The ZEUS-86's high-rigidity, bridge-type monoblock structure allows high-speed, high-precision machining while the minimized distance between the Z-axis guideways and spindle center provides greater stability. The high-rigidity bed with ideal rib distribution guarantees static positioning accuracy of ±0.000080" and ±0.000030" repeatability.

The ZEUS-86 is capable of a wide spindle speed range (200 - 25,000 RPM) using an oil-mist lubricated spindle and a 20-HP AC spindle motor. High-speed direct hard milling is possible via dry or semi-dry oil-mist systems. New HSK-E50 holder achieves six times higher clamping force than a regular BT shank while Dual Balance Cylinders reduce the load for the Z-axis ball screw and servo motor.

The ZEUS-86 is a unique member of the Roku machine family as it uses a Twin Drive System for the Y-axis.  This is a twin direct drive motor/ball screw system that is designed to move the large table and workpiece weight and still maintain its high degree of accuracy.

The ZEUS-86 features a Fanuc 31i-B5 Super High-Speed Processor and Al Contour Control II – A "NANO CNC System" with Intelligent Velocity Control, NANO Interpolation, and NANO Smoothing.


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  • Specifications
  • Overview/Features
  • Floorplan / Layout
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Machine Travels: X x Y x Z in (mm) 31.5 x 23.6 x 15.7 (800x 600 x 400)
Spindle Speed 200 ~ 25,000 RPM
Spindle HP (kW) 20 (15)
Spindle Lubrication Oil Mist
Tool Changer Size 30 Position Standard(60 Tools Optional)
Positioning Accuracy/Repeatability: in (μm) ±0.000080/±0.000030(±2.0/±0.8)
Table Work Area X x Y: in (mm) 37.4 x 23.6 (950 x 600)
Table to Spindle Nose Distance: in (mm) 7.8 ~ 23.6 (200 ~600)
Max. Workpiece Weight: lb (kg) 1,763 (800)
Coolant Tank Capacity: gal (L) 62.5 (237)
Table Height from Floor: in (mm) 37.4 (950)
Actual Measured Circularity (2.0" dia.@8 IPM): in (μm) 0.000078 (2.0)
Spindle Taper HSK-E50
Spindle Air Purge Standard
Air Blast through Spindle Standard
Oil Mist with Collector Optional
Linear Scales X, Y, Z - axes Heidenhain 0.00001mmStandard
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.) 590 (15)
Dust Collection System NA
Machine Weight: lb (kg) 17,640 (8000)
Machine Height: in (mm) 129 (3276)
Required Floor Space [Machine Unit]: in (mm) 110.2 x 153.5 (2800 x3900) includes rear clearance
Control Unit Fanuc 31i-B5 Super High-SpeedProcessor and Al Contour Control II
Power Requirements KVA 200 ~ 220V 32.5KVA
Air Supply 17.5 cu.ft./min @ 72psi


The ZEUS-86 is a special member of the Roku family due to its size and the 1,763 lb. workpiece load it can handle.  To achieve the High Precision High Speed macro fine machining technology the ZEUS-86 has been designed using a high rigidity base casting, a column and cross rail forming a single mono-block structure with a special rib structure to suppress thermal deformation, a Twin Drive Y-axis ball screw system moving the table and workpiece weight, and a dual Z-axis balance cylinder that holds the weight of the spindle thus providing smooth, precise and stable movement.  The entire machine is designed using HIS (Heat Isolation System) that combines heat discharge fans on all axes and dual chiller systems to cool the spindle and machining coolant.  Thermal Growth Control is held to ±0.1°C using this combined system.



  • High-rigidity structure for greater stability and accuracy in flood machining and hard milling
  • High horsepower machining using an oil-mist lubricated spindle and a 20-HP AC spindle motor
  • Super Hybrid Concept - High-Speed, High Precision, Milling, Drilling and Tapping
  • Extended Speed Range - 200 through 25,000 RPM
  • High Rigidity HSK-E50 Tool Holders
  • Twin Drive ball screw Y-axis
  • Dual Z-axis Balance Cylinder
  • Z and Y-axis thermal compensation
  • Blum laser tool measure system standard
  • Fanuc 31i-B5 Super High-Speed Processor with AI Contour Control II and NANO Interpolation
ZEUS-86 - Floorplan / Layout

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Flood Machining / Hard MillingMold and Die