-24-
05/2021HB60
4.8. Adjustment of the bending angle
1. Place the pipe in position between the center former bending die and counterbending die, apply
spray lubricant supplied to groove of counterbending die.
2. Position counterbending die using the adjustment hand wheel. with pipe between bending die
and counterbending die with very light pressure (see Figure 14).
3. Start bending the pipe at slow speed until tube begins to flex and stop. This phenomenon is
observed after only a few degrees of bending. The value depends on type of material, cross-
section and quality of supplier.
4. Unscrew the M8x150 hex head screw connecting the bending shaft and the degree wheel.
Access screw from hole present through center of bending shaft (see Figure 15).
5. Adjust degree wheel by rotating it until to desired bending angle value.
6. Tighten the screw in point 4.
7. Complete the bending.
8. Once bending is complete, return bending die to the zero position, swing the counterbending die
away to a clearance position and remove pipe.
9. Regularly lubricate counterbending die groove to improve bend quality and reduce tooling wear.
Figure 14 - Pipe in position, counterbending die moved forward
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