Specifications

EM-506 (N-07/03) 4-5
OFF-CENTER LOAD CAPACITY
(LEFT-TO-RIGHT)
Most forming and punching jobs are located on the
centerline of the machine where full rated machine
capacity is available. When the load is not located at the
center of the machine, only a portion of the total capacity
is available as shown in Figure 4-7.
For example, a 135 PROFORM Hydraulic Press Brake
has 100% - 135 tons (1201 kN) of its rating available for
bending at the centerline of the machine. At either
housing, regardless of length, only 50% of the tonnage –
67.5 tons (600.5 kN) is available.
To determine the available tonnage at a point between
the centerline and either housing, the ratios shown in
Figure 4-7 can be used. For example, a 135 PROFORM
x 10’ Press Brake is approximately 128” (3251 mm)
from housing to housing (L). A point at .3 of this length
is 38.4” (975 mm) (.3 x 128”/3251 mm). Then at 38.4”
(975 mm) from the centerline of the machine 62% (83.7
tons/745 kN) of the tonnage is available.
FIGURE 4-7 Off-center load capacity