Internal Grinding Machines | UNITED GRINDING North America

Internal Cylindrical Grinding Machines

When making the most precise parts in the world, smooth surfaces made to exact tolerances both inside and out are critical. That’s exactly why manufacturers rely on STUDER internal cylindrical grinding machines. These machines create pristine surface finishes and complex part features inside rotationally cylindrical parts. This includes the grinding of diameters, radii, cones, balls, and spheres.

STUDER offers a complete range of internal cylindrical grinders, with single-clamp and simultaneous I.D./O.D. grinding capability. These machines feature Granitan® beds for incredible rigidity and advanced control technology, and they’re built to accommodate the longest parts.

At UNITED GRINDING, we are relentlessly committed to helping you meet your internal cylindrical grinding needs. If you need an ID grinder, chances are you’ll find the perfect one below.

UNITED GRINDING is your solutions partner, with products and services designed to assist you throughout the life cycle of your CNC grinding machine, including equipment sales, installation, training, applications support, preventive and predictive maintenance, parts and repair services.

If you have a project you'd like to discuss, our team will be happy to assist you.

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STUDER Internal Cylindrical Universal Grinding Machines

S100

The S100 covers the wide range of internal, face and external grinding applications. It has a workpiece length including clamping device of max. 550 mm (21.65") and a workpiece diameter of max. 420 mm (16.53").

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S121

The S121 is a universal internal cylindrical grinding machine for medium-sized workpieces in individual and small batch production. The reasonably priced universal machine has a swing diameter of 400mm (15.7").

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S131

The S131 is a CNC universal internal cylindrical grinding machine of the latest generation. The swing diameter above the workpiece table is 250 mm (9.8"), and the maximum workpiece length (including clamping device) is 300 mm (11.8").

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S141

The S141 is a CNC universal internal cylindrical grinding machine. Three sizes are available for workpiece lengths (including clamping devices) of 300mm (11.8"), 700mm (27.5") and 1300mm (51.2"). The maximum grinding length is 250mm (9.8") for internal and 150mm (5.9") for external diameters.

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S151

The S151 is a CNC universal internal cylindrical grinding machine. It is available in two sizes, for workpiece lengths (including clamping device) up to 700mm (27.5") or 1300mm (51.2"). The swing diameter above the workpiece table is 550mm (21.6").

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STUDER Internal Cylindrical Production Grinding Machines

S110

The S110 is a very flexible internal cylindrical grinding machine for machining medium-sized workpieces. The machine has a centre height of 102mm (4") and a grinding length of max. 120mm (4.7").

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S122

The S122 is a CNC production internal cylindrical grinding machine for small to medium-sized workpieces in small and large-scale production. The machine has a swing diameter of 220mm (8.6").

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STUDER Internal Cylindrical Radius Grinding Machines

S121 Radius

The S121 is a radius internal cylindrical grinding machine. It is the ideal machine for internal, face and external grinding of chuck components. The maximum swing diameter is 300mm (11.8") and the maximum workpiece weight is 100kg (220lbs).

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S131 Radius

The S131 is a radius internal cylindrical grinding machine that is especially suitable for grinding complex workpieces from very hard materials The maximum swing diameter is 300mm (11.7") and the maximum workpiece weight is 100kg (220lbs).

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S141 Radius

The S141 is a radius internal cylindrical grinding machine that is especially suitable for grinding complex workpieces from very hard materials The maximum swing diameter is 400mm (15.7") and the maximum workpiece weight is 100kg (220lbs).

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About STUDER

Fritz STUDER AG was formed in 1912 and manufactures grinding machines for internal and external cylindrical grinding for small and middle sized work pieces. Our strength lies in single, small and middle sized job lots mainly for the markets of machine tooling, electrics and electronics, tooling and job shops.