It also establishes the basic dynamic torque rating and the basic static torque rating for these ball splines.

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 23848-2 : 2009 Machine tools – Ball splines – Part 2 : Dynamic and static load ratings and rating life (IDT)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.

NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 3408-1: 2006 Ball screws-Part 1: Vocabulary and designation

ISO 3408-2: 1991 Ball screws-Part 2: Nominal diameters and nominal leads-Metric series

ISO 3408-3: 2006 Ball screws-Part 3: Acceptance conditions and acceptance tests (overall evaluation: MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.

This Standard is applicable under the following preconditions:

— elastic deformation of ball and ball track;

— ball track has a minimum hardness of HRC 58;

— conformity frs > 0.5 and fm > 0.5;

— the quality of steel of which the ball screw is made is equivalent to that of ball bearing steel or similar steel alloys;

— lubrication recommended by ball screw suppliers is always provided.

NOTE 1 The calculations in this Standard have been based primarily on the following publications:

Prof. G. Lundberg, A. Palmgren.

Acta Politechnica, mech.

Eng. series Vol.I, No.3, Stockholm, Sweden.

Part 7, 1947

NOTE 2 The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 3408-5: 2006 Ball screws-Part 5: Static and dynamic axial load ratings and operational life (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 3408-3 :2006 Ball screws-Part 3: Acceptance conditions and acceptance tests (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 3408-4:2006 Ball screws-Part 4: Static axial rigidity (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 3408-2: 1991 Ball screws-Part 2: Nominal diameters and nominal leads-Metric series (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.

NOTE The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 3408-1 :2006 Ball screws-Part 1: Vocabulary and designation (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.