Universal Grinding Machine

UB 63, 85, 90 CNC

Distance between centers2 000, 3 000, 4 000, 5 000mm
Max. swing diameter630, 850, 900mm
Minimum X axis increment0.001mm
Minimum Z axis increment0.005 (0.001)mm
Grinding wheel peripheral velocity25 - 45m/s
Max. weight between centers2,500kg
Max. workpiece weight incl. fixture - overhanging250kg
Grinding wheel diameter750mm
Spindle power22kW
CNC control systemSiemens Sinumerik 840D sL or Kavalír K 51-2


Universal cylindrical grinding machines UB 63, 85, and 90 CNC are based on the basis of time-tested design, complemented by modern features. These grinding machine are used for grinding of workpieces max. Diameter of 630, 850 and 900 mm and a max. Length of 6000 mm, clampend between centers or overhung in a chuck with the possibility to use of internal grinding device *. During grinding, the machines can be controlled manually or work in fully automatic grinding cycle (grinding multiple diameters (multicycle), plunge grinding or lengthwise grinding, grinding of convex or concave diameters with automatic grinding wheel dressing). Workpieces are clamped between centers, overhung in chuck or on a magnetic permanent plate. The machines are intended for precise and high-performance grinding of individual pieces but also for large series of workpieces.

  • Flexible grinding of medium-heavy to heavy cylinders and shafts
  • Heavy machine design with variable grinding wheel location.
  • Design with one or two grinding headstocks.
  • Control system CNC – Siemens 840 Sinumerik D sL or Kavalír K51-2
  • Grinding spindles with hydro-dynamic suspension or on roller bearings.
  • Partial or full cover of machine with grinding mist exhaustion
  • SBS Dynamic balancing system of grinding wheel
  • Measuring, cooling and electric systems by world leading manufacturers.

Photo gallery

UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC
UB 63, 85 and 90 CNC

Standard accessories

  • Coolant splash guards – partially covering with a manual-controlled door
  • Tailstock mounted wheel dresser (without diamond)
  • Fixed tips (2 pc):
  • - sedimentation cooling system
  • - electric foot pedal for pneumatic tailstock control
  • Puller of grinding wheel flange
  • Suspension of grinding wheel flange
  • Set of pads for bed leveling
  • Balancing arbor with a nut
  • Tools for operating of machine
  • Machine LED spot light IP 65
  • Technical documentation

Special accessories

  • Size gauge for longitudinal workpiece positioning
  • In-process measurement of workpiece diameter
  • SBS Automatic electro-dynamic balance system of the grinding wheel
  • Extra grinding wheel flange
  • Internal grinding att. complete incl. spindle and motor-drive
  • Closed steady rest actuated by hand
  • Tilting wheel dresser table mounted w/o diamond actuated by hand
  • Three jaw-chuck, incl. adapter plate
  • Permanent magnetic plate incl. adapter plate
  • Auxiliary rests with different diameter range
  • Side and angular dresser table mounted w/o diamond actuated by hand
  • Radius dresser table mounted w/o diamond actuated by hand
  • Att. for fine table swiveling with dial indicator
  • Water tank fitted with a magnetic or belt filter or a combination thereof
  • Wheel balancing stand
  • Set of chemical dowel screws for bed leveling