SURFACE GRINDERS STP SERIES

  • All essential castings are rib reinforced to provide a rigid machine structure for long lasting accuracy and stability.
  • The precision cartridge spindle equipped with 4 pieces of preloaded class 7 (p4) super precision angular contact ball bearings to ensure high accuracy and superior grinding finish.
  • All slideways are Turcite-B coated and precisely hand scraped to provide a smooth movement for better accuracy and longer way life.
  • The rigid wheelhead travels on wide contact hardened and ground guideways and is precisely positioned with a stepping motor to ensure better downfeed repeatability. (ADS model only).
  • Crossfeed mechanism incorporate with a precision leadscrew, AC inverter provides smooth, accurate crossfeed and allows criss-cross grinding for better workpiece finish.
  • Hydraulics, coolant systems are separated from machine to eliminate vibration and dissipate heat.
  • All moving surfaces and rotating parts are continuously lubricated by an auto-lube system to ensure long service life and maintain maximum accuracy. An alarm light will illuminate if oil pressure drops below pressure.
  • Mitsubishi PLC control uses a menu-driven LCD touch screen is easy to learn and easy to set.
DESCRIPTION / MODEL STP-2040 STP-2060 STP-1022 STP-1428 STP-1834
General Capacity
Table dimensions 500 x 1000 500 x 1500 200 x 500 300 x 600 400 x 800
Max. stroke 1050 1550 550 650 850
Max. grinding width 510 210 310 410
Max. table load (incl. chuck) 850 kgs 1100 kgs 300 kgs 400 kgs 580 kgs
Std. magnetic chuck size 500 x 1000 500 x 1500 200 x 500 300 x 600 400 x 800
Longitudinal motion X-Axis
Manual traverse 1200 1700 620 710 960
Hydraulic traverse 1150 1650 570 650 920
Table speed (infi. Variable) 3-25 m/min
Cross motion Z-Axis
Manual travel 560 250 345 460
Rapid traverse (60/50Hz) 1710/1425 mm/min 960/800 mm/min 1200/1000 mm/min
Automatic increments feeds 2~10 0.5 ~8
Handwheel per graduation 0,02
Handwheel per revolution 5 4 5
Vertical downfeed Y-Axis
Rapid traverse (60/50Hz) 285/240 mm/min 190/160 mm/min
Automatic downfeed (ADH) ~ 0.002/0.006/0.01 0.001/0.003/0.005
Automatic downfeed (ADS) 0.001~0.099
Handwheel per graduation 0,001 0,002 0,001
Handwheel per revolution 0,1 0,2 0,1
Grinding wheel
Dia x width x bore 355 x 50 x 127 205 x 22 x 32 305 x 31 x 76 355 x 50 x 127
Spindle speed (60/50 Hz) 1710/1425 rpm 3420/2850 rpm 1710/1425 rpm
Motor
Spindle motor 7.5 HP 10 HP 2 HP 3 HP 5 HP
Crossfeed motor 1/4 HP 1/5 HP
Elevating motor 1/2 HP 1/4 HP
Hydraulic motor 3 HP 5 HP 1 HP 2 HP 3 HP
Machine
Net weight 4700 kgs 6560 kgs 1300 kgs 1750 kgs 3500 kgs
Gross weight 5100 kgs 7000 kgs 1500 kgs 2050 kgs 3800 kgs
Packing dimensions
(L x W x H)
3340 x 2280 x 2550 4520 x 2280 x 2550 1820 x 2250 x 2250 1970 x 2250 x 2250 2730 x 2250 x 2250
Caracteristics
Machine type Cross movement column Cross movement table