Camshaft Grinders. Highspeed, High Accuracy Cam Lobe Grinding Machines Between Centers: 13.8" (350 mm) to 78.7" (2,000 mm) Swing: Ø12.6" (320 mm) ... Manual Grinders. Manual Hydraulic OD Cylindrical Grinding Machines Between Centers: 19.7" (500 mm) to 59" (1,500 mm) Swing: Ø12.6" 320 mm