Ball bearing nut SFN Series

steelalloythreaded

All Servomech ball screws and nuts are designed and produced inside our factory in Anzola dell’Emilia (Bologna), ITALY. BS Series ball screws: Available on different accuracy grade (ISO IT3, IT5, IT7) Nominal diameter d0 [mm], in accordance with standards ISO 3408 and DIN 69051: 14, 16, 20, 25, 32, 40, 50, 63, 80, 100, 120 Lead Ph [mm], in accordance with standards ISO 3408 and DIN 69051: 4, 5, 6, 8, 10, 12, 15, 16, 20,25, 32, 40 Max. thread length up to 10 m (depending on the diameters and the length of the bar) SFN Series single ball nuts with flange: Available with zero backlash or preloaded Different dimensions available (DIN 69051, customer’s specs or SERVOMECH design) Materials: Threaded shafts: alloy steel 42CrMo4 or 50CrMo4 (UNI EN 10083-1), quenched Hardness of ball tracks within the range (58 … 61) HRc Ball nuts: alloy steel 18 NiCrMo5 (UNI EN 10084), case-hardened Hardness of surfaces in contact within the range (58 … 61) HRc Ball recirculating elements: alloy steel, case-hardened, with a surface hardness (50 … 55) HRc or plastic material depending on the application requirements Working temperature: (-20 … +110)°C Using special materials, it is possible to achieve temperature up to 500° C