GB/T 21559.2:2023 Rolling bearings - Linear motion rolling bearings - Part 2: Static load ratings
Rolling bearings - Linear motion rolling bearings - Part 2: Static load ratings
1 Scope
This document specifies methods of calculating the basic static load rating, static equivalent load and static safety factor for linear motion rolling bearings.
This document is applicable to linear motion rolling bearings manufactured from contemporary, commonly used, high quality, hardened bearing steel in accordance with good manufacturing practice and basically of conventional design with regard to the shape of the rolling contact surfaces.
This document is not applicable to designs where the rolling elements operate directly on the slide surface of the machine equipment, unless that surface is equivalent in all respects to the raceway of the linear motion rolling bearing component it replaces.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 76 Rolling bearings - Static load ratings
Note: GB/T 4662-2012 Rolling bearings - Static load ratings (ISO 76:2006, IDT)
ISO 5593 Rolling bearings- Vocabulary
Note: GB/T 6930-2002 Rolling bearings - Vocabulary (ISO 5593:1997, IDT)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 76 and ISO 5593 as well as the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
——ISO Online browsing platform: available at https://www.iso.org/obp;
——IEC Electropedia: available at http://www.electropedia.org/.
3.1
recirculating linear ball bearing, sleeve type, with or without raceway grooves
basically cylindrical sleeve provided with a number of closed loops of recirculating balls designed to achieve linear rolling motion along a hardened cylindrical shaft
Note 1: See Figure 1.
Note 2: The raceways in the sleeve can be designed cylindrical as well as steel inserts with raceway grooves parallel to the axis.
Figure 1 Recirculating linear ball bearing, sleeve type
3.2
recirculating linear ball (or roller) bearing, linear guideway, carriage type
linear ball (or roller) bearing provided with a number of symmetrically arranged, closed loops of recirculating balls (or rollers) designed to achieve linear rolling motion along a hardened guideway furnished with adequate raceways
Note: See Figure 2.
Figure 2 Recirculating linear ball (or roller) bearing, linear guideway, carriage type
3.3
non-recirculating linear ball bearing, linear guideway, deep groove type
linear bearing with balls as rolling elements, each ball having two points of contact
Note 1: See Figure 3.
recirculating linear ball bearing, sleeve type, with or without raceway grooves
basically cylindrical sleeve provided with a number of closed loops of recirculating balls designed to achieve linear rolling motion along a hardened cylindrical shaft
Note 1: See Figure 1.
Note 2: The raceways in the sleeve can be designed cylindrical as well as steel inserts with raceway grooves parallel to the axis.
Figure 1 Recirculating linear ball bearing, sleeve type
3.2
recirculating linear ball (or roller) bearing, linear guideway, carriage type
linear ball (or roller) bearing provided with a number of symmetrically arranged, closed loops of recirculating balls (or rollers) designed to achieve linear rolling motion along a hardened guideway furnished with adequate raceways
Foreword I
Introduction II
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Basic static load ratings
6 Static equivalent load
7 Static load safety factor
Bibliography
Standard
GB/T 21559.2-2023 Rolling bearings—Linear motion rolling bearings—Part 2: Static load ratings (English Version)
Standard No.
GB/T 21559.2-2023
Status
valid
Language
English
File Format
PDF
Word Count
8500 words
Price(USD)
255.0
Implemented on
2023-12-1
Delivery
via email in 1 business day
Detail of GB/T 21559.2-2023
Standard No.
GB/T 21559.2-2023
English Name
Rolling bearings—Linear motion rolling bearings—Part 2: Static load ratings
GB/T 21559.2:2023 Rolling bearings - Linear motion rolling bearings - Part 2: Static load ratings
Rolling bearings - Linear motion rolling bearings - Part 2: Static load ratings
1 Scope
This document specifies methods of calculating the basic static load rating, static equivalent load and static safety factor for linear motion rolling bearings.
This document is applicable to linear motion rolling bearings manufactured from contemporary, commonly used, high quality, hardened bearing steel in accordance with good manufacturing practice and basically of conventional design with regard to the shape of the rolling contact surfaces.
This document is not applicable to designs where the rolling elements operate directly on the slide surface of the machine equipment, unless that surface is equivalent in all respects to the raceway of the linear motion rolling bearing component it replaces.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 76 Rolling bearings - Static load ratings
Note: GB/T 4662-2012 Rolling bearings - Static load ratings (ISO 76:2006, IDT)
ISO 5593 Rolling bearings- Vocabulary
Note: GB/T 6930-2002 Rolling bearings - Vocabulary (ISO 5593:1997, IDT)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 76 and ISO 5593 as well as the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
——ISO Online browsing platform: available at https://www.iso.org/obp;
——IEC Electropedia: available at http://www.electropedia.org/.
3.1
recirculating linear ball bearing, sleeve type, with or without raceway grooves
basically cylindrical sleeve provided with a number of closed loops of recirculating balls designed to achieve linear rolling motion along a hardened cylindrical shaft
Note 1: See Figure 1.
Note 2: The raceways in the sleeve can be designed cylindrical as well as steel inserts with raceway grooves parallel to the axis.
Figure 1 Recirculating linear ball bearing, sleeve type
3.2
recirculating linear ball (or roller) bearing, linear guideway, carriage type
linear ball (or roller) bearing provided with a number of symmetrically arranged, closed loops of recirculating balls (or rollers) designed to achieve linear rolling motion along a hardened guideway furnished with adequate raceways
Note: See Figure 2.
Figure 2 Recirculating linear ball (or roller) bearing, linear guideway, carriage type
3.3
non-recirculating linear ball bearing, linear guideway, deep groove type
linear bearing with balls as rolling elements, each ball having two points of contact
Note 1: See Figure 3.
recirculating linear ball bearing, sleeve type, with or without raceway grooves
basically cylindrical sleeve provided with a number of closed loops of recirculating balls designed to achieve linear rolling motion along a hardened cylindrical shaft
Note 1: See Figure 1.
Note 2: The raceways in the sleeve can be designed cylindrical as well as steel inserts with raceway grooves parallel to the axis.
Figure 1 Recirculating linear ball bearing, sleeve type
3.2
recirculating linear ball (or roller) bearing, linear guideway, carriage type
linear ball (or roller) bearing provided with a number of symmetrically arranged, closed loops of recirculating balls (or rollers) designed to achieve linear rolling motion along a hardened guideway furnished with adequate raceways
Contents of GB/T 21559.2-2023
Foreword I
Introduction II
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Basic static load ratings
6 Static equivalent load
7 Static load safety factor
Bibliography