Surface Grinding Machines

Surface grinders: manual or hydraulic

A surface grinder flattens faces and holds parallelism where milling no longer gives the accuracy needed: plates, punches, dies, strips and guideways. The part is held on a magnetic chuck and the wheel removes hundredths of a millimetre per pass.

LUNA Atlas S comes in three levels. The LUNA Atlas S 618A and S 818A are bench-type manual machines with 460×180 and 480×200 mm tables, a 200×13 mm wheel and 1.1 kW; the 618A VT version reaches Ra 0.16 µm. The AHR models have a hydraulic table and an electric drive on the vertical axis: the LUNA Atlas S 2550 AHR, 3063, 30100, 4080 and 40100, with tables from 250×500 to 406×1020 mm. The AHD models are the same range but with a servo drive on the vertical axis, a PLC and an automatic cycle.

The Taiwanese Palmary PSG line has 20 models in three versions. The H and AH have a hydraulic table, and the operator handles the vertical feed by hand; the cross feed is manual on the H and automatic on the AH. Tables run from 450×150 mm on the PSG-1545H to 800×400 mm on the PSG-D4080AH, with a 180×13 mm wheel on the small tables and 355–405 mm on the large ones, 900–3250 kg. The AHR is for large plates and beds: tables from 1000×500 mm on the PSG-50100AHR to 2000×700 mm, a servo-driven vertical axis, a 405×50×127 mm wheel, a 7.46 kW drive (11.19 kW optional), 6–9 t.

If the cycle has to repeat by itself, look at NC surface grinders, including the Palmary PSG ACI and ACII, or CNC ones; for large plates and beds, at the gantry machines. How to compare grinding machines is covered on the grinding machines.