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BS EN 13001-3-4:2018 Cranes. General design - Limit states and proof of competence of machinery. Bearings, 2019
- undefined
- 1 Scope
- 2 Normative references
- 3 Terms and definitions, symbols and abbreviations [Go to Page]
- 3.1 Terms and definitions
- 3.2 Symbols and abbreviations
- 4 General [Go to Page]
- 4.1 Documentation
- 4.2 Materials [Go to Page]
- 4.2.1 Grades and qualities for slewing rings [Go to Page]
- 4.2.1.1 Grades
- 4.2.1.2 Inclusions
- 4.2.1.3 Impact toughness
- 4.2.2 Grades and qualities for rolling bearings, except slewing rings [Go to Page]
- 4.2.2.1 Grades
- 4.2.2.2 Inclusions
- 4.2.3 Materials for plain bearings
- 4.3 Bearings [Go to Page]
- 4.3.1 General
- 4.3.2 Slewing rings [Go to Page]
- 4.3.2.1 General
- 4.3.2.2 Supporting structure
- 4.3.2.3 Hardness
- 4.3.2.4 Retaining bolts
- 4.3.2.5 Lubrication
- 4.3.3 Rolling bearings [Go to Page]
- 4.3.3.1 General
- 4.3.3.2 Housings
- 4.3.3.3 Hardness
- 4.3.3.4 Lubrication
- 4.3.4 Plain bearings [Go to Page]
- 4.3.4.1 General
- 4.3.4.2 Sealing
- 4.3.4.3 Lubrication
- 4.3.4.4 Shafts for cylindrical plain bearings
- 4.3.4.5 Shafts for spherical plain bearings
- 4.4 Proofs of competence for bearings
- 5 Proof of static strength [Go to Page]
- 5.1 General
- 5.2 Limit design stresses and forces [Go to Page]
- 5.2.1 General
- 5.2.2 Limit design forces and stresses for slewing rings [Go to Page]
- 5.2.2.1 General
- 5.2.2.2 Static equivalent loads for raceways and rolling elements
- 5.2.2.3 Limit design static load ratings C0a,Rd and C0r,Rd for slewing rings
- 5.2.2.4 Fixing elements (bolts)
- 5.2.3 Execution of the proof for slewing rings [Go to Page]
- 5.2.3.1 Raceways and rolling elements
- 5.2.3.2 Fixing elements
- 5.2.4 Limit design forces and stresses for rolling bearings [Go to Page]
- 5.2.4.1 General
- 5.2.4.2 Static equivalent loads for rolling bearings
- 5.2.4.3 Limit design static load ratings C0a,Rd and C0r,Rd for rolling bearings
- 5.2.5 Execution of the proof for rolling bearings [Go to Page]
- 5.2.5.1 Ball bearings
- 5.2.5.2 Roller bearings
- 5.2.6 Limit design forces and stresses for plain bearings [Go to Page]
- 5.2.6.1 Cylindrical plain bearings
- 5.2.6.2 Spherical plain bearings
- 5.2.7 Execution of the proof for plain bearings [Go to Page]
- 5.2.7.1 Cylindrical plain bearings
- 5.2.7.2 Spherical plain bearings
- 6 Proof of endurance and fatigue strength [Go to Page]
- 6.1 General
- 6.2 Slewing rings [Go to Page]
- 6.2.1 Design dynamic loads and load ratings [Go to Page]
- 6.2.1.1 Raceways and rolling elements: general
- 6.2.1.2 Raceways and rolling elements: design dynamic equivalent loads Pa,i and Pr,i
- 6.2.1.3 Total number of revolutions Utot,Sr and relative number of revolutions νsr
- 6.2.1.4 Basic dynamic axial load rating Ca and basic dynamic radial load rating Cr
- 6.2.1.5 Dynamic load spectrum factors ksr and ksr,r
- 6.2.1.6 Slewing ring raceway load history parameter ssr
- 6.2.1.7 Minimum slewing ring fatigue strength specific resistance factor γsrf
- 6.2.1.8 Limit design dynamic loads Ca,Rd and Cr,Rd
- 6.2.2 Fatigue strength of the fixing elements [Go to Page]
- 6.2.2.1 Design stress range ΔσSd
- 6.2.2.2 Characteristic fatigue strength Δσc
- 6.2.3 Execution of the proof for slewing rings [Go to Page]
- 6.2.3.1 Raceways and rolling elements
- 6.2.3.2 Fixing elements
- 6.3 Rolling bearings [Go to Page]
- 6.3.1 Design dynamic loads and load ratings [Go to Page]
- 6.3.1.1 General
- 6.3.1.2 Design dynamic equivalent loads Pa,Sd,i and Pr,Sd,i
- 6.3.1.3 Total number of revolutions Utot,rb and relative total number of revolutions νrb for rolling bearing
- 6.3.1.4 Basic dynamic axial load rating Ca and basic dynamic radial load rating Cr
- 6.3.1.5 Rolling bearing dynamic load spectrum factor krb
- 6.3.1.6 Rolling bearing load history parameter srb
- 6.3.1.7 Minimum rolling bearing resistance factor γrbf
