Specifications:
The document outlines the specifications for linear shafts used in ballscrew manufacturing, made from 42CrMo4 Q+T steel (W.NR. 1.7225). The shafts are available in various diameters ranging from 18 mm to 63 mm, with corresponding weights from 2 Kg/m to 24.45 Kg/m. The length of the shafts can be either 6100 mm or 6300 mm, with some larger diameters extending up to 8500 mm.

Mechanical Properties:
The shafts are hot rolled and quenched and tempered (Q+T) according to EN 10269: 2001 standards. They have a tensile strength (R) of 860 to 1060 N/mm², a yield strength (Rp 0.2) of at least 730 N/mm², and an elongation (A%) of at least 14%. The hardness is specified between 258 and 322 HB.

Chemical Composition:
The chemical analysis specifies the following composition: Carbon (C) 0.38 - 0.45%, Silicon (Si) max 0.4%, Manganese (Mn) 0.60 - 0.90%, Phosphorus (P) max 0.035%, Sulfur (S) max 0.035%, Chromium (Cr) 0.90 - 1.20%, and Molybdenum (Mo) 0.15 - 0.30%.

Surface and Dimensional Tolerances:
The shafts have a surface hardness on demand, with a depth of 0.2 mm. Straightness is maintained at 2 mm/m, roundness at a maximum of 3 μ, and conicity at a maximum of 3 μ. The surface finish is specified between 0.20 and 0.25 μ RA.

Contact Information:
HS Industries s.r.l. is located at Via Francesca Vecchia snc, 24040 Pontirolo Nuovo (BG), Italy. They can be contacted via phone at +39 0363 88 856 or +39 0363 88 817, fax at +39 0363 33 01 02, or email at [email protected]. More information is available on their website www.hs-industries.com.