String Book - Logan Oil Tools

8
Upper Eye
Lower Eye
forgeD LinKS Wear chart
Thickness of wear point in
Lower Eye Dimension (Dim.) “A”
To determine the strength of worn links, measure the amount of eye wear with calipers as shown,
and compare the figure with the table for the new capacity. Capacity of set is that of weakest eye.
Measure the depth of the link ear at the
point of the greatest wear (Dim. A). The new
capacity of the hook and/or link ears is
shown in corresponding chart of hook size.
WEAR LIMItS: It is recommended that
any hook showing wear of 1/2" be promptly
repaired. Wear should never exceed 3/4".
When properly built up to recommended
dimensions, the wear pad will prevent further
loss in capacity until original wear point is
reached. The load capacity will always be
that of greatest wear.
Dim. A
Decrease in strength of the hook by wear
of link ears is shown for Web Wilson Hooks.
B
Thickness of wear point in
Upper Eye Dimension (Dim. B)
hyDRA-hook LInk EARS WEAR ChARt
A
upper Lower Capacity
Eye Eye (per set)
Dim. A Dim. B tons
- / in – 50 tons
3-1/2 1-3/4 150
3-3/8 1-5/8 125
3-1/4 1-9/16 110
3-1/8 1-1/2 100
- / in – 50 tons
5 2-1/4 250
4-3/4 2-1/8 210
4-5/8 2-1/2 188
4-1/2 2 175
- / in – 50 tons
5 2-3/4 350
4-3/4 2-5/8 290
4-5/8 2-1/2 262
4-1/2 2-7/16 245
- / in – 500 tons
6 3-1/2 500
5-5/8 3-1/4 440
5-1/4 3 375
5-3/16 2-7/8 345
Dim. Remaining Dim. Remaining
A Capacity A Capacity
(in) (tons) (in) (tons)
0-ton hook 50-ton hook
3-3/8 40 7-3/8 250
3-1/8 35 7-1/8 230
2-7/8 31 6-7/8 203
2-5/8 25 6-5/8 187
65-ton hook 50-ton hook
3-7/8 65 7-3/8 350
3-5/8 58 7-1/8 318
3-3/8 51 6-7/8 286
3-1/8 40 6-5/8 254
00-ton hook 500-ton hook
4-3/8 100 7-7/8 500
4-1/8 91 7-5/8 450
3-7/8 79 7-3/8 400
3-5/8 64 7-1/8 350
50-ton hook
4-7/8 150
4-5/8 138
4-3/8 123
4-1/8 112