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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. This section may be cut off after the bend is
created.
The following are several examples;
For use of a 4” Bend Radius Die making a 120° bend, calculate:
- 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 use of a 6” Bend Radius Die making a 30° bend calculate:
- 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, the following chart provides 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 a 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.
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”
TUBING LAYOUT LENGTH CHART
MAINTENANCE
• Before each use, verify 10W hydraulic oil is present on the Dipstick. If needed, fill using a high quality 10W hydraulic oil until it is present on the Dipstick.
• Provide several drops of a good quality motor oil to all pivot points and rotating parts periodically to prevent binding.
• Keep all areas of the tool clean particularly those surfaces that contact metal workpieces. Dirt and metal chips can cause uneven bending and
Die damage.
• Store in a clean & dry environment when not in use. Coat all machined surfaces with a light lubricant film of oil or suitable protectant to prevent
rust formation.
