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| + Differential Roller Screws |
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Ballscrews
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Internal Recirculation |
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High Speed Line |
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FAQ
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Steinmeyer ballscrews are made of high quality steel to ensure best performance and durability. Purity, hardness, absence of stress and micro-fissures are most important. Steinmeyer uses steel suppliers, who must conform to very restricted conditions. Depending on the nominal diameter the screw is made of AISI 1050/ 1055 or AISI 52100. Nuts and balls are made of AISI 52100. Steel materials are vacuum-melted to reduce impurities, which inherently increases resistance to fatigue. |
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Ballraces are induction hardened, balls and nut are through hardened. Upon request, bearing journals will be hardened, too. Ballscrews up to 12 mm in diameter are hardened throughout. Hardnesses are:
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ballrace zone of screw: |
HRC 60 ± 2 (700 HV 10) |
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nut: |
HRC 62 ± 2 (740 HV 10) |
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balls: |
HRC 62 ± 2(770 HV 10) |
Special materials / vacuum use
For special applications, Steinmeyer ballscrews are also available in corrosion resistant steel. High temperatures (up to 300° C), as well as anti-magnetic properties, can be handled using copper-beryllium. For use in vacuum chambers, normal materials used may lead to outgassing. Special executions for such applications are available, please ask our engineering service