The Johnford DMC-2100H is the heaviest double column machining center in its class. With standard accessories, this heavy duty 35 HP fixed double column vertical machining center, weighs in at 52,000 lbs. of Meehanite cast iron. The machine design features a moving table and fixed column for maximum rigidity. A rugged 90 degree bridge with offset Y axis ways and a massive 40” wide saddle keeps the spindle center line extremely close to the bridge for rigidity. This design also allow for more distance across the Y axis ways for best support of the massive headstock. The bridge and columns are a one piece casting for best rigidity.
The massive Z axis head and Y axis saddle features square box ways coated with Turcite and have been designed with diagonally arranged ribs that will help reduce the amount of distortion that is caused by years of continued service. The X axis table traverse is accomplished via heavy duty Schneeberger roller linear ways for accurate positioning of heavy work pieces. Accurate positioning is carried out by large diameter, pre-tensioned ballscrews and powerful servo motors.
The 90mm spindle is driven by a 35HP, 2 speed geared spindle drive that delivers outstanding cutting performance at any RPM. The spindle is oil cooled for minimal thermal growth. A 6000 RPM spindle driven by a 2 speed gear box and producing 488 ft./lbs. of torque is standard. For high speed machining, both a 35HP 10,000 RPM direct drive spindle or a Weiss integral spindle is available as an option. The 110mm Weiss spindle produces 15,000 RPM and 56HP with excellent low end torque and utilizes HSK-100A tooling for best rigidity and tool life.
An impressive list of standard features includes a heavy duty 40 tool arm type ATC that is mounted to the machine column for easy maintenance, a chip removal system consisting of 2 screw type conveyors on each side of table that discharge into a caterpillar type conveyor at the end of the machine, a high volume coolant system, and a full machine enclosure (including the top) to contain chips and coolant. Your choice of Fanuc controls provides the ideal combination for all types of applications. The Fanuc OiM-F Plus is standard for most job shop and light mold applications. The Fanuc 31iMB is available for high speed, high accuracy mold and die machining. Both controls feature the new Alpha I servo system with 1,000,000 pulse encoders.
Travels
Longitudinal Travel (X) Axis 80.7"
Cross Travel (Y) Axis 51”
Vertical Travel (Z) Axis 31.5"
Table to Spindle 5.9" min/37.4" max
Distance Between Columns 51.2"
Table
Table Working Surface 86.6" x 43.3"
Maximum Workload on Table 13,200 LBS.
Table Surface Ground / T-slotted
No. of T-slots x Width 7 x 22mm
Spindle
Spindle Motor 35 HP
Spindle Torque 488 ft/lbs at only 375 RPM
Spindle Taper ISO-50
Spindle Drive System 2 speed gear box
Spindle Speed 0-6000
Spindle (Optional Inline Direct Drive)
Spindle Motor 35 HP Fanuc (40HP opt.)
Spindle Torque 122 ft/lbs at 1500 RPM
(258 ft/lbs at 500 RPM optional)
Spindle Taper ISO-50
Spindle Drive System Direct Drive
Spindle Speed 0-10000
Spindle (Optional Weiss Integral Motor Spindle)
Spindle Motor 56 HP high torque
Spindle Torque 300 ft/lbs @ 1000 RPM
Spindle Taper HSK-100A
Spindle Drive System Integral Motor
Spindle Speed 0-15000 RPM
Automatic Tool Changer (arm type)
Number of Tools 40 tools (60, 80, 120 opt.)
Tool Selection Bi-directional-random
Tool Change Time 12 sec tool to tool
Maximum Tool Diameter 5.3" with adjacent tools, 7.8” without
Maximum Tool Weight 33 LBS
Tool Type CAT-50 (BT-50 opt)
Maximum Tool Length 13.7"
Ballscrews and Axis Motors
X-Y-Z Ballscrew Diameter2.5” X, 2.5” Y, 1.97”Z x 10 pitch
Ballscrew TypeClass 3 double nut pre-loaded
Ballscrew Mounting TypePre-tensioned
X-Y-Z Servo Motor HP9.0 - 9.0 - 5.2HP
Servo Motor MountingDirect coupled XY, 3:5 Z
Feeds
Rapid Traverse Rate X,Y,Z 590, 590, 472 IPM
Cutting Feed Rate 0.01 - 394 IPM
Positioning Accuracy +/- .0003" full stroke
Repeatability +/- .0002"
General
Coolant Tank Capacity 120 gallons
Machine Weight (base machine only) 52,000 LBS
Floor Space 236" X 130" x 150"
Machine Power Source 208/220 Volts, 3 Phase 150 Amps**
Air Source 90 PSI
Automatic Pallet Changer (option)
Table Working Surface 86.6" x 43.3"
Maximum Workload on Pallet 7,500 LBS.
Pallet surface Milled / T-slotted
No. of T-slots x Width 7 x 22mm
Pallet change time 45 seconds
Standard Machine Accessories
Flood Coolant System with programmable air blast
Air blast for spindle
Auto Lubrication with Alarm
Automated chip removal system with chip conveyors
Halogen work lamp
2 speed geared head with spindle / headstock cooler
Remote Handwheel
Heat exchangers for control cabinets
Hydraulic counterbalance for headstock
Rigid Tapping
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