Discover Small But Mighty Modal Tools

Modal Punch and Inertial Shaker 

We’d like to re-introduce you to two tools that may get overlooked or forgotten but are useful to have in your modal testing toolbox: Inertial Shakers and the Modal Punch. Both tools are well-suited for use in hard-to-reach places. Read on to learn why we think you should give this pair of handy tools a chance! 

stp modal punch in hand productThe Modal Punch Model 088A is an ideal choice to reach excitation points that can’t otherwise be reached with a typical modal hammer or modal shaker, like inside an engine block. The modal punch is instrumented with a force transducer on the end for use with typical 086C series hammer tips. Instead of a typical modal hammer form factor it is, as the name implies, in the form of a punch. Simply use another non-instrumented tool to drive the punch and excite a hard-to-reach point on your test object. 

stp 2002e vibration test applicationAnother lesser-known tool is Miniature Inertial Shaker System Model K2002E01. Like the 088A Modal punch the inertial shaker is well-suited for use in hard-to-reach places that a typical modal shaker with stinger or modal hammer cannot be used. It is also a good choice for structural testing, transfer path analysis, and a variety of general vibration testing applications. Like a typical modal shaker, the 2002E inertial shaker can be combined with a piezoelectric force sensor (or impedance head) from PCB Piezotronics to create the ideal compact force generator with unmatched reliability, performance, and cost.

Do you have other questions about Modal Impact Hammers or Modal Shakers? Please visit our Modal Impact Hammer FAQ or Vibration Test Education Portal for additional resources. Plus, our team of application engineers is happy to answer any questions. Fill out the Contact an Expert form, give us a call at 513-351-9919, or send an email to with questions or requests.