|
|
-
The
chart shows a suggested loop length ("L"
) for various stock thickness and amount of slack material ("S")
for various feed line heights ("H").
-
“R”
is normally considered to be about 360 x strip material thickness for mild
steel to avoid distortion of material in free loop..
-
In
the example shown, there are four radii therefore: "L"=
4 x 360 x material thickness.
-
Increasing
the "L" dimension
to more than required for your material thickness is undesirable because
it decreases available slack and increases the load on the feeder.
-
If
the loop control is an “off-on” type slack material should be about
two feed lengths.
-
If
the loop control provides variable speed depending on loop depth, slack
can be less, but will depend on factors such as strokes per minute, feed
length, etc..
|
|
Stock
Thickness
(Mild Steel) |
Loop
Length
"L" |
Stock
Line Height (Depth of Slack Loop) "H" |
| 40" |
42" |
44" |
46" |
48" |
50" |
52" |
54" |
58" |
62" |
66" |
72" |
| GA. |
Decimal |
Maximum
Material Available in Slack Loop |
| 18 |
.047" |
6
ft. |
36" |
39" |
42" |
45" |
48" |
51" |
54" |
58" |
64" |
71" |
75" |
81" |
| 16 |
.059" |
8
ft. |
29" |
32" |
34" |
37" |
40" |
42" |
45" |
48" |
54" |
61" |
67" |
75" |
| 14 |
.074" |
10
ft. |
24" |
26" |
28" |
31" |
34" |
36" |
38" |
41" |
47" |
52" |
59" |
67" |
| 12 |
.104" |
12
ft. |
20" |
22" |
25" |
27" |
29" |
31" |
34" |
36" |
41" |
46" |
51" |
60" |
| 11 |
.119" |
14
ft. |
18" |
20" |
22" |
23" |
25" |
27" |
29" |
32" |
36" |
41" |
46" |
53" |
| 10 |
.134" |
16
ft. |
16" |
17" |
19" |
21" |
23" |
24" |
26" |
29" |
32" |
36" |
41" |
48" |
| 9 |
.149" |
18
ft. |
14" |
16" |
17" |
19" |
21" |
22" |
24" |
26" |
29" |
33" |
37" |
44" |
| 8 |
.164" |
20
ft. |
13" |
14" |
16" |
17" |
19" |
20" |
22" |
23" |
26" |
30" |
34" |
40" |
| 5 |
.209" |
24 ft. |
11" |
12" |
13" |
14" |
16" |
17" |
18" |
19" |
22" |
25" |
29" |
34" |
| 3 |
.239" |
30 ft. |
8" |
9" |
10" |
11" |
12" |
13" |
14" |
15" |
18" |
19" |
24" |
27" |
|
|
|
|
|
|