- 6.3.1.8 Limit design dynamic loads Ca,Rd and Cr,Rd
- 6.3.2 Execution of the proof for rolling bearings [Go to Page]
- 6.3.2.1 General
- 6.3.2.2 Thrust ball bearings and thrust roller bearings
- 6.3.2.3 Radial ball bearings and radial roller bearings
- 6.4 Plain bearings [Go to Page]
- 6.4.1 General
- 6.4.2 Cylindrical plain bearings [Go to Page]
- 6.4.2.1 Design dynamic pressure of plain bearing
- 6.4.2.2 Limit design dynamic pressure pL of plain bearing
- 6.4.2.3 Design effective sliding speed νeff
- 6.4.2.4 Limit design effective sliding speed νL
- 6.4.2.5 Limit effective transmitted power density (p·ν)L of cylindrical plain bearings
- 6.4.3 Spherical plain bearings [Go to Page]
- 6.4.3.1 Design dynamic load
- 6.4.3.2 Limit design dynamic pressure pspb,L of spherical plain bearing
- 6.4.3.3 Design effective sliding speed vspb,eff of spherical plain bearing
- 6.4.3.4 Limit design effective sliding speed vspb,L of spherical plain bearings
- 6.4.3.5 Limit design transmitted power densities (p·v)spb,L of spherical plain bearings
- 6.4.4 Execution of the proof of endurance for plain bearings [Go to Page]
- 6.4.4.1 Cylindrical plain bearings
- 6.4.4.2 Spherical plain bearings
- 6.4.5 Plain bearing design life
- 7 Proof of elastic stability
- Annex A (informative)Calculation factors and guide load ratings of slewing rings [Go to Page]
- A.1 Excess load factor Krep [Go to Page]
- A.1.1 General
- A.1.2 Analytical method of determining Krep
- A.2 Influence factors [Go to Page]
- A.2.1 Proof of static strength [Go to Page]
- A.2.1.1 Factor for shear in sub-hardened layer f1
- A.2.1.2 Factor for surface hardness f3
- A.2.2 Proof of fatigue strength: factor f′f1 for sub-hardened layer
- A.2.3 Proof of fatigue strength: Inclusion factor f′f2
- A.2.4 Proof of fatigue strength: Surface hardness factor f′f3
- A.3 Guidelines for various load ratings [Go to Page]
- A.3.1 General
- A.3.2 Guide value of limit design static axial load rating C0aRd for slewing rings with ball bearings
- A.3.3 Guide value of limit design static load ratings C0a,Rd and C0r,Rd for slewing rings with roller bearing [Go to Page]
- A.3.3.1 Limit design static axial load rating C0a,Rd
- A.3.3.2 Limit design static radial load rating C0r,Rd (three-row roller bearing)
- A.3.4 Basic dynamic axial load rating Ca of a slewing ring with ball bearings [Go to Page]
- A.3.4.1 Single-row with 4 contact points and double-row with 2 point contacts
- A.3.4.2 Double-row with 4 contact points
- A.3.5 Basic dynamic load ratings Ca and Cr of a slewing ring with roller bearings [Go to Page]
- A.3.5.1 Basic dynamic axial load rating Ca
- A.3.5.2 Basic dynamic radial load rating Cr (three-row roller bearing)
- A.4 Fixing elements: alternative calculation of the design stress σSd [Go to Page]
- A.4.1 Bolt prying moment Mfb
- A.4.2 Normal design stress σSd
- A.4.3 Calculation of the lever arm sa
- Annex B (informative)Proof of fatigue strength of slewing ring raceway: calculation of load history parameter ssr (example) [Go to Page]
- B.1 General
- B.2 Working cycles [Go to Page]
- B.2.1 Type of crane
- B.2.2 Description of the sequence of movements
- B.3 Description of the slewing ring [Go to Page]
- B.3.1 Type of slewing ring
- B.3.2 Main data
- B.4 Proof of fatigue strength [Go to Page]
- B.4.1 Load combinations
- B.4.2 Dynamic axial equivalent loads Pa,i for supporting/retaining raceways
- B.4.3 Dynamic radial equivalent loads Pr,i for radial raceway
- B.4.4 Classification of the raceways [Go to Page]
- B.4.4.1 Supporting raceway
- B.4.4.2 Retaining raceway
- B.4.4.3 Radial raceway
- Annex C (informative)Equivalence of proofs of fatigue strength of slewing rings and rolling bearings according to EN 13001 method and ISO 281's one
- Annex D (informative)Selection of a suitable set of crane standards for a given application
- Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC [Go to Page]
