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Used Machinery and Machine ToolsUsed MachineryUsed Machine ToolsThousands of Used Metalworking and Plastic Machines & New Machine Tools Photos, Full Descriptions and Prices - Fast & Easy * Manual Lathes, Mills, Drills, Saws * Grinders, Hones, Finishing * Ovens, Furnaces & Environmental 12" CENTERLESS GRINDER, Supertec STC-20 8" Wi 12" CENTERLESS GRINDER, Supertec STC-20 8" Wi "NEW" SUPERTEC MODEL STC-20 CENTERLESS GRINDER - Both grinding & regulating wheel spindles are made of NI-CR-MO alloy steel, which is normalized and carbonized hardened and ground for longer 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, - All gears in the gearbox are made of Chrome-Molybdenum alloy steel (SNCM-21), are hardened and precision-ground for smooth - The hydraulic system is air cooled to maintain constant oil temperature and separated from machine to eliminate vibration - The optional servo driven variable speed regulating wheel helps to achieve optimal surface speed for a better cutting capability and a superior surface finish. - Optional automatic loading & unloading for infeed & thrufeed can be custom-built to meet your requirements, allowing the machine to be run unattended, at a high production rate, while maintaining a Work diameter (with standard workrest): 0.04~2 Work diameter (with special workrest): 2~4 Wheel size (Diameter x Width x Bore): 20x 8x 12 Dressing increment (per graduation): 0.0005 Dressing increment (per revolution): 0.0625 Wheel size (dia x width x bore): 12x 8x 5 Spindle speeds (10 steps): 15~308 rpm Handwheel per graduation: 0.002 Handwheel per revolution: 0.2 Dressing increment per graduation: 0.0005 Dressing increment per revolution: 0.0625 Rapid feeding of saddle handwheel Micro feeding of saddle handwheel - Grinding wheel with flange - Coolant system - Regulating wheel with flange - Diamond tools - Wheel balancing arbor - Standard thrufeed blade - Levelling bolts with blocks - Standard thrufeed workrest - Maintenance tools & tool box - Wheel extractor - Heat exchanger for hydraulic system Options & Extras (call for pricing): - Hydraulic auto infeed attachment - Std. auto vibration feeder (dia. 400mm) - Automatic loading & unloading attachment for infeed - Automatic loading for thrufeed - Outgoing conveyor & receiver - Coolant system w/mag. sep. & paper filter (20L/min, 80L) - Coolant system w/mag. sep. & paper filter (60L/min, 140L) - Coolant system w/magnetic separator (20L/min, 83L) - Coolant system w/magnetic separator (40L/min, 172L) - Coolant system w/paper filter (20L/min, 80L) - Coolant system w/paper filter (60L/min, 140L) - Grinding wheel (20"x8"x12", 38A) for STC-20 - Grinding wheel flange for STC-20 - Regulating wheel (12"x8"x5", A) for STC-20 - Regulating wheel flange for STC-20 - Thrufeed workrest (0.04" - 2") for STC-20 - Special thrufeed workrest (2"- 4") for STC-20 - Infeed workrest (0.04" - 2") - Special infeed workrest (2" - 4") for STC-20 - Thrufeed blade (various sizes) - Infeed blade (various sizes) - Input rail & output rail (L: 8"/ea) for STC-20 - Long thrufeed guides (6ft/ea) w/stands for STC-20 - Servo driven variable speed regulating wheel Machine Location: HARRISON, NJ Click Here For More Supertec Machines Click Here For More Grinders, Lappers & Hones - CENTERLESS GRINDERS(s) Call Kori at ext 7555 Call Alex at ext 7613 Finance This Equipment For Your Business - Click Here Finance Equipment For Your Business - Click Here * Machinery Values is one of the world's largest machinery dealers, in business since 1971. * New machines are covered under their own warrantees. Details of each warranty can be found within the quotation for all new machines. * Most items in our store are located in our warehouse in Harrison, New Jersey - about 9 miles from New York City. You may inspect any item prior to purchase, under power in most cases, simply by calling and arranging an inspection. There is no charge for this. Summary of My Selling Policies Machinery, Tooling and Accessories used in manufacturing are usually exempt from sales tax in our state (New Jersey). A sales tax exemption certificate may be required if you are a New Jersey company. Equipment purchased for personal use is subject to sales tax if you are a New Jersey resident. Read my policies on my SquareTrade Seal |