ISO10816 Charts

Why ISO 10816 is important for vibration measurement engineers?

The main target of condition monitoring and machinery protection systems is to ensure the health and continuous operation of the plant machinery. In this regard vibration measurement systems along with vibration transducers are installed for continuous measurement and analysis of machine vibrations. To this end users need a reference to compare machine vibration with it to evaluate the state of each machine. ISO 10816 provides a reference like allowable vibrations and alarm or trip conditions for various machinery based on some statistical analysis of historical data gathered by ISO TC 108.

ISO 10816 has been one of the first and mostly developed standards for vibration evaluation of machinery including different type of machinery like wind turbine, hydro turbine, gas turbine & steam turbines, reciprocating machinery, etc.

ISO 10816-1


General Machines

ISO 10816-1 is a basic document which sets out general guidelines for the measurement and evaluation of mechanical vibration of machines, as measured on non-rotating parts. The machine classifications are as follows:



Steam Turbine and Generators

ISO 10816-2 is used for measurement of vibrations by accelerometer or velocity transducers on fixed parts like bearing housings of large land based turbines &

generators over 50 MW & rotational speeds from 1500 to 3600 RPM



Critical Machines

ISO 10816-3 is mainly applied to vibration measurement of industrial machines like electro motors powered above 15 KW and speed range (120 RPM-15000RPM)

by accelerometer or velocity transducers on fixed parts like bearing housings



Gas Turbines

ISO 10816-4 is mainly applied to vibration measurement of land based gas turbine with speed range (3000 RPM-20000RPM) by accelerometer or velocity transducers on fixed parts like bearing housings/ pedestals

NOT: These Values, Which are the upper limits of zone A,B and C Respectively, Should apply to radial vibration measurements on all bearing housings or pedestals and to axial vibration measurements on housings containing an axial thrust bearing, under steady-state operating conditions at rated this figure shows typical measurement positions.



Hydro Turbine

This part of ISO 10816 gives guidelines for applying bearing housing vibration evaluation criteria measured under normal operating conditions at the bearings, bearing pedestals or bearing housings of the main machine sets in hydraulic power generating and pumping plants. ISO 10816-5 is applicable to machine sets with speeds from 60 r/min to 1800 r/min, shell or shoe type sleeve bearings and a main engine power of 1 MW and more. The position of the shaft line may be vertical, horizontal or at an arbitrary angle between these two directions.



Reciprocating Machinery

ISO 10816-6 specifies the general conditions and procedures for the measurement and evaluation of vibration, using measurements made on the non-rotating and non-reciprocating parts of reciprocating machines. It generally applies to reciprocating piston machines mounted either rigidly or resiliently with power ratings of above 100 kW. Typical examples of application are: marine propulsion engines, marine auxiliary engines, engines operating in diesel generator sets, gas compressors and engines for diesel locomotives. The general evaluation criteria which are presented relate to both operational monitoring and acceptance testing. They are also used to ensure that the machine vibration does not adversely affect the equipment directly mounted on the machine.




ISO 10816-7 gives instructions for the evaluation of vibration on rotary pumps for industrial applications with nominal power above 1 kW. It defines the special requirements for evaluation of vibration when the vibration measurements are made on non-rotating parts (bearing housing vibration). It provides specific guidance for assessing the severity of vibration measured on bearing housings of rotary pumps in situ and for the acceptance test at the manufacturer’s test facility or in the plant.

This part of ISO 10816 also gives general information and guidelines for assessing relative shaft vibration of the rotating shaft.

This part of ISO 10816 specifies zones and limits for the vibration of horizontal and vertical pumps irrespective of their support flexibility. Additionally, recommendations are given for defining operational limits and setting alarm and trip values.



Reciprocating Compressors

This part of ISO 10816 establishes procedures and guidelines for the measurement and classification of mechanical vibration of reciprocating compressor systems. The vibration values are defined primarily to classify the vibration of the compressor system and to avoid fatigue problems with parts in the reciprocating compressor system, i.e. foundation, compressor, dampers, piping, and auxiliary equipment mounted on the compressor system.

This part of ISO 10816 applies to reciprocating compressors mounted on rigid foundations with typical rotational speed ratings greater than 120 r/min and up to and including 1800 r/min. The machinery driving the reciprocating compressor, however, is evaluated in accordance with the appropriate part of ISO 10816 or other relevant International Standards and classification for the intended duty. Examples of reciprocating compressor systems covered by this part of ISO 10816 are
  • horizontal, vertical, V-, W-, and L-type compressor systems,
  • constant and variable speed compressors,
  • compressors driven by electric motors, gas, and diesel engines, steam turbines, with or without a gearbox, flexible or rigid coupling, and
  • dry running and lubricated reciprocating compressors.



Onshore wind turbines with gearbox

ISO 10816-21 specifies the measurement and evaluation of mechanical vibration of wind turbines and their components by taking measurements on non-rotating parts. It applies to WTs with rated generator outputs exceeding 100 kW but less than or equal to 3 MW, and the following design and operational characteristics:

siting onshore, Installation on supporting systems (tower and foundation) made of steel and concrete, horizontal-axis rotor with several rotor blades, rotor bearing separate from or integrated into the gearbox, generators driven via gearbox, generators of the synchronous or asynchronous type with only a fixed pole number or which are pole-changeable for speed adjustment, generator coupled to the power grid via converter or directly.