NATIONAL CRANE
Published 11-01-2020 Control # 710-00
4-21
NBT60XL OPERATOR MANUAL
SET-UP
4
6.
Install the remainder of the rope, as applicable.
WEDGE SOCKETS
To install a wedge socket:
•
Make sure the wedge socket is the proper size for the
rope.
•
Do not mix components of different wedge socket
manufacturers.
•
The wedge socket must meet the requirements of the
wedge socket and wire rope manufacturers.
State and local laws may vary and require different
attachment methods depending upon work conditions. The
user is responsible for alternate attachment methods.
Terminator Wedge Installation
The NBT60XL is shipped with a terminator wedge socket
which is National Crane’s preferred type of socket
(Figure 4-12). Other wedge socket types are discussed
under
To attach a terminator wedge (Figure 4-12), use the following
procedure:
1.
Match the socket, wedge, and clip to wire rope size.
•
The wire rope must pass through the “go” hole in the
wedge.
•
It must not pass through the “no go” hole in the
wedge.
2.
Align the live end of rope with center line of pin.
3.
Secure dead end section of rope.
4.
Tighten nuts on clip to recommended torque
(Figure 4-12).
5.
Do not attach dead end to live end or install wedge
backwards.
6.
Use a mallet to seat Wedge and Rope as deep into
socket as possible before applying first load.
Wedge Socket Installation
1.
Inspect the wedge and socket. Remove any rough
edges and burrs.
2.
The end of the wire rope should be seized using soft, or
annealed wire or strand. If the end of the rope is welded,
the welded end should be cut off. Do not weld on size
6X37 rope. This will allow the distortion of the rope
strands, caused by the bend around the wedge, to
adjust themselves at the end of the line. Refer to
SECTION 1 - INTRODUCTION in the
Service Manual
for wire rope procedures.
3.
Make sure the live-end (Figure 4-13) of the rope is
directly in line with the lugs of the socket and the
direction of pull to which the rope will be subjected. If the
rope is loaded into the socket incorrectly, under a load
FIGURE 4-12
Torque Value Table
Cable Size (inches)
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
Torque ft/lbs
45
65
65
95
95
130
225
225
225
360
Torque values shown are based upon clean dry threads free of lubrication.
Terminator Wedge Socket
Fo
r
Reference
Only
