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Reliability of the pneumatic components used in safety systems b10 d values to use in application of EN ISO 13849-1
Reference: ISO 19973 - Pneumatic Fluid Power - Assessment of component reliability by testing


b10 d is the number of cycles until 10% of the components fail dangerously.


In pneumatic, mechanical and electromechanical technology, the life and reliability of components generally depends on wear linked to movements. Their life is also strongly affected by the working conditions, especially the following:

  • Compressed air quality and conditions
  • Lubricant compatibility with gaskets
  • Temperature
  • Environmental factors as such dust, gas and fluids. .

It is vital for the component manufacturer's requirements to be complied with, otherwise the failure parameters are not valid.

Product operating conditions are shown in Metal Work�s General Catalogue.

Unless specified otherwise in the catalogue, compressed air must be class 3-4-3, in accordance with ISO 8573-1.

Product family

b10 d [cycles]


ISO15552 cylinders, round cylinders, series RNDC, polyurethane gaskets

30.000 km
corresponding to75x106 cycles with a reference stroke of 200mm

ISO 15552 cylinders, round cylinders, series RNDC, low-temperature NBR and FKM gaskets

15.000 km
corresponding to 37x106 cycles with an average stroke of 200mm

ISO6432 cylinders, SSC cylinders, compact cylinders, liner cylinders, stopper cylinders, polyurethane gaskets

60x106 cycles

ISO6432 cylinders, SSC cylinders, compact cylinders, liner cylinders, compact guided cylinders, low-temperature NBR and FKM gaskets

30x106 cycles

Flat Two cylinders

15 x106 cycles

Rodless cylinders

10.000 km
corresponding to 25x106 cycles with a reference stroke of 200mm

Hydraulic brakes, series BKK, integrated hydraulic brake

5 x106 cycles

Other standard cylinders in the catalogue

Greater than or equal to 15 x106 cycles


Grippers series P1, P2, P3, P4, P7, P8, P9, P10, P11

5 x106 cycles

Rotary actuators series R1, series R2, series R3

10 x106 cycles

Slides series S10, series S11, series S12, series S13, series S14

10 x106 cycles

Guide units series GDH, series GDM, series GDS


Mechanical valves:
series VME, series 70 MEV

2 x106 cycles

Manually-operated valves:
series 70 MAV, series PEV pedal-operated, two-handed safety operation

1 x106 cycles

Pneumatic valves:
series 70 PNV, series Mach 16 MPV, series Mach 11 MPV, series NAMUR, series ISO5599 IPV, series Mach 18 MPV

50 x106 cycles

Solenoid valves:
series 70 SOV, series NAMUR, series ISO5599 ISV, series Mach 18 MSV, series Mach 11 MSV, series Mach 16 MSV, series Multimach, series HDM, series CM, series PIV.M, series PIV on base and in line, CNOMO, series Minimach, series PLT-10, series SOV-L

50 x106 cycles

Field bus (electronic only, without valves):
HDM+AS-interface, HDM+Profibus, input Profibus-DP, Profibus-DP dedicated Mach 16, Profibus-DP / Interbus-S / Can-open / Device 'net for Multimach

100 x106 cycles


The working life is calculated as the number of opening/closing cycles for valves and regulators, and the number of downstream pressure changes from 6.3 to 0 bar for the other components.

Filters, filter-purifiers, driers:
series Skillair, Bit, New Deal, ONE


Regulators and filters-regulators:
Series Syntesi, Skillair, Bit, New Deal, ONE, GS, Skilltronic, Regtronic, RML, RMC, RMS

10 x106 cycles


Series Syntesi, Skillair, Bit, New Deal

50 x106 cycles

V3V circuit shutoff valves:
series Syntesi, Skillair, New Deal, ONE

10 x106 cycles

Progressive starters, APR:
Series Syntesi, Skillair, ONE

10 x106 cycles

Pressure switches series PS

5 x106 cycles



50 x106 cycles


50 x106 cycles


50 x106 cycles


50 x106 cycles


50 x106 cycles


50 x106 cycles

Pneumatic logic

50 x106 cycles

Concesio, 23rd December 2009

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