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Johnford X: 4100 - Y: 2800 - Z: 800 mm CNC 5 axes

ENGLISH TRANSLATION:

Type: DMC-4100LH
2800 mm between columns!!
MA-25 2-axis universal milling head – 20 kW – 6000 rpm
C-axis range: 0–360°
A-axis range: +/- 110°
Coolant through spindle 40 bar
Total power: 67 kW
No foundation required!

The Johnford DMC series double column bridge milling machine with moving table is constructed from a one-piece Meehanite cast iron bridge/column structure, reportedly occupying 30 percent less floor space than comparable C-frame vertical machining centers. The bridge mill is available in both moving table and sliding column (fixed table) configurations, ranging from 91 x 91 x 76 cm up to 18 x 6 meters. The bridge milling machines feature a long base with full support of the table over the entire 130 cm Y-axis travel, enabling machining of heavy workpieces.

On the Y and Z axes, a constant weight is supported at all times, while only the X-axis carries dynamic loads. This results in precise machining with tight tolerances during high-speed operations. As there is no table overhang, the inclination and yaw angle of the X-axis are eliminated. The distance between the spindle center line and the column is minimized, providing extra rigidity. The machine’s heavily ribbed cast iron construction ensures longevity and optimum surface finish. The combination of dual chip augers and a conveyor belt ensures complete chip removal with minimal manual cleaning. Moreover, finite element analysis (FEA) is used in the design of each bridge mill, simulating the effects of realistic conditions such as vibration, heat, fluid flow, and other physical influences.

Longitudinal travel X-axis: 4100 mm
Transversal travel Y-axis: 2800 mm
Vertical travel Z-axis: 800 mm
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Table clamping dimensions: 4200 x 2400 mm
Spindle power: 30 kW
Spindle taper: BT 50
Maximum speed: 6000 rpm

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