MTS Series 248 Actuators - Manual (Page 15)

Series 248 Actuator Component Identification
Series 248 Actuator Product Information Introduction 15
Series 248 Actuator Component Identification
Series 248 Component Identification
C OMPONENT D ESCRIPTION
Piston rod end The piston rod end has a center position internal thread and a circular pattern of
threaded holes for mounting vibration tables, load cells, swivels, and interface fixtures.
Piston The actuator is equipped with a double-ended piston rod. The double-ended piston has
equal areas on both sides for balanced performance. It is machined from a single piece
of heat-treated alloy steel, hard-chrome plated, and precision ground to a fine finish for
reliable operation. The piston rod is hollow to allow for installation and accurate
alignment of a displacement transducer. Grooves on the piston ensure adequate
lubrication of the piston surface during short-stroke, side-loaded tests.
Piston
Drainback Port
Pedestal Base
LVDT Assembly
Piston Rod Seal
Extension Port
Retraction Port
Piston Rod End
Hydrostatic Bearing
Piston Rod Seal