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Eastwood Technical Assistance: 800.544.5118 >> [email protected]
tubing Lay out
The following mathematical formula may be applied for specific degrees of bend:
• Beginning with the value of the Bend Radius of the Die to be used, multiply it by 6.28.
• Next, multiply the value found by the planned degree of bend.
• Lastly, divide that value by 360.
• Also, be aware that an additional 4" of straight section per bend is required as it is clamped in the U-Strap.
tHE FoLLowing arE sEVEraL EXaMpLEs
if you plan to use a die with a bend radius of 4” and make a 120° bend in it:
4" Bend Radius x 6.28 = 25.12.
25.12 x 120° = 3014.4
3014.4 / 360 = 8.38"
8.38" + 4" = 12.38"
For a die with 6” bend radius and a 30° bend
6" Bend Radius x 6.28 = 38.28
38.28 x 30° = 1184.4
1184.4/360 = 3.19”
3.19" + 4” = 7.19"
As an alternative, we have provided a chart with the most common bend angles of 90° and 180°. This chart is intended to be used as an approximate “rule-of-
thumb” when laying out your project to help determine the amount of tubing needed.
notE:
The following figures are representative of the average linear amount of tubing required for a given size and the bend radius it will yield @ 90° for 120°
Dies and @ 180° for 240° Dies. Please note the final tubing length is dependent upon the particular wall thickness, diameter and hardness of the tubing used.
These figures are for the Length of the bend portion only as measured at the centerline of the tubing. Remember to add 4” of clamping length.
tubing Layout Length Chart
die tubing size
die bend radius
90°
180°
3/4"
3"
4-3/4"
9-7/16"
1"
4"
6-5/16"
12-9/16"
1-1/2"
5"
7-7/8"
15-3/4"
1-5/8"
5"
7-7/8"
15-3/4"
1-3/4"
6"
9-7/16"
18-7/8"
2"
6"
9-7/16"
18-7/8"
