Centerless Grinder, Centerless Grinders

CENTERLESS GRINDER
CENTERLESS GRINDER
STC-18_20

 

 

  • 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.
1.BALANCING STAND 8.THRUFEED BLADE (VARIOUS SIZES) 15.LOADING SYSTEM (CONVEYOR TYPE)
2.MAG. SEP. &PAPER FILTER 9.INFEED WORKREST (STD) 16.RECEIVER
3.PAPER FILTER 10.INFEED BLADE (VARIOUS SIZES) 17.AUTOMATIC LOADING FOR THRUFEED
4.INPUT RAIL & OUTPUT RAIL (L:8" / EA) 11.HYDRAULIC AUTO INFEED ATTACHMENT 18.HYD.FORMING ATTACHMENT
5.LONG THRUFEED GUIDES (6FT/EA) W/STANDS 12.AIR EJECT ATTACHMENT 19.FORMING PLATE  /FORMING ARBOR
6.SPARE GRINDING WHEEL 13.ELECTRICAL EJECT ATTACHMENT  
7.SPARE WHEEL FLANGE 14.WHEEL BALANCE SYSTEM  
 


STC-18~20's APPLICATION      
     
 
    STC-18S/NC/CNC STC-20S/NC/CNC
General Vapacity Work Diamater (with Standard Workrest) Ø1 ~ 60
( 0.04" ~ 2.3" )
Ø1 ~ 60
( 0.04" ~ 2.3" )
Work Diamater (with Special Workrest) Ø60 ~ 100
( 2.3" ~ 4" )
Ø60 ~ 120
( 3.15" ~ 2.3" )
Auto Infeed Increment (NC Model) 0.001 ~ 9.99
Grinding Wheel Spindel Speeds 1520 rpm 1350 rpm
Dressing Increment per graduation 0.01 (0.0005")
per revolution 2 (0.0625")
Reulating Wheel Spindle Speeds (Infinitely Variable) 15~308 rpm
Handwheel per graduation 0.05 (0.002")
per revolution 3.5 (0.2")
Swivwlling Angle ±5°
Inclining Angle +5° ~ -3°
Dressing Increment per graduation 0.01 (0.0005")
per revolution 2 (0.00625")
Rapid Feeding of Saddle Handwheel per graduation 0.05 (0.002")
per revolution 9 (0.25")
Micro Feeding of Saddle Handwheel per graduation 0.001 (0.00005")
per revolution 0.2 (0.00625")
Motor Grinding Wheel Motor 15 HP / 20 HP 20 HP / 25 HP
Hydraulic Motor 2 HP
Infeed Servo Motor (NC model) 1.5 KW
Machine Net Weight 3000 kgs (6600 lbs) 3400 kgs (7480 lbs)
Gross Weight 3500 kgs (7700 lbs) 3700 kgs (8140 lbs)
Package Packing Dimension (L x W x H) 2730 x 2240 x 2060
(107" x 88" x 81")
2730 x 2250 x 2060
(107" x 89" x 81")
 Remark:We reserve the right to modify the specification relating to any of the above machines wirhout  
               notice.
01 STC-2020NC