Manitowoc National Crane NBT40-1 Series User Manual

National Crane 3-29-2018 Control # 610-00 6-7
NBT40-1 SERIES OPERATOR MANUAL SET-UP
6
WEDGE SOCKETS
To install a wedge socket:
• Make sure the wedge socket is the proper size for
1
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
Terminator wedge socket is the preferred type of socket
(Figure 6-4). Other wedge socket types are shown on
page 6-7.
To attach a terminator wedge, use the following procedure:
1. Match the socket, wedge, and clip to the wire rope and
size the rope with the go and no go hole in the socket.
• The wire rope must pass through the “go” hole and
not pass through the “no go” hole.
• If the wire rope passes through the “no go” hole, the
wedge is the wrong size.
• If the wire rope does not pass through the “go” hole,
the wedge is the wrong size.
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.
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 6-5) of the rope is directly
in line with the ears 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 the rope will
bend as it leaves the socket, and the edge of the socket
1.
FIGURE 6-4
Torque Value Table
Rope 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

Manitowoc National Crane NBT40-1 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40-1 Series
Category	Construction Equipment
Language	English