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Showing posts with the label Grinding

GMN Grinding Spindles Deliver Speeds Of 250,000rpm

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Jena Tec is selling GMN Nuernberg 's high-speed and high-frequency machining spindles in the UK. GMN's UHS series provides a robust oil-lubricated grinding spindle for speeds up to 250,000rpm, coupled with an exacting stability and geometric tolerance. A minimised oil/air dosing system provides the correct amount of lubrication to the spindle and reduces maintenance and running costs throughout its life. Jena Tec's automation division can supply the UHS series from GMN, including integration or retrofit to existing machines. Processing small internal diameters with optimum cutting speeds requires high rotational speeds. New GMN spindle ball bearings with high-speed characteristics permit 250,000 revolutions per minute, for instance, with high spindle rigidity and load capacity. Optimised lubrication of high-speed spindles offers great potential for increasing performance, while on-demand minimal lubrication lowers oil consumption and increases service life. In future, integ...

Studer Adds Combitec Internal Cylindrical Grinding

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Studer has announced that it has acquired Combitec as a subsidiary and can now offer the CT-450L, CT-960 and the S120 production grinding machines. The CT-450L CNC internal and universal cylindrical grinder for new users is the light version of the Combitec CT-450. With a range of applications, the CT-450L is suited to universal internal grinding applications, grinding collet chucks, and machining brittle and hard materials. It features a linear spindle arrangement, use of either one or two spindles with speeds of 28000-60000rev/min, and cross-slide design. The CT-450 provides a range of expansion options, such as a C-axis for grinding all types of threads. The CT-960 internal, universal and radius grinder is a high-precision machine with a B-axis swivel to 91deg. A turret for up to four spindles allows efficient grinding of small to medium-sized workpieces, the company said. In this particular design, the machine is suited for universal grinding tasks as well as grinding complex work...