Servomech BS Series Screws

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)

Ball screw nuts:

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

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