NEES@UNR
NEES

Hydraulic Actuators

 

Six servo-controlled actuators are available for dynamic and cyclic load testing

 

MTS Actuator (Model 243.31)

 

This actuator has a load capacity of +/-55 kips (+/-250 kN), a stroke of +/-3 in. (+/-75 mm), and a composite servovalve system (Models 252.21C and 256.09) with flow rate of 91 gpm (345 lpm). The actuator has a load cell for measuring the forces and internal LVDT for measuring the displacements.

 

MTS Actuator (Model 244.41)

 

This actuator has a load capacity of +/-110 kips (+/-500 kN), a stroke of +/-11 in. (+/-275 mm), and a servovalve system (Model 252.25C) with flow rate of 15 gpm (55 lpm). The actuator has a load cell for measuring the forces and internal LVDT for measuring the displacements.

 

MTS Actuator (Model 244.41)

 

This actuator has a load capacity of +/-110 kips (+/-500 kN), a stroke of +/-11 in. (+/-275 mm), and a dual servovalve system (Model 252.33A) with a total flow rate of 120 gpm (450 lpm). The actuator has a load cell for measuring the forces and internal LVDT for measuring the displacements.

 

MTS Actuator (Model 244.51S)

 

This actuator has a load capacity of +/-220 kips (+/-1000 kN), a stroke of +/-15 in. (+/-375 mm), and a composite servovalve system (Models 252.21C and 256.09) with a total flow rate of 91 gpm (340 lpm). The actuator has a load cell for measuring the forces and internal LVDT for measuring the displacements.

 

MTS Actuator (Model 243.80)

 

This actuator has a load capacity of 460 kips (2050 kN) in compression and 300 kips (1335 kN) in tension, a stroke of +/-20 in. (+/-500 mm), and a servovalve system (Model 252.25C) with a total flow rate of 15gpm (55 lpm).

 

MTS Actuator (Model 243.90)

 

This actuator has a load capacity of +/-500 kips (+/-2225 kN), a stroke of +/-10 in. (+/-250 mm), and a servovalve system (Model 252.25C) with flow rate of 15 gpm (55 lpm).

 

MTS Actuator (Model 243.100T)

 

This actuator has a load capacity of 700 kips (3115 kN) in tension and 945 kips (4200 kN) in compression with a stroke of +/-48 in. (+/-1220 mm), and a dual servovalve system (Model 252.256) with flow rate of 15 gpm (55 lpm) each.

 

List of actuators available at the facility

Actuator Model
Load Capacity
Stroke
Servovalve
Rating
Photo
Kips
kN
inch
mm
gpm
lpm

243.31

55 (Compression)
55 (Tension)
250
250

6

150 91 340 Dynamic Picture
244.41
110 (Compression)
110 (Tension)
500
500
22 550 15 55 Static Picture
244.41
110 (Compression)
110 (Tension)
500
500
22 550 120 450 Dynamic Picture
244.51S
220 (Compression)
220 (Tension)
1000
1000
30 750 91 340 Dynamic Picture
243.80
460 (Compression)
300 (Tension)
2050
1335
40 1000 15 55 Static Picture
243.90
500 (Compression)
500 (Tension)
2225
2225
20 500 15 55 Static Picture
243.100T
945 (Compression)
700 (Tension)
4200
3115
48 1220 15 55 Static n/a