Heavy Duty Ball Screws (UltraThrust)
UltraThrust ball screws from Steinmeyer are not merely larger sizes of conventional ball screws. They have been specifically designed for the purpose of transmitting very high loads. The ball returns for example have been optimized for large ball sizes and for the specific use of such large screws. Also the robust nut body and the flange differ from conventional designs. Material selection and heat treatment take into account the special application requirements.
Please keep in mind that the extremely high static capacities of such screws are a result of the high dynamic load capacities desired. They are not to be mistaken as operating loads. Maximum permissible loads are defined under the following link.Fracture Load
These ball screws are usually assembled either without any or with low preload.