• Both grinding & regulating wheel spindles are made of NI-CR-MO alloy steel, which is normalized and carbonized hardened and ground for longer spindle life and better accuracy.
  • Hydrostatic Babbitt bearings type spindle with a 3-point support design, surrounded by a high pressure oil film, eliminates metal-to-metal contact to provide heavy duty grinding capability as well as high vibration damping performance.
  • A pressure switch interlock prevents spindle start-up until oil pressure is established. This pressure switch interlock also stops the spindle if oil pressure fails for longer spindle life.
  • The regulating wheel travels on double V ways are hand-scraped and Turcite coated for precise and smooth movement to ensure high accuracy and longer way life.
  • Both grinding & regulating wheels equip with hydraulic dressing unit. Dressing speed is infinitely variable. Various profile dressing can be achieved with optional template.
  • Hydraulic dressing unit for the regulating wheel can be rapidly and precisely swiveled up to ±3°for grinding taper in infeed grinding and for providing better contact between workpiece and grinding wheel to achieve better surface roughness, roundness, & cylindricity.
  • All gears in the gearbox are made of Chrome-Molybdenum alloy steel (SNCM-21), are hardened and precision-ground for smooth running and low noise.
  • The hydraulic system is air cooled to maintain constant oil temperature and separated from machine to eliminate vibration and dissipate heat.
  • Optional automatic loading & unloading for infeed & thrufeed can be custom-built to meet your requirements, so machine can run unattended, at a high production rate, while maintaining a tight tolerance.


Description/ModelSTC-12S NC
General CapacityWork Diamater (with Standard Workrest) (mm)Ø1~ Ø 50 (Ø0.04"~Ø1.18")
Work Diamater (with Special Workrest) (mm)Ø30~ Ø 50 (Ø1.18"~Ø2")
Auto Infeed Increment (NC Model) (mm)Ø0.001~9.99
Grinding WheelGrinding Wheel Spindel Speeds (rpm)1900
Dressing Incrementper graduation (mm)0.02 (0.0005")
per revolution (mm)2 (0.05")
Reulating WheelReulating Wheel Spindle Speeds (Infinitely Variable) (rpm)15~310
Handwheelper graduation (mm)0.04 (0.002")
per revolution (mm)4 (0.2")
Swivelling Angle(R & L)±5°
Inclining Angle±5°~ -3°
Dressing Incrementper graduation (mm)0.02 (0.0005")
per revolution (mm)1.5 (0.059")
Rapid Feeding of Saddle Handwheelper graduation (mm)0.05 (0.00125")
per revolution (mm)7 (0.25")
Micro Feeding of Saddle Handwheelper graduation (mm)0.001 (0.00004")
per revolution (mm)0.2 (0.005")
MotorGrinding Wheel Motor (kW)5.6 / (opt.7.4)
Hydraulic Motor (kW)1.5
Infeed Servo Motor (NC model) (kW)1
Machine Size/ WeightNet Weight, approx. (kg)1800 (3960lbs)
Gross Weight, approx. (kg)2200 (4840lbs)
Packing Dimension (L x W x H - mm)2250 × 1670 × 1850 (89" × 66" × 73")

Remark:We reserve the right to modify the specification relating to any of the above machines wirhout notice.


  • Balancing Stand
  • Coolant System W/Paper Filter
  • Input Rail & Output RaiL (L:8" / EA)
  • Spare Grinding Wheel
  • Spare Wheel Flange
  • Coolant System W/MAG. Sep. &Paper Filter
  • Thrufeed Blade (Various Sizes)
  • Infeed Workrest (STD)
  • Infeed Blade (Various Sizes)
  • Hydraulic Auto Infeed Attachment
  • Air Eject Attachment
  • Long Thrufeed Guides (6FT/EA) W/Stands
  • Loading System (Conveyor Type)
  • Receiver
  • Automatic Loading For Thrufeed
  • HYD.Forming Attachment
  • Forming Plate /Forming Arbor
  • Electrical Eject Attachment
  • SBS Dynamic Balance System