Used Cylindrical Grinding Machines for Sale 200

Cylindrical grinding produces round geometries — shafts, pins, bores, and bearing surfaces — with the dimensional accuracy and surface finish that turning alone cannot achieve. The process is essential wherever tolerance requirements drop below 0.01mm or surface finish specifications demand Ra values under 0.4 micrometres.

Plain OD cylindrical grinders rotate the workpiece between centres or in a chuck while a grinding wheel traverses along its length. These machines are optimised for external diameters, shoulders, and tapers. Centre-type grinding provides the highest concentricity because the workpiece rotates on the same centre points used during prior turning operations, eliminating any re-clamping error.

Internal grinders use small-diameter grinding spindles that reach inside bores to finish internal diameters, faces, and tapers. The small wheel diameter requires higher spindle speeds — often 30,000 RPM or above — to achieve appropriate surface speeds. Internal grinding spindle condition is critical and expensive to repair or replace.

Universal cylindrical grinders combine OD and ID capability in a single machine, with a swivelling headstock and wheelhead that allow angular grinding for tapers and compound surfaces. The additional flexibility comes at a cost in rigidity compared to dedicated OD or ID machines, so production shops running single-purpose work often prefer dedicated machines for maximum accuracy and throughput.

Workhead and tailstock alignment determine cylindrical accuracy — if these components are not precisely coaxial, the ground surface will exhibit taper, ovality, or lobing that no amount of wheel dressing can correct. Alignment verification should be performed during any used machine evaluation using test bars and precision indicators.

When browsing used cylindrical grinders on Exapro, check spindle bearing condition including runout and vibration levels, verify centreline height alignment between workhead and wheelhead, and inspect the condition of the table ways. A machine with worn ways produces taper across the workpiece length that cannot be compensated through grinding parameters alone.