Special Granite Surface Plate

Special granite surface plate Black Granite Surface Plates are accurate for use in metrology labs and durable enough for the shopfloor. The black color is due to very high crystalline quartz content. Even distribution of large quartz crystals provides a smooth finish. Plates meet or exceed 80 lb...

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Special granite surface plate

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Black Granite Surface Plates are accurate for use in metrology labs and durable enough for the shopfloor. The black color is due to very high crystalline quartz content. Even distribution of large quartz crystals provides a smooth finish. Plates meet or exceed 80 lb per square foot (24kg per 1,000 sq cm) load bearing specifications, DIN 876 Standard, GB standard and U S Federal Specification GGG-P-463c for flatness.

 

Accurate for use in metrology laboratories and wear resistant for use in abrasive shop environments

The finest, most durable granite surface plate available to industry today.

The name is derived from the fact that it has the highest crystalline quartz content of any granite surface plate.

Even distribution of large quartz crystals provides a smooth finish, which significantly reduces wear on the surface plate and the instruments used on it.

Fine micro-finish, combined with the natural voids in the surface, prevents wringing and provides a velvety-smooth tool action.

Pink granite in average daily use requires resurfacing about once a year, while black plates used in these same plants have required resurfacing only once every three to five years, on average.

Meets or exceeds U.S. Federal Specification GGG-P-463c and  DIN 876 Standard, GB standard  for flatness.

Great surface hardness and wear resistance – the highest percentage of quartz crystals of any granite plate.

Smooth, jewel-like quartz bearing points protect accuracy and finish of both the surface and the tools used on it.

Quality and economy combined

Meets or exceeds 50 lb per square foot (3010kg per 1cubic meter) load bearing specifications. Available in 200 lb (90kg) test series.

Standard-size plates are mounted on resilient support pads, providing isolation from normal vibration and a non-distorting 3-point suspension.

Packed one per crate with skids for forklift handling.  

Registered Accuracy: Before shipment, each granite surface plate must pass a critical final inspection to prove that its entire surface is within specified tolerance.


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