Page 3 of catalogue Ball screws of SKF Linearsysteme GmbH

General

Contents
Ø
Load Co

Recommendations for selection
Overview: ball screw Nuts --------------------------------------------------------------------------------------------------Basic dynamic load rating (Ca) --------------------------------------------------------------------------------------------Static load carrying capacity (Coa) ----------------------------------------------------------------------------------------Critical rotating speed for screw shafts ---------------------------------------------------------------------------------Permissible speed limit -----------------------------------------------------------------------------------------------------Lubrication ---------------------------------------------------------------------------------------------------------------------Efciency and back-driving ------------------------------------------------------------------------------------------------Axial play and preload -------------------------------------------------------------------------------------------------------Static axial stiffness of a complete assembly --------------------------------------------------------------------------Screw shaft buckling --------------------------------------------------------------------------------------------------------Manufacturing precision ----------------------------------------------------------------------------------------------------Materials and heat treatments ---------------------------------------------------------------------------------------------05 05 06 06 07 07 07 08 08 08 09 09

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Rolling element

d

Recommendations for assembly
Radial and moment loads ---------------------------------------------------------------------------------------------------Alignment ----------------------------------------------------------------------------------------------------------------------Lubrication ---------------------------------------------------------------------------------------------------------------------Designing the screw shaft ends ------------------------------------------------------------------------------------------Operating temperature -----------------------------------------------------------------------------------------------------Separating the nut from the screw shaft -------------------------------------------------------------------------------Starting-up the screw ------------------------------------------------------------------------------------------------------10 10 10 10 10 11 11

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Other technical data
Lead precision according to ISO -------------------------------------------------------------------------------------------- 12

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Product information
SD/BD miniature Screws ---------------------------------------------------------------------------------------------------SDS/BDS/SHS miniature screws in stainless steel ------------------------------------------------------------------SH miniature screws --------------------------------------------------------------------------------------------------------SX/BX universal screws -----------------------------------------------------------------------------------------------------Accessories for SX/BX nuts ------------------------------------------------------------------------------------------------SND/BND precision screws, DIN standard -----------------------------------------------------------------------------PND preloaded screws, DIN standard -----------------------------------------------------------------------------------SN/BN precision screws ----------------------------------------------------------------------------------------------------PN preloaded screws --------------------------------------------------------------------------------------------------------SL/BL long lead screws -----------------------------------------------------------------------------------------------------SLT/BLT rotating nuts -------------------------------------------------------------------------------------------------------Standard machined ends ---------------------------------------------------------------------------------------------------Screw shaft accessories ----------------------------------------------------------------------------------------------------Calculation formulas ---------------------------------------------------------------------------------------------------------Designation --------------------------------------------------------------------------------------------------------------------Roller screws and cylinders ------------------------------------------------------------------------------------------------14 16 18 20 22 24 26 28 30 32 34 36 40 46 49 50

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