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    2. HC-878

      The HC-878's high-rigidity, bridge-type monoblock structure allows high-speed, high-precision machining, while the minimized distance between guide surface and spindle center provides greater stability. The high-rigidity bed with ideal rib distribution guarantees static positioning accuracy of ±0.000078” and ±0.000039” repeatability.

      The HC-878 is capable of a wide range (200 - 32,000 RPM) using a grease-packed spindle and a long-life AC motor. High-speed direct hard milling is possible via dry or semi-dry oil-mist systems. New HSK-E40 holder achieves six times higher clamping force than a regular BT shank while Dual Balance Cylinders reduce the load for the ball screw and servo motor.

      The HC-878 features a Fanuc 31i-A5 Super High-Speed Processor and Al Contour Control II – a “NANO CNC System” with Intelligent Velocity Control, NANO Interpolation and NANO Smoothing. 

      HC-878

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      • Specifications
      • Overview/Features
      • Floorplan / Layout
      • Request more information
      Machine Travels: X x Y x Z in (mm) 33.5 x 29.5 x 16.0 (850 x 750 x 400)
      Spindle Speed 200 ~ 32,000 RPM
      Spindle HP 8.4
      Spindle Lubrication Grease Packed
      Tool Changer Size 12 Position Standard
      Positioning Accuracy/Repeatability: in (μm) ±0.000120/±0.000040 (±3.0/±1.0)
      Table Work Area X x Y: in (mm) 37.4 x 29.5 (950 x 750)
      Table to Spindle Nose Distance: in (mm) 8.8 ~ 24.6 (225 ~ 625)
      Max. Workpiece Weight: lb (kg) 440 (200)
      Coolant Tank Capacity: gal (L) None
      Table Height from Floor: in (mm) 31.5 (800)
      Actual Measured Circularity (2.0" dia. @8 IPM): in (μm) 0.000098 (2.5)
      Spindle Taper HSK-E40
      Spindle Air Purge Standard
      Air Blast through Spindle Standard
      Oil Mist with Collector Optional
      Linear Scales X, Y, Z - axes Heidenhain 0.00001mm Standard
      Rapid Traverse Speed: in/min. (m/min.) 787 (20)
      Cutting Speed (Normal Mode): in/min. (mm/min.) 0.01 - 315 (0.25 ~ 8000)
      Cutting Speed (GR Super PC Mode): in/min. (m/min.) 394 (10)
      Dust Collection System Amano PiE-30 Standard
      Machine Weight: lb (kg) 15,500 (7030)
      Machine Height: in (mm) 115.5 (2935)
      Required Floor Space [Machine Unit]: in (mm) 134 x 134 (3400 x 3400)
      Control Unit Fanuc 31i-A5 with RISC Processor
      Power Requirements KVA 200 ~ 220V 22KVA
      Air Supply 26.5 cu.ft./min @ 72 psi

      Overview

      • High-rigidity structure for high-speed, high-precision hard or graphite milling
      • Greater stability for positioning accuracy and repeatability
      • High-speed direct hard milling is possible via dry or semi-dry oil-mist systems

       

      Features

      • Super Hybrid Concept - Hard Milling or Graphite
      • Highly Rigid Structure
      • Extended Speed Range - 200 through 32,000 RPM
      • High Rigidity Tool Holders
      • Z-axis Balance Cylinder
      • Fanuc 31i-A5 64 bit RISC Controller with HPCC (High Precision Contour Control)
      HC-878 - Floorplan / Layout


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      Graphite and Hard MillingMold and Die
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