Vibration Severity: ISO_10816_1_CLASS_I
Machinery vibration severity evaluation criteria — zone boundaries (A/B/C/D) for bearing housing velocity (mm/s RMS) and shaft displacement (micrometers pk-pk) per ISO 10816-1/3, ISO 20816-1/2/3, ISO 7919-3, API 610/617/611/612, NEMA MG1, VDI 3839, and ISO 14694. Covers ISO 10816-3 Groups 1 and 2 (rigid and flexible mount), ISO 10816-1 Classes I–IV, API centrifugal pump/compressor/steam turbine limits, rotodynamic pump zones, hydraulic machine zones, reciprocating machine limits, fan vibration limits, general alarm/trip multipliers, and summary lookup records.
| standard class | zone or limit | description | machine group | mounting | notes | power kw max (kW) | unit | zone A max mm s (mm/s) | zone B max mm s (mm/s) | zone C max mm s (mm/s) | zone interpretation |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ISO_10816_1_CLASS_I | ZONE_LIMITS | Class I small machines <=15 kW - all zone boundaries | Class_I_Small | any | ISO 10816-1 Class I: small machines with shaft heights up to 15 kW; individual machine parts (production motors small pumps); zone D threshold = 4.5 mm/s | 15 | mm/s RMS | 0.71 | 1.8 | 4.5 | Zone A: <=0.71; Zone B: 0.71-1.8; Zone C: 1.8-4.5; Zone D: >4.5 |
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ALARM_TRIP_GENERAL2 rowsAPI_610_PUMP3 rowsAPI_611_TURBINE1 rowAPI_612_TURBINE1 rowAPI_617_COMPRESSOR2 rowsISO_10816_1_CLASS_II1 rowISO_10816_1_CLASS_III1 rowISO_10816_1_CLASS_IV1 rowISO_10816_3_GRP1_FLEXIBLE3 rowsISO_10816_3_GRP1_RIGID3 rowsISO_10816_3_GRP2_FLEXIBLE3 rowsISO_10816_3_GRP2_RIGID3 rows