The Studer CT550 from United Grinding is a compact machine designed for medium-sized workpieces composed of hard materials such as tool steel, carbide, ceramics and glass. The CNC internal/universal cylindrical grinder is said to offer greater precision, improved surface quality, higher metal-removal rates and shorter cycle times. It is suitable for applications including die plates, spring collets, toolholding fixtures, hydraulic components and thread-ring gages.
A modular, flexible arrangement of three inline grinding spindles enables optimized dimensioning of the machine, ranging from the manufacture of individual parts to large-scale production. The Granitan S103 machine bed provides a solid, rigid and thermally stable basis for absorbing high forces during grinding. The machine bed equalizes brief variations in temperature with consistently high precision even in changing ambient temperatures, the company says.
The diameter of the high-frequency spindle ranges from 80 to 120 mm. The belt-driven spindle diameter is 80 mm, and the external grinding wheel is 305 mm. X- and Z-axis travels measure 520 × 250 mm, respectively. The manual B-axis setting angle is ±1 degree. The maximum workhead speed is 1,200 rpm and the maximum part length is 650 mm, with a grinding length of 150 mm. A FANUC 310i-A control is standard.