WARNINGS
AND APPLICATION
INSTRUCTIONS |
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| G-429 |
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3.
When three or more clips are required, space additional clips equally
between first two - take up rope slack - tighten nuts on each clip evenly,
alternating from one nut to the other until reaching recommended torque.
4. If a pulley (sheave) is used in place
of a thimble add one additional Fist Grip. Fist Grip spacing should be
as shown.
5. WIRE ROPE SPLICING PROCEDURES:
The preferred method of splicing two wire ropes together is to use inter-locking
turnback eyes with thimbles, using the recommended number of clips on
each eye (See Figure 5).
An alternate method is to use twice the number of clips
as used for a turnback termination. The rope ends are placed parallel
to each other, overlapping by twice the turnback amount shown in the application
instructions. The minimum number of clips should be installed on
each dead end (See Figure 6). Spacing, installation torque, and
other instructions still apply.
6. IMPORTANT
Apply first load to test the assembly. This load should be of equal
or greater weight than loads expected in use. Next, check and retighten
nuts to recommended torque.
In accordance with good rigging and maintenance practices, the
wire rope end termination should be inspected periodically for wear, abuse,
and general adequacy.
| Table
1 |
Clip
Size
(Inches) |
Rope
Size
(Inches) |
Minimum
No. of
Clips |
Amount
of Rope to Turn Back in
Inches |
*Torque
in
Ft. Lbs. |
| 3/16 |
3/16 |
2 |
4 |
30 |
| 1/4 |
1/4 |
2 |
4 |
30 |
| 5/16 |
5/16 |
2 |
5 |
30 |
| 3/8 |
3/8 |
2 |
5-1/4 |
45 |
| 7/16 |
7/16 |
2 |
6-1/2 |
65 |
| 1/2 |
1/2 |
3 |
11 |
65 |
| 9/16 |
9/16 |
3 |
12-3/4 |
130 |
| 5/8 |
5/8 |
3 |
13-1/2 |
130 |
| 3/4 |
3/4 |
3 |
16 |
225 |
| 7/8 |
7/8 |
4 |
26 |
225 |
| 1 |
1 |
5 |
37 |
225 |
| 1-1/8 |
1-1/8 |
5 |
41 |
360 |
| 1-1/4 |
1-1/4 |
6 |
55 |
360 |
| 1-3/8 |
1-3/8 |
6 |
62 |
500 |
| 1-1/2 |
1-1/2 |
7 |
78 |
500 |
| If
a pulley (sheave) is used for turning back the wire rope, add one
additional clip. See Figure 4. |
| If
a greater number of clips are used than show in the table, the amount
of turnback should be increased proportionately. |
| *
The tightening torque values shown are based upon the threads being
clean, dry, and free of lubrication. |
|
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Efficiency ratings for wire rope end terminations
are based upon the catalog breaking strength of wire rope. The efficiency
rating of a properly prepared loop or thimble-eye termination for clip
sizes 1/8" through 7/8" is 80%, and for sizes 1" through
3- 1/2" is 90%.
The number of clips shown (see Table 1) is based upon using RRL or RLL
wire rope, 6 x 19 or 6 x 37 Class, FC or IWRC; IPS or XIP, XXIP.
If Seale construction or similar large outer wire type construction in
the 6 x 19 Class is to be used for sizes 1 inch and larger, add one additional
clip. If a pulley (sheave) is used for turning back the wire rope, add
one additional clip.
The number of clips shown also applies to rotation - resistant RRL wire
rope, 8 x 19 Class, IPS, XIP, XXIP, sizes 1-1/2 inch and smaller; and
to rotation-resistant RRL wire rope, 19 x 7 Class, IPS, XIP, XXIP, sizes
1-1/2 inch and smaller.
For other classes of wire rope not mentioned above, we recommend contacting
Crosby Engineering at the address or telephone number on the back cover
to ensure the desired efficiency rating.
The style of wire rope termination used for any application is the obligation
of the user.
For OSHA (Construction) applications, see OSHA 1926.251
1.
Refer to Table 1 in following these instructions. Turn back specified
amount of rope from thimble or loop. Apply first clip one base width from
dead end of rope. Tighten nuts evenly, alternating from one nut to the
other until reaching the recommended torque.
2.
When two clips are required, apply the second clip as near the loop or
thimble as possible. Tighten nuts evenly, alternating until
reaching the recommended torque. When more than two clips
are required, apply the second clip as near the loop or thimble as possible,
turn nuts on second clip firmly, but do not tighten. Proceed
to Step 3.
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