The 2022 Okamoto ACC-2040-SA1 is a saddle-type automatic reciprocating surface grinder built around a 20 by 40 inch magnetic chuck table, a 5 HP spindle, and Okamoto's signature ground cast iron base for vibration-damped finish work. The SA1 platform delivers an automatic X-axis traverse cycle with manual downfeed and cross-feed, making it a job-shop staple for tool steel, die plates, fixture pads, and precision ground parts that demand the surface finish Okamoto is known for. With a current-generation 2022 build and the parts and service network that Okamoto has maintained across the US for decades, the unit drops onto a tool room floor and gets to work the same week. Compared to earlier Okamoto ACC saddle-type generations and lower-tier imported reciprocating grinders, the ACC-2040-SA1 brings refined linear motion guideways, a tighter spindle assembly for higher running accuracy, modernized automatic cycle controls, and the same hand-scraped Okamoto ways that the brand uses on its CNC grinders. The result is a precision surface grinder on a 2022 chassis with the kind of repeatability that production tool-and-die work demands, at an automatic-tier price rather than the cost of moving to a full CNC grinder. MakeOkamoto ModelACC-2040-SA1 Year2022 Product #17046 Price Please login to see price. Make an Offer Get a Quote Share Ask a Question About This Machine A 2022 Okamoto ACC-2040-SA1 drops a 20 by 40 inch saddle-type automatic surface grinder on your floor with a 5 HP spindle, manual downfeed for fine tool-and-die work, and the kind of ground cast iron frame Okamoto built its reputation on. Drop this Okamoto into a tool room or production shop and you immediately gain the surface finish quality that smaller imported grinders struggle to match, on a 2022-vintage chassis with parts and service still well-supported across the US. **All descriptions and specifications are preliminary and must be confirmed by buyer prior to purchase.** Live Tooling / Milling Specifications Vertical Table / Pallet Size: 20" x 40""" X-Travel: 45.30" Spindle Spindle Motor: 5 HP Second Spindle Tool Changer Turret Control Control Make/Model: Okamoto MDI Touch Control Tailstock / Steadyrest Options Product Description: CAPACITY - Working Surface (Table): 20" x 40" - Magnetic Chuck Size: 20" x 40" - Max Longitudinal Travel: 45.3" - Max Distance, Wheel to Table: 21.5" - Table Load Capacity (incl. chuck): 1,540 lbs GRINDING WHEEL - Standard Wheel: 14" diameter x 2" wide x 5" bore MOTORS - Grinding Wheel Spindle: 5 HP standard, 10 HP optional - Hydraulic Pump: 2 HP - Vertical Feed (AC Servo): 0.5 HP - Cross Feed (AC Servo): 1 HP LONGITUDINAL (TABLE) FEED - Hydraulic Feed Rate: 1 to 82 ft/min CROSS FEED - Manual Crossfeed per revolution: 0.0004" / 0.040" / 0.200" (coarse), 0.00004" / 0.0004" / 0.002" (fine) - Automatic Crossfeed, intermittent: 0.02" to 0.79" - Automatic Crossfeed, continuous: 0.004" to 0.04" / min - AC-driven crossfeed minimum increment: 0.0001" VERTICAL (DOWNFEED) - Automatic Downfeed: 0.00005" to 0.0015" (coarse), 0.000004" to 0.001" (fine) - Manual Pulse Feed per revolution: 0.001" / 0.01" / 0.05" (coarse), 0.0004" / 0.004" / 0.04" (fine) - Manual Pulse Feed Hand Wheel Graduation: 0.00001" / 0.0001" / 0.0005" (coarse), 0.000004" / 0.00004" / 0.0004" (fine) - AC-driven vertical minimum increment: 0.00001" CONTROL / STANDARD FEATURES - Okamoto MDI Touch Control (color touch screen) - Programmable dressing with dress compensation - Standard Over-the-Head Wheel Dresser - Touch Pad Control for cross and vertical rapid feeds - Teach Function for crossfeed position - Micro Feeder standard - Auto Park - Manual Pulse Generator built into control CONSTRUCTION - Heavily ribbed Meehanite cast iron base - Saddle-type design - Double-V slideways (table) - Hydraulically driven table with non-contact switches for table reversal - Auto lubrication on all slideways - Wide frame eliminates table overhang - Fully supported table