User guide

Reaction Bases
Series 215 Rotary Actuator Product Manual Introduction
23
Reaction Bases
Reaction bases are constructed of heavy-duty steel and designed for high
torsional stiffness. They readily accept MTS rotary actuators and reaction
brackets. When used with MTS reaction brackets and foot mounting options, the
stiffness/flexural capability is adequate to prevent excessive actuator side loads.
(However, a review of thrust loads should be made.) When purchased as a
system, the specimen length is fully adjustable (within the specified limits)
without requiring realignment of the actuator and reaction bracket. If required,
legs are available to raise the bases to any specified height.
Reaction Base Dimensions and Ratings
M
ODEL LENGTH§WIDTH HEIGHT*MAXIMUM SPACE†
IN. MM IN. MM IN. MM IN. MM
215.32
45 1143 15 380 4.7 120 28.50 724
215.35
45 1143 15 380 4.7 120 28.00 711
215.41
54 1370 22 560 5.7 144 33.50 851
215.42
54 1370 22 560 5.7 144 29.75 756
215.45
60 1525 22 560 20 508 34.50 876
215.51
60 1525 22 560 20 508 30.25 768
M
ODEL WEIGHT TORSIONAL STIFFNESS‡
LB KG LBF·IN./RAD N·M/RAD
215.32
375 170
55 x 10
6
6.2 x 10
6
215.35
375 170
55 x 10
6
6.2 x 10
6
215.41
800 363
122 x 10
6
13.7 x 10
6
215.42
800 363
122 x 10
6
13.7 x 10
6
215.45
1125 510
742 x 10
6
83.8 x 10
6
215.51
1125 510
742 x 10
6
83.8 x 10
6
* Without legs.
§ Longer bases available on request.
† Maximum space between mounting surfaces of actuator output flange and torque cell (with the
MTS reaction bracket supporting the torque cell).
‡ Torsional stiffness over entire length. Stiffness increases proportionately as the actuator and
reaction bracket are moved toward each other.
Dimensions and ratings are subject to change without notice. Contact MTS for verification of
dimensions and ratings critical to your needs.