Table of Contents
Advertisement
b) Avoid using vibration-proof rubber and resin
• Do not insert an elastic body, such as vibration-proof rubber or resin,
between the mount base and the antenna chassis' legs. If rubber or resin
is inserted, the amplitude of vibration increases, resulting in the possibility
of damage to the antenna. Furthermore, if installation bolts become loose
due to deterioration of rubber or resin, the antenna may be damaged or fall
from its mount.
3) Installation and clamping method
a) Installation direction
• Installation should be done so that the cable gland side is oriented
accessibility by maintenance staffs.
b) Bolts, nuts and tightening torque to be used
• Use stainless steel bolts for the antenna and uniformly tighten all of the
bolts using double nuts for each bolt so that the antenna will not
become loose (Table 2-1).
• Although the length of the bolt will differ according to the thickness of
the mount base, use a bolt long enough so that more than 4 millimeters
of thread protrudes beyond the double nuts after the double nuts have
been tightened.
Table 2-1 Length of antenna mounting bolts and tightening torque
Antenna
Unit
c) Use of washer and corrosion-resistant measures
• At the location where a bolt's head or nut comes in contact with the
antenna chassis' legs and the mount base, insert a plain washer which
fits the bolt; and, at the location where the nut comes in contact with the
plain washer, insert a spring washer, and then securely tighten the nuts
(Fig.2-3).
• To prevent corrosion due to the contacts between different metals, such
as the antenna chassis' legs, installation surface, bolts, nuts, etc., cover
the bolt's head and nuts with sealant (Fig.2-3).
Thickness of
Mount Base
(mm)
12
M10×55(mm) SUS304
8
7ZPRR0001
Bolt
Torque (N-m)
40
Advertisement
Table of Contents
