WEDGE SOCKET WARNING

WARNINGS AND APPLICATION • Loads may slip or fall if the Wedge Socket is not
INSTRUCTIONS properly installed.
• Load misapplied in direct contact with the wedge
can dislodge the wedge & cause loss of load.
• A falling load can seriously injure or kill.
• Read and understand these instructions before
installing the Wedge Socket.
• Do not side load the Wedge Socket.
• Do not interchange Crosby wedge socket, wedge or
pin with non Crosby Wedge socket, wedge or pin.
• Apply first load to fully seat the Wedge and Wire
Rope in the socket. This load should be of equal or
S-421 / US-422 greater weight than loads expected in use.
• Do not interchange wedge between S-421 and
US-422 or between sizes.
Important Safety Information -
Read and Follow Figure. 1
Inspection/Maintenance Safety
• Always inspect socket, wedge and pin before using.
• Do not use part showing cracks.
• Do not use modified or substitute parts.
• Repair minor nicks or gouges to socket or pin by lightly Tail
grinding until surface are smooth. Do not Length*
reduce original dimension more than 10%. Do not repair by
welding.
• Inspect permanent assemblies annually, or more often in
severe operating conditions.
• Do not mix and match wedges or pins between models or
sizes.
RIGHT WRONG WRONG
• Always select the wedge and socket for the wire
*Tail Length
rope size. Standard 6 to 8 strand wire rope
A minimum of 6 rope diameters, but not less than 6”.
Assembly Safety (i.e. - For 1” rope: Tail Length = 1” x 6 = 6”
• Use only with standard 6 to 8 strand wire rope of
Rotation Resistant Wire Rope
designated size. For intermediate size rope, use next larger A minimum of 20 rope diameters, but not less than 6”)
size socket. For example: When using 9/16” diameter wire (i.e. - For 1” rope: Tail Length = 1” x 20 = 20”)
rope use a 5/8” size Wedge Socket Assembly. Welding of
the tail on standard wire rope is not recommended. Seizing
of the tail is preferred following the recommended practices
of the wire rope manufacture. The tail length of the dead Operating Safety
end should be a minimum of 6 rope diameters but not less • Apply first load to fully seat the Wedge and Wire Rope
than 6”. in the socket. This load should be of equal or greater
• Align live end of rope, with center line of pin. (See Figure 1) weight than loads expected in use.
• Secure dead end section of rope. (See Figure 1) • Efficiency rating of the Wedge Socket termination is
• DO NOT ATTACH DEAD END TO LIVE END. (See Figure 1) based upon the catalog breaking strength of Wire
Rope. The efficiency of properly assembled Wedge
• Use a hammer to seat Wedge and Rope as deep into
Socket is 80%.
socket as possible before applying first load.
• During use, do not strike the dead end section with
• To use with Rotation Resistant wire rope (special wire rope
any other elements of the rigging (Called
constructions with 8 or more outer strands) ensure that the
two-blocking).
dead end is welded, brazed or seized before inserting the
wire rope into wedge socket to prevent core slippage or • Do not allow a direct load to contact the wedge.
loss of rope lay. The tail length of the dead end should be a
minimum of 20 rope diameters but not less than 6”. (Figure 1)

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