MTS Series 249 Swivels User Manual
Page 25
Mounting a Swivel
Series 249 Rod Swivel Product Manual
Installation
25
Installation
This section describes how to install the Series 249 Swivels.
Contents
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
M
OUNTING
B
OLT
S
IZE
M
OUNTING
B
OLT
T
ORQUE
B
OLT
G
RADE
SI M
ETRIC
U.S. C
USTOMARY
N·
M
LBF
·
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.