MGKW8250 CNC Crankshaft Grinding Machine

Between centres whenever several diameters must stay concentric to one axis — the centre holes are the datum, so inspect and lap them before precision work. Chucks or collets take over when there are no centres or a bore is the reference. On the MGKW8250, slender work past roughly ten diameters of unsupported length wants a steady rest carrying the span.

Two build points matter most on this machine: follow-up grinding: the x axis chases the pin as the crank turns, so main journals and pins are ground on the same set-up; and ddl direct-drive x axis at 20000 mm/min on a closed static pressure guideway, with a grating ruler as standard. Structure decides how a machine ages — the specification table tells you what it does new, the build tells you what it does in year five.

The MGKW8250 grinds diameters of Φ8-Φ320 mm. Ground length runs to 1000 / 1500 / 2000 / 3000 mm. Quote finished diameter, length and workpiece weight together: the three place the machine, and weight is the one buyers forget.

Both sit in the cNC crankshaft grinding machine group, so the decision is capacity and duty, not kind: put your largest part dimensions, material and yearly quantity against each specification table and one of the two will run out of a figure first. Send the drawing and we will name which of the two fits — including the case where the smaller machine does the job.

Standard configurations generally ship within 30 to 60 days of a confirmed order, with the date written into the contract. The MGKW8250 then carries a 12-month warranty on main components, handled by the plant that built it, with lifetime technical support and spare parts identified by part number at handover.