STP-618/818 Series

Surface Grinder (Saddle Type)

Specification:

  • 3 HP V3 grade spindle motor for powerful output to achieve precision work standards and better grinding capability.
  • Cartridge spindle w/4 preloaded class 7(p4) bearings and run-out of taper nose better than 0.000060” T.I.R. provides quiet, vibration free operation for better work pieces accuracy.
  • Optional 0.000050” micro down feed and micro cross feed.
  • Vertical handwheel at the waist level.
  • The steel ball way table travels and ground guide ways ensures smooth, easy movement of table.
  • Double V cross ways are hand scraped and Turcite coated for absolute flatness and high wear resistance.
  • All castings are tempered and stress relieved twice to assure stability of the machine structure and resist deflection under load.
  • Hardened & ground column ways with cast spindle slide is precision fit for no “hang-up” gravity downfeed.
  • PLC control uses a menu-driven LCD touch screen is easy to learn and easy to set. Simply fill in the blanks to set total grinding amount, rough increment, fine increment, sparkout passes, feeding direction, parking position, wheelhead retract distance, and press cycle start to complete automatic grinding cycle. (CII models only)
  • Grinding cycles for CII model: semi-automatic, surface, plunge, & crisscross.
  • Index able table handwheel for ease of operation.(618M only)
  • Work table flatness shall be within 0.00012”.
  • The table reversal is actuated by non-contact proximity switches, and hydraulically powered, table speed is infinitely variable.(except 618M)

  • The automatic lubrication system continuously floods saddle & column ways, bearings, and lead screws for better machine performance and less maintenance.

Specifications
STP-618M
STP-1A618
STP-2A618
STP-618CⅡ
Capacity Table Size 6"x18"(150x450mm)
Max. Grinding Length 19"(480mm)
Max.Grinding Width 6"(170mm)
Distance from Table Surface to Spindle Center 19.3"(490mm)
Standard Mag. Chuck Size 6"x18"(150x450mm)
Longitudinal Movement Manual travel 20.9"(530mm)
Hydraulic Travel - 20"(510mm)
Table Speed
(infi. variable)
- 16-82 fpm (5-52m/min)
Cross Movement Manual travel 7"(180mm)
Rapid Travel, approx. - 38ipm(960mm/min)
Automatic Traverse Travel - 6-3/4"(170mm)
Automatic Traverse Increment - 0.02-0.24"(0.4-6mm)
Handwheel per Graduation 0.001"(0.02mm)
Handwheel per Revolution 0.2"(5mm)
Vertical Downfeed Rapid Travel, approx. - 4ipm
(100mm/min)
Automatic Traverse Increment - 0.0001-0.002"
(0.001-0.05mm)
Handwheel per Graduation 0.0001"(0.005mm) 0.000050"(0.0001mm)-Option 0.000050"
(0.0001mm)
Handwheel per Revolution 0.050"(1mm) 0.050"(0.1mm)
micro downfeed
Grinding Wheel Wheel Size
(OD x W x B)
Ø8"x1/2"xØ1-1/4"(Ø203x12.7xØ31.75mm)
Speed (50Hz/60Hz) 2850rpm/3450rpm
Motor Spindle Motor 3HP(2.3kw)
Crossfeed Motor - 25w
Elevating Motor - 1/2HP(0.4kw)
Hydraulic Motor - 1HP(0.75kw)
Machine Total Space Required (L x W x H) 76"x43"x69"
(1950x1100x1770mm)
76"x59"x69"
(1950x1500x1770mm)
Net,approx. 1588lbs(722kgs) 1775lbs(807kgs)
Gross,approx. 1808lbs(822kgs) 1995lbs(907kgs)
Total Rated Power, approx. 3HP(2.3kw) 4HP(3kw) 4.1HP(3.1kw) 4.6HP(3.5kw)
Packing Dimension (L x W x H) 58"x44"x76"
(148x110x194cm)
61"x49"x76"
(155x124x194cm)

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

  • BALANCING STAND
  • PARALLEL DRESSING ATTACHMENT
  • ELECTROMAGNETIC CHUCK
  • AUTO. DEMAGMETIZER
  • PERMANENT MAGNETIC CHUCK
  • MANUAL DEMAGNETIZER
  • ANGLE DRESSING ATTACHMENT
  • RADIUS DRESSING ATTACHMENT
  • DIGITAL READOUT
  • SPARE WHEEL FLANGE
  • COOLANT SYSTEM W/MAG. SEP. & PAPER FILTER
  • COOLANT SYSTEM W/PAPER FILTER
  • COMBINE COOLANT & DUST COLLECTOR
  • DUST COLLECTOR