The Okamoto ACC 1224ST is a 3-axis automatic hydraulic surface grinder with the reliability and accuracy that have made Okamoto a staple in toolrooms, die shops, and precision production environments. Built on heavily ribbed Meehanite cast construction with full-contact double-vee ways for true tracking, it grinds workpieces up to 12" x 24" on its electro-magnetic chuck, with 29.5" of longitudinal table travel, 13.6" of cross travel, and 13.7" of clearance under a 12" wheel. A 5 HP spindle drives the 12" x 1-1/2" x 5" grinding wheel, while hydraulic longitudinal table feed of 1 to 82 FPM, intermittent and continuous hydraulic cross feed, auto incremental downfeed in surface and plunge modes resolved as fine as 0.0001", automatic sparkout of up to five passes, power elevation, and a power over-the-wheel dresser let the machine run a complete grinding cycle with minimal operator input. A 3 HP hydraulic pump motor and centralized pendant-mounted solid-state control round out a grinder ready to drop onto a working floor. Compared to Okamoto's older manual hand-feed surface grinders of similar 12" x 24" capacity, where the operator cranks the table and works the downfeed by hand on every pass, the ACC 1224ST automates all three axes hydraulically and meters downfeed automatically as fine as 0.0001" through its centralized control. The additions of automatic sparkout, dedicated surface and plunge grinding modes, power elevation, and the variable-hold neutrofier deliver consistent stock removal and finish from the first part to the last, removing the operator judgment that an older manual machine demands on every stroke. MakeOkamoto ModelACC-1224ST Year2010 or older Product #16951 Price Please login to see price. Make an Offer Get a Quote Share Ask a Question About This Machine This Okamoto ACC 1224ST puts a 12" x 24" electro-magnetic chuck, a 5 HP spindle on a 12" wheel, and full hydraulic 3-axis automation to work, running the long grinding pass for you while it holds downfeed in tenths shift after shift. It is a simple, field-proven toolroom grinder that lets your shop turn out repeatable, precision-ground surfaces on bolster plates, mold details, and gauge work without an operator chained to the handwheels. **All descriptions and specifications are preliminary and must be confirmed by buyer prior to purchase.** Live Tooling / Milling Specifications Vertical Table / Pallet Size: 12" x 24"" X-Travel: 29.50" Y-Travel: 13.60" Spindle Spindle Motor: 5 HP Second Spindle Tool Changer Turret Control Tailstock / Steadyrest Options Product Description: Hydraulic Automatic Surface Grinder (3-Axis) 12" x 24" Electro-Magnetic Chuck Maximum Height Under 12" Wheel 13.7" Grinding Wheel 12" x 1-1/2" x 5" Longitudinal Hydraulic Table Feed 1 - 82 FPM Hydraulic Intermittent Cross Feed 0.02" - 0.8" Hydraulic Continuous Cross Feed 4 - 40 IPM Cross Hand Feed 0.25" Per Revolution Cross Feed Graduation 0.001" Vertical Downfeed Per Table Stroke 0.0001" - 0.0005" Vertical Downfeed Per Saddle Reversal 0.0001" - 0.0015" Vertical Hand Downfeed 0.05" Per Revolution Vertical Downfeed Graduation 0.0001" Vertical Rapid Feed Rate 19" IPM Hydraulic Pump Motor 3 HP Vertical Rapid Feed Motor 0.5 HP Centralized Operator Controls Auto Incremental Downfeed, Surface and Plunge Modes Automatic Wheel Sparkout Up to 5 Passes Power Elevation Power Over-the-Wheel Dresser Variable Hold Neutrofier on Console Control Coolant System Electrical: 230-460V, 3 Phase, 60 Hz