Precision Grinding Spindles

Precision grinding spindles serve aerospace, automotive, medical device, toolroom and mold/die, and general industrial manufacturing. Applications include grinding turbine components, camshafts, bearing races, surgical implants, and precision shafts. Both surface and cylindrical grinding machines in this category are engineered to meet the strict dimensional and surface finish requirements of these demanding sectors.

Machines in this category are engineered for micron-level accuracy. For example, the Okamoto ACC-DX Series offers infeed increments as fine as 0.00005 inches, while Shigiya CNC cylindrical grinders deliver consistent diameter, roundness, and surface finish tolerances suitable for aerospace and medical applications. Rigid machine structures and thermal stability features ensure these tolerances are maintained over extended production runs.

Yes. Many Shigiya CNC cylindrical grinders, including the GP-45D, GPH-30B, GPC-30B, GPL-30B, GPH-20, and GPC-40B, feature open CNC architecture and automation-ready designs fully compatible with robotic loaders, conveyors, in-line inspection systems, and pallet handling for lights-out manufacturing environments.

Surface grinders, such as the Okamoto ACC-CAiQ and ACC-DX Series, are used to produce flat, precise surfaces on workpieces held on a magnetic chuck. Cylindrical grinders, such as the Shigiya GP and GPL series, grind the outer or inner diameter of rotating cylindrical parts like shafts, bushings, and bearing races. The choice depends on part geometry and the type of surface finish required.

The range is broad. Surface grinders cover table working areas from 6x20 inches up to 32x140 inches. Cylindrical grinders support swing-over-table diameters from 200mm to 550mm and center distances from 100mm up to 6,000mm, accommodating parts ranging from small medical pins and bushings to large industrial shafts and die bases weighing up to 1,000 kg.

Many machines include or offer optional coolant and lubrication systems. The Okamoto ACC-CAiQ features an independent hydraulic coolant tank, while the ACC-CHiQ and ACC-DX Series offer optional coolant systems with magnetic dust separators and paper filter systems. The ACC-618DX uses a gravity feed lubrication system. Proper coolant management is critical for maintaining surface finish quality and extending machine and grinding wheel life.