MTS Series 201 Actuators - Manual (Page 30)

Series 201 Actuator Product Information 30
Spiral Washers
Mounting bolt
specifications
A Series 201 Actuator equipped with a swivel base typically has the base bolted
to a reaction mass. The following table lists information for the mounting bolt
specifications.
Spiral Washers
The optional MTS Model 601 Spiral Washers are typically used to provide
fatigue-rated connections between elements of the force train and to minimize the
effects of backlash. If the operating procedure requires changing of preloaded
force train elements such as the load cell or swivel, the spiral washers must be
readjusted.
The spiral washers are placed over the connector studs at each connection, and
adjusted to place a constant preload on the stud.
M ODEL R ECOMMENDED
M OUNTING B OLT S IZE*
* Sizes listed are for standard Series 201-style swivels. Series 249 Swivels might use different sizes.
R ECOMMENDED
M OUNTING B OLT T ORQUE
R ECOMMENDED
M OUNTING B OLT G RADE
SI U.S. S TD . N M ( FOR SI) LBF FT ( FOR U.S.) ISO SAE
201.17 M12 x 1.75 1/2-13 93 84 12.9 8
201.20 M16 x 2.00 5/8-11 230 160 12.9 8
201.25 M16 x 2.00 5/8-11 230 160 12.9 8
201.30 M16 x 2.00 5/8-11 230 160 12.9 8
201.35 M24 x 3.00 1-8 780 680 12.9 8
201.40 M24 x 3.00 1-8 780 680 12.9 8
201.45 M30 x 3.50 1 1/4-7 1600 1360 12.9 8
201.60 M42 x 4.00 1 1/2-6 3200 2400 12.9 8
201.70 M42 x 4.00 1 1/2-6 3200 2400 12.9 8
201.80 M48 x 5.00 1 3/4-5 6500 3700 12.9 8
201.90 M56 x 5.50 2-4 1/2 10,000 5600 12.9 8