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8K Series

mammut eccentric presses

C-frame presses derive their name from the C-shaped throat opening. In addition to the familiar open back design, this style of machine has a long history of use for portable hole punching. The press-brake is also a type of gap-frame press.

Presses with force capacities up to 250 tons and larger, gap frame presses are less costly than a straightside press having the same force capacity. In the 35 to 60-ton force range, they cost approximately half that of straightside presses.

The chief limiting factor of this type of machine is that it has more deflection than a straight-side press for a given load. The deflection has both a vertical and angular component.

mammut eccentric presses
mammut eccentric presses
mammut eccentric presses

Gap or C-frame presses have many useful features. These include excellent accessibility from the front and sides for die setting and operation. The machines also cost substantially less than straight-side presses. The open back is available for feeding stock as well as ejection of parts and scrap.
A further advantage of a gap frame press is that the machine is easier to set-up than a straightside press. The diesetter has much greater freedom of access to locate and bolt the die in place. The open back is also accessible for discharging finished parts and scrap as well as feeding stock. Gap-frame presses generally have less height than a straightside press of comparable tonnage. This is a valuable consideration when overhead clearance is limited.


• Full automatic stroke adjustment
• Stress relieving Treatment
• Slide with eight guides
• Motor forward/Back control system
• Centralized lubrication
• Photocell guard fence
• Pneumatic equilibrating cylinders
• Motorised carriage adjustment system
• Hydraulic overload protection system
• Pneumatic clutch/Brake combination
• Double selenoid
• Press safety valve
• Gear groups in oil bath
• CE certificate


• Quick die change system
• Pneumatic cushion
• 2nd table

MODEL Normal Pressure Stroke Per Minute Motor Power Stroke Adjustment Slide Adjustment C Frame Depth Distance Between Columns Daylight Main Table Dimensions Main Table Thickness Hole of the Main Table Carriage Table Dimensions Hole of the Carriage Table Weight
kN rpm kW mm mm mm mm mm mm mm mm mm mm kg
8K/63 630 60 5.5 10-110 0-90 305 480 300 900×600 70 200 600×500 50 7.000
8K/100 1000 60 11 20-160 0-100 390 580 360 1100×660 90 220 900×500 50 15.000
8K/160 1600 60 15 20-160 0-100 525 620 610 1400×1000 90 250 1100×700 50 20.000
8K/200 2000 45 15 20-180 0-110 425 600 650 1300×800 100 290 1100×700 50 26.500
8K/250 2500 40 30 20-250 0-130 520 690 530 1500×1000 100 290 1300×900 50 28.000
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