Accura Ships 0.15 micron Bearing Grinder(Pic)
Roundness in pre-delivery tests achieved 0.15 micron for a ball bearing inner race, and 0.25 micron for a ball bearing outer race.
The grinder X-axis has a hydrostatic bearing workhead driven by a linear motor. The other two axes are an air bearing ID/OD spindle wheelhead and a ball bearing rotary surface spindle wheelhead. The wheelheads are independently CNC controlled, using servomotor ball screws. The entire assembly is mounted on a thermally stable natural granite base.
The grinder allows workpieces up to 250mm tall, offers a 300mm swing, and 350mm X-axis travel. A variety of options are available such as autoloaders and gauging
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