Free Engineering Tool
Hydraulic Oil Cleanliness Analyzer
ISO 4406 code calculator with target cleanliness lookup, filter β-ratio recommendation, and sampling interval guidance by component type.
Analysis Results
ISO 4406 Code Scale
Each code number R represents a particle count range: 2^(R-1) × 0.01 to 2^R × 0.01 particles per mL (simplified). The code doubles with each increment.
Target Cleanliness by Component
| Component | Target ISO Code | Filter μm | β-ratio |
|---|---|---|---|
| Servo valves | 16/14/11 | 3 μm | β₃ ≥ 200 |
| Proportional valves | 18/16/13 | 6 μm | β₆ ≥ 200 |
| Piston pumps/motors | 17/15/12 | 6 μm | β₆ ≥ 200 |
| Vane pumps | 18/16/13 | 10 μm | β₁₀ ≥ 200 |
| Gear pumps, std. valves | 20/18/15 | 10 μm | β₁₀ ≥ 75 |
| Cylinders only | 21/19/16 | 25 μm | β₂₅ ≥ 75 |
Cleanup Time Estimation
Approximate cleanup passes needed to reduce contamination by one ISO code level:
Practical Example
Target: 16/14/11 → need to reduce by 4 code levels
Each code level ≈ 2 system turnovers through proper filtration
200 L system, 60 L/min flow: turnover = 200/60 = 3.3 min
Est. cleanup: 4 levels × 2 turnovers × 3.3 min ≈ 26 minutes of kidney-loop filtration
Professional instruments. Used in 50+ countries.
Nikolai Shelkovenko
Nikolai Shelkovenko is a vibration analysis engineer and the founder and CEO of Vibromera. For more than 15 years he has balanced rotating equipment in the field rather than on a test bench: mulchers, industrial fans, crushers, centrifuges, shafts and spindles. That work is what the Balanset instruments grew out of — they were designed as a tool a specialist can carry to the machine and use alone, on site, not as laboratory equipment. Vibromera was founded in 2017 and has been based in Porto, Portugal, since 2023. Development, assembly and support of the Balanset line all happen here. The flagship instrument is the Balanset-1A, a portable analyser for single- and two-plane balancing and for vibration diagnostics. Nikolai is personally involved in customer support, in working through difficult balancing cases and in the development of the software. He works with customers worldwide, in any language.
