GU-3250, 3275, 32100

Paragon USA | Universal Cylindrical Grinding Machines, NC/S/P
  • GU-3250P-Universal
  • Universal-Wheel-Head
  • Work-Head
  • UNIV-Internal-Grind
  • UNIV-Plunge-Grind
  • UNIV-Sholder-Grind
  • UNIV-Taper-Grind
  • UNIV-Traverce-Grind
Every Paragon cylindrical grinder is designed and manufactured based on the following management concepts: Application of the newest technologies and innovation, endless improvement and progress and customer satisfaction. Assembly is carried out in strict compliance with ISO 9001 directives. All machine bases are manufactured from high quality Meehanite cast iron with a low center of gravity.

Universal wheel-head: Rigid and precise with a powerful 5-hp motor achieving peripheral speed 45m/s. Equipped with class C1 ballscrew (40mm dia.) and Heidenhain sub-μm linear scale with full close loop feedback.

Overall, the machine achieves +/- 0.5 μm repeatability accuracy

Grinding Spindle: Made of high quality alloy steel (SNCM-439).

Hydrostatic Bearings: No metal to metal friction, no overheat and no deformation and no oil leakage. The hydraulic and lubrication system has independent temperature control, providing minimum thermal displacement.

Hydrostatic Guideways: Hand scraped and features an oil lubrication system which reduces the metal friction and guarantees constant high accuracy.

Workhead: A rigid design, driven by servo motor, features reliable and precise operation. NN roller bearings and angular contact bearings in the workhead spindle reduce edge stress and friction, improving concentricity and surface finish of work piece. The table is enabled to swivel between 30° (clockwise) ~ 90° (counterclockwise).

Tailstock: Flexible and easy operation, equipped with hydraulic actuated barrel retraction by foot peddle and manual handle for easy workpiece loading and unloading. (M.T.4 Taper Center) Center pressure can be adjusted for high precision for small and thin workpieces.

S-Series: Hand Feed
P- Series: Hydraulic Driven Auto Feed
NC-Series: Touch-screen PLC interface and servo (PROFACE)

Swing over table (mm)320320320
Distance between centers (mm)500750750
Max. Grinding diameter (mm)280280280
Max. Grinding wheel (mm)405 x 56 x 127405 x 56 x 127405 x 56 x 127
Max. Load held between centers150-kg150-kg150-kg
Max. Grinding wheel speed33 m/s33 m/s33 m/s
Wheelhead handwheel feed stroke160160160
Wheelhead automatic rapid feed stroke404040
Wheelhead automatic infeed stroke0.0010.0010.001
X-axis min. resolution increment0.0010.0010.001
X-axis rapid traverse speed666
Z-axis min. resolution increment (mm)
Z-axis can be swiveled manually in deg.0 ~ +80 ~ +50 ~ +5
Z-axis min. automatic reciprocating stroke10 ~ 1410 ~ 1410 ~ 14
Workhead spindle speed5 - 750 rpm5 - 750 rpm5 - 750 rpm
Workhead swiveling angle90° - 30°90° - 30°90° - 30°
Tailstock hyd. Sleeve retraction (mm)353535
Tailstock centerM.T.4M.T.4M.T.4
Wheel spindle motor5-hp5-hp5-hp
Workhead spindle servo1-kw1-kw1-kw
Internal grinding motor1-hp1-hp1-hp
Machine dimensions (cm)281x227x185367x227x185463x227x185
Machine weight2800-kg3700-kg3900-kg
Specifications subject to change. Please contact us for more information.
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