Supertec STC-20

Hydro-static "Babbit" bearings for grinding wheel and regulating wheel spindles
with auto lubrication system
Auto lubrication creates oil film between spindle and bearings
to prevent metal-to-metal contact
Oil display for each spindle
Variable speed regulating wheel spindle
with digital tachometer speed display
Regulating wheel swivels and inclines ±5°

Slideways of regulating wheel are double Vee hand-scraped and coated with Turcite B
One-shot lubrication for slideways
Hydraulic dressers with ±3° swivel adjustment
External hydraulic system
"Bedatec" coolant system with motorized paper filtration (new 1997)
Work rest with blade on the machine
Two additional work rests with extra blades
"SONY" LH-51 digital readout display for regulating wheel slide

Capacity (standard workrest) 0.04" to 2"
Capacity (special workrest) 2" to 3.54"
Grinding wheel diameter × width × bore 20" × 8" × 12"
Grinding wheel spindle speed 1070 RPM
Grinding wheel motor 20 hp
Grinding wheel dressing increment per graduation 0.0005"
Grinding wheel dressing increment per revolution 0.0787"

Regulating wheel diameter × width × bore 12" × 8" × 5"
Regulating wheel spindle speeds (10 steps) 13–308 RPM
Regulating wheel power 2 hp
Regulating wheel dressing increment per graduation 0.00005"
Regulating wheel dressing increment per revolution 0.0625"

Feed of handwheel per graduation 0.0005"
Feed of handwheel per revolution 0.006"

Rapid feed of saddle handwheel per graduation 0.0002"
Rapid feed of saddle handwheel per revolution 0.25"
Micro feed of saddle handwheel per graduation 0.00005"
Micro feed of saddle handwheel per revolution 0.00625"
Floor space with hydraulic tank and coolant 77" × 71" × 59"
Weight 7000 lb