The SUPRA-818AHD from ACER is an advanced, high-performance reciprocating surface grinder built for machine shops requiring maximum automation and accuracy for an 8-inch by 18-inch grinding area. This model is distinguished by its fully automatic three-axis control, encompassing hydraulic table traverse (X-axis), power crossfeed (Y-axis), and automatic vertical movement (Z-axis). The machine is constructed on a rigid, strongly ribbed base and column, cast from high-grade iron, with all vertical, cross, and longitudinal slideways coated in Turcite-B for minimal friction and sustained durability.

Power is supplied by a robust 3 HP direct-drive, super-precision spindle for consistent material removal. The core of the machine’s precision lies in its electronically programmable, automatic, incremental downfeed, which allows the operator to set exceptionally fine steps, ranging from 0.002 inch down to a minimum 0.00005 inch increment in both surface and plunge grinding modes. This is complemented by power rapid wheelhead positioning to speed up setup. To maximize machine lifespan and long-term accuracy, the SUPRA-818AHD includes an automatic continuous lubrication system that ensures full oiling of all slideways and screws. This combination of precision mechanics and sophisticated automation makes the SUPRA-818AHD ideal for continuous, high-tolerance grinding operations.