cylinders meet leakage, sealing and performance expectations before delivery or installation.
Key topics and requirements
- Scope: Acceptance and functional testing of hydraulic cylinders (single- and double-rod types).
- Test modules:
- Module L (obligatory) - Basic leakage tests required for all cylinders (visual/sight tests and low-pressure cycling).
- Module P (optional) - Piston seal leakage test.
- Module F (optional) - Friction force test (static and dynamic friction measurements).
- Identity and characteristic data: Record type, port size/orientation, stroke length, model label, bore, rod diameter, mounting style, cushioning details, etc.
- Test fluid: Use hydraulic oil (or agreed liquid) compatible with cylinder seals and conforming to ISO 6743-4, ISO 7745 or ISO 15380.
- Fluid conditioning:
- Contamination level: Typically 19/16 or 19/16/13 (ISO 4406); for sensitive applications (servo valves, contamination-sensitive seals) use 16/13 or 16/13/10.
- Temperature: Maintain test fluid between 35 °C and 55 °C unless otherwise agreed.
- Rust inhibitors: Permitted if compatible with seals.
- Example leakage procedure (Module L): Cycle the cylinder ≥3 times at a low test pressure (500 kPa for bores >32 mm; 1 000 kPa for bores ≤32 mm), pause at an end position for ≥10 s and inspect for vibration or visible leakage.
- Friction testing (Module F): Includes measurement profiles such as sinusoidal movement and constant-speed tests to determine static and dynamic friction forces.
Applications and who uses it
ISO 10100:2020 is used for:
- Cylinder manufacturers - production acceptance testing and quality control.
- OEMs and system integrators - supplier acceptance and component verification.
- Test laboratories - performing standardized acceptance/function tests.
- Purchasers and maintenance teams - incoming inspection, warranty validation, and troubleshooting.
- Design engineers - validating component performance against expected friction and leakage characteristics.
Benefits include consistent acceptance criteria, reduced field failures, clearer supplier–buyer agreements, and improved system reliability.
Related standards
Keywords: ISO 10100:2020, hydraulic fluid power, cylinders acceptance tests, leakage test, piston seal leakage, friction force test, test fluids, contamination level, Module L, Module P, Module F.