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STP618 Surface Grinders

Product Description

Affordable and easy to operate, the Supertec 618 series of surface grinders are designed and built for accuracy, durability and smooth performance. Available in 5 different models, these machines offer many features and solutions to increase your productivity.

STP-618M Hand Feed Surface Grinder
STP-1A618 Hydraulic Table Travel Grinder
STP-2A618 Hydraulic Table, Cross and Down Feed Grinder
STP-618CII Hydraulic Table, Cross and Down Feed Grinder
STP-618CXII Hydraulic Table, Cross and Down Feed Grinder, and Slicer

Stringent Quality Control to Supertec Specifications:

  • Work table flatness: 0.00012″
  • Parallelism of longitudinal movement: 0.0001″/18″
  • Parallelism of cross movement: 0.000080″/6″
  • Run-out of wheel taper: 0.000060″

Precision Cartridge Spindle for High Accuracy
High rigidity spindle with four preloaded class 7(P4) bearings and run-out of spindle taper less than 0.000060″ T.I.R. provides quiet, vibration free operation for better workpiece accuracy and surface finish. The cartridge type spindle is interchangeable for easy maintenance and field replacement. Spindle bearings are grease sealed for life.

Poweful 3HP Low Vibration Spindle Motor
3 HP V3 grade spindle motor assembly is dynamically balanced for low vibration and powerful
output to achieve precision work standards and better grinding capability.

Smooth Ball Ways
The ball way table travels on hardened and ground guideways to ensure smooth, easy movement of table for better quality surface finish and longer way life.

Hand Scraped Double V Base and Saddle Ways
Cross way surfaces are hand scraped and Turcite coated for absolute flatness and high wear resistance. Thus, It assures a smoother saddle movement for higher accuracy and longer life.

 

Rugged Construction
All castings are heat tempered and stress relieved twice during the manufacturing process to assure stability of the machine structure and resist deflection under load.
Massive one-piece cast column is heavily ribbed for rigidity. Hardened & ground tool steel column ways with cast spindle slide is precision fit for smooth gravity downfeed.

Auto Lubrication System w/Waste Reservoir
The lubrication system continuously floods the saddle, the column ways, and the leadscrews with non-recirculated filtered lube oil for better performance and less maintenance.

Table Reversal Mechanism
The table reversal is hydraulically powered and actuated by non-contact proximity switches. Table speed and stroke are infinitely variable and can be easily adjusted for ease of operation and higher grinding efficiency. (except 618M)

0.000050″ Micro Downfeed and Crossfeed

Optional down feed and cross feed micrometer attachments are calibrated to 0.000050″. Finer
adjustment by engaging worm gear allows higher grinding tolerance with ease. (standard on CII/CXII)

Mitsubishi PLC control uses a menu-driven LCD touch screen technology for simple operation. (CII and CXII Models only)
Step 1
Choose the following functions:

  • Grinding Mode Selection
  • Down Feed Selection
  • Table Parking Selection
  • Jog Setting or Next Screen

Step 2

Fill in the blanks to set total stock removal, total fine gringing amount, rough increment, fine increment, spark-out passes, & reset height, and press cycle start to complete automatic grinding cycle.

CII Grinding Mode

1. Semi-automatic mode 2. Surface mode 3. Plunge mode 4. Crisscross mode
semi-automatic-mode surface-mode Plunge mode crisscross-mode

STANDARD ACCESSORIES

Quantity Description Quantity Description
1 pc Grinding Wheel 1 set Dust Guard
1 set Wheel Flange 1 set Diamond Dresser
1 set Wheel Extractor 1 set Balancing Arbor
1 set Bolts and Pads 1 set Touch-up Paint
1 set Splash Guard (Except 618M) 1 SET Tool Box With Tools
1 set Operator’s Manual & Parts List 1 set 0.000050″ Micro Downfeed ( CII / CXII only)

OPTIONAL
ACCESSORIES Magnetic Chucks And Control

Electomagnetic Chuck 6″ x 18″
Auto. Demagnetizer (*) &nsp;
Permanent Magnetic Chuck 6″ x 18″

Sony Digital Readout System

One Axis Digital Readout (*) Elevating
Two Axis Digital Readout (*) X & Y Axis

Coolant Systems And Dust Collector

Coolant System ( + ) 40L
Coolant System W/Magnetic Separator & Paper Filter ( + ) 20L/min, 80L
Combination Coolant & Dust Collector ( + ) 50L
Dust Collector
Splash Guard

Other Accessories

Manual Parallel Dressing Attachment (*)
Balancing Stand
Spare Grinding Wheel 8″X1/2″ X1 1/4″
Spare Wheel Flange
Micro Downfeed 0.000050″ (*)
Micro Crossfeed 0.000050″ (*)
Universal Wheel Guard

SPECIFICATIONS

DESCRIPTION MODEL STP-618M STP-1A618 STP-2A618 STP-618CII STP-618CXII
General
Capacity
Table Size 6″ x 18″ (150 x 450mm)
Max. Grinding Length 19″ (480mm)
Max. Grinding Width 6″ (170mm)
Distance from Table Surface to
Spindle Centerline
19.3″ (490mm)
Standard Magnetic Chuck Size 6″ x 18″ (150 x 450mm)
Longitudinal
Movement
Manual Travel 20.9″ (530mm)
Hydraulic Travel 20″ (510mm)
Table Speed (infinitely 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) 0.0001-0.002″(0.001-0.05mm)
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)micro downfeed
Handwheel per Revolution 0.050″ (1mm) 0.050″ (0.1mm)micro downfeed
Grinding Wheel Wheel Size (OD x W x B) ø8″ x 1/2″ x ø1-1/4″ (ø203 x 12.7 x ø31.75mm)
Speed (50Hz/60Hz) 2850rpm/3450rpm
Motor Spindle Motor 3HP (2.3kw)
Crossfeed Motor 25w 1/2HP (0.4kw)
Elevating Motor 1/2HP (0.4kw)
Hydraulic Motor 1HP (0.75kw)
Floor Space Total Space Required(L x W x H) 76″ x 43″ x 69″(1950 x 1100 x 1770mm) 76″ x 59″ x 69″(1950 x 1500 x 1770mm)
Weight 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) 5HP (3.8kw)
Packing Dimension (L x W x H) 58″ x 44″ x 76″ (148 x 110 x 194cm) 1″ x 49″x 76″ (155 x 124 x 194cm)

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