STC-12

Centerless Grinder

Specification:

  • 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.
Specifications
STC-12S/NC
General Vapacity Work Diamater (with Standard Workrest) Ø1 ~ 50 ( 0.04" ~ 1.18" )
Work Diamater (with Special Workrest) Ø30 ~ 50 ( 1.18" ~ 2" )
Auto Infeed Increment (NC Model) 0.001 ~ 9.99
Grinding Wheel Spindel Speeds 1900 rpm
Dressing Increment per graduation 0.02 (0005")
per revolution 2 (0.05")
Reulating Wheel Spindle Speeds (Infinitely Variable) 15~310 rpm
Handwheel per graduation 0.04 (0.002")
per revolution 4 (0.2")
Swivwlling Angle ±5°
Inclining Angle +5° ~ -3°
Dressing Increment per graduation 0.02 (0.0005")
per revolution 2 (0.05")
Rapid Feeding of Saddle Handwheel per graduation 0.02 (0.00125")
per revolution 7 (0.25")
Micro Feeding of Saddle Handwheel per graduation 0.001 (0.00005")
per revolution 0.2 (0.005")
Motor Grinding Wheel Motor 7.5 HP / 10 HP
Hydraulic Motor 2 HP
Infeed Servo Motor (NC model) 1 KW
Machine Net Weight 1800 kgs (3960 lbs)
Gross Weight 2200 kgs (4840 lbs)
Package Packing Dimension (L x W x H) 2250 x 1670 x 1850 (89" x 66" x 73")

* We reserve the right to modify the specifications relaring to any of the above machines without notice.

  • BALANCING STAND
  • COOLANT SYSTEM W/MAG. SEP. &PAPER FILTER
  • COOLANT SYSTEM W/PAPER FILTER
  • INPUT RAIL & OUTPUT RAIL (L:8" / EA)
  • LONG THRUFEED GUIDES (6FT/EA) W/STANDS
  • SPARE GRINDING WHEEL
  • SPARE WHEEL FLANGE
  • THRUFEED BLADE (VARIOUS SIZES)
  • INFEED WORKREST (STD)
  • INFEED BLADE (VARIOUS SIZES)
  • HYDRAULIC AUTO INFEED ATTACHMENT
  • AIR EJECT ATTACHMENT
  • ELECTRICAL EJECT ATTACHMENT
  • SBS DYNAMIC BALANCE SYSTEM
  • LOADING SYSTEM (CONVEYOR TYPE)
  • RECEIVER
  • AUTOMATIC LOADING FOR THRUFEED
  • HYD.FORMING ATTACHMENT
  • FORMING PLATE /FORMING ARBOR
  • STC-1206NC