TABLE
5
TERMINAL
EFFICIENCIES
(APPROXIMATE)
Efficiencies are applicable to the rope's minimum breaking force
Efficiency
Type
of
Terrrrination Rope with IWRC* Rope with FC**
Wire Rope Socket (Spelter or Resin)
Swaged Socket (Regular Lay Ropes
Only)
Mechanical Spliced Sleeve (Flemish Eye)
1"
dia. and smaller
Greater than
1"
dia. through
2"
Greater than
2"
dia. through 3-1/2"
100%
100%
95%
92-112%
90%
Loop or Thimble Splice-Hand Spliced (Tucked)
(Carbon Steel Rope)
114"
90%
5/16"
89%
3/8" 88%
7/16"
87%
112"
86%
5/8"
84%
3/4" 82%
7/8" thru 2-1/2"
80%
Loop or Thimble Splice-Hand Spliced (Tucked)
(Stainless Steel Rope)
114"
80%
5/16"
79%
3/8"
78%
7/16"
77%
112"
76%
5/8"
74%
3/4"
72%
7/8"
70%
Wedge Sockets***
(Depending on Design)
75% to
80%
Clips***
(Number
of
clips varies with size
of
rope)
80%
*IWRC::::lndependent Wire Rope Core
**FC::::Fiber
Core
100%
(Not Recommended)
92-112%
90%
(Not established)
90%
89%
88%
87%
86%
84%
82%
80%
75% to 80%
80%
***
Typical values
when
terminations
are
cOITectly
designed, applied and maintained. Refer
to
fittings
manufacturers for exact values and method.
Wire Rope Technical Board - Wire Rope Users Manual, Fourth
Edition·
35
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