Owner manual

Mounting a Swivel
Series 249 Rod Swivel Product Manual Installation
25
Installation
This section describes how to install the Series 249 Swivels.
Contents Mounting a Swivel 25
Mounting for Angularly Applied Loads 26
Rigid support for
swivel mounts
The swivel base assembly is not designed to rigidly support an actuator for
vertical operation. In general, actuators that require rigid support are equipped
with a pedestal base accessory. Should it become necessary to rigidly support an
actuator with a swivel base assembly, contact MTS Systems Corporation for rigid
support recommendations.
Mounting a Swivel
All models of the Series 249 Swivels are mounted with four socket head bolts.
The mounting bolt size is determined by the model number. See the following
table for the recommended mounting bolt size, torque, and grade.
Before mounting the swivel, apply Molykote
®
G grease, or equivalent, to the
threads and under the head of each mounting bolt. Tighten each bolt until it is
firmly seated against the swivel. Then, using the pattern shown in the following
figure, tighten the bolts to one-half of the recommended torque value. Continue
using this pattern to tighten the bolts to their final torque value.
Mounting Bolt Size, Torque and Grade Requirements
M
ODEL MOUNTING BOLT SIZE MOUNTING BOLT TORQUE BOLT GRADE
SI METRIC U.S. CUSTOMARY N·MLBF·FT ISO SAE
249.12 M10 x 1.50 3/8-16 53 34 12.9 8
249.20 M16 x 2.00* 5/8-11* 230 160 12.9 8
249.23 M16 x 2.00 5/8-11 230 160 12.9 8
249.32 M24 x 3.00 1-8 780 680 12.9 8
249.41 M30 x 3.50 1 1/4-7 1600 1360 12.9 8
249.42 M30 x 3.50 1 1/4-7 1600 1360 12.9 8
249.51 M42 x 4.00 1 1/2-6 3200 2400 12.9 8
*If 1/2 in. or M12 bolts are necessary, hardened washers should be used under the heads of the bolts.