Download a printer-friendly version of this document (PDF format)


Free Fall Vs. Pneumatic Shock Machine
TDS-2
Specifications for Pneumatic Shock Machine
Specifications for Free Fall Shock Machine

a. Pneumatic Shock Machine has Velocity of 330 in/sec standard. Free Fall only 200 in/sec. In addition, an air amplifier may be readily added to the Pneumatic Shock Machine to virtually double its velocity capability.

b. Pneumatic Shock Machine is only 6 ft tall. Free Fall can be as high as 12 – 14 ft., which can pose ceiling problems.

c. Pneumatic Shock Machine equipped with SAFETY SHIELD standard so that operator can not place hands under shock carriage. Free Fall does not offer.

d. Pneumatic Shock Machine can provide 8 shocks/minute. Free Fall cannot.

e. Pneumatic Shock Machine can abort readily if table is set and ready to shock. Free Fall cannot lower readily.

f. Pneumatic Shock Machine has no structure on the sides of the carriage to prevent test item from overhanging, if necessary. Free Fall has Thompson Rod and Bearings, which does not permit for any test item to be larger than the shock carriage.

g. Pneumatic Shock Machine has no restriction on test item height. Free Fall may have limitations due to lifting mechanism.

h. All the controls for the Pneumatic Shock Machine are located on the base of the machine itself. Free Fall controls are located on a remote bay away from the machine.

i. The Pneumatic Shock Machine carriage is situated around 5 ft. (shoulder level) for ease of test item set up. Free Fall machine is low to the ground so that the operator must bend over to load/unload test specimen.

j. M/RAD manufactures both Free Fall and Pneumatic Shock Machines. The majority of M/RAD customers purchase Pneumatic.