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Centerless Grinder

STC-18_20

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  • 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/Model STC-18S NC STC-20S NC
General Capacity Work Diamater (with Standard Workrest) (mm) Ø1~ Ø 60 (Ø0.04"~Ø2.3") Ø1~ Ø 60 (Ø0.04"~Ø2.3")
Work Diamater (with Special Workrest) (mm) Ø60~ Ø 100 (Ø2.3"~Ø4") Ø60~ Ø 120 (Ø3.15"~Ø2.3")
Auto Infeed Increment (NC Model) (mm) Ø0.001~9.99
Grinding Wheel Grinding Wheel Spindel Speeds (rpm) 1520 1350
Dressing Increment per graduation (mm) 0.01 (0.0005")
per revolution (mm) 2 (0.05")
Reulating Wheel Reulating Wheel Spindle Speeds (Infinitely Variable) (rpm) 13~308
Handwheel per graduation (mm) 0.05 (0.002")
per revolution (mm) 3.5 (0.2")
Swivelling Angle(R & L) ±5°
Inclining Angle ±5°~ -3°
Dressing Increment per graduation (mm) 0.01 (0.00025")
per revolution (mm) 2 (0.05")
Rapid Feeding of Saddle Handwheel per graduation (mm) 0.05 (0.002")
per revolution (mm) 9 (0.35")
Micro Feeding of Saddle Handwheel per graduation (mm) 0.001 (0.00004")
per revolution (mm) 0.2 (0.005")
Motor Grinding Wheel Motor (kW) 11.2 / (opt.15) 15 / (opt.19)
Hydraulic Motor (kW) 1.5
Infeed Servo Motor (NC model) (kW) 1.5
Machine Size/ Weight Net Weight, approx. (kg) 3000 (6600lbs) 3400 (7480lbs)
Gross Weight, approx. (kg) 3500 (7700lbs) 3700 (8140lbs)
Packing Dimension (L x W x H - mm) 2730 × 2240 × 2060
(107" × 88" × 81")
2730 × 2250 × 2060
(107" × 89" × 81")
 

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

Optional Accessories

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

STC-18~20's Application