Slewing rings Schaeffler Technologies AG & Co. KG - Industrial ...

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n min –1 Operating speed of slewing ring n osc min –1 Frequency of to and fro movement p – Life exponent P kN Equivalent dynamic bearing load P axial kN Equivalent dynamic axial bearing load P radial kN Equivalent dynamic radial bearing load Q spec kN/mm Specific load W R kN/m Special frictional force due to seals, cages, etc. x – Profile displacement factor z – Number of teeth A – Screw tightening factor 0 ° Transverse pressure angle of gear teeth ° Half of swivel angle B mm Maximum permissible flatness deviation W mm Maximum permissible perpendicularity deviation Stilt mm Maximum permissible increase in tilting clearance – Load eccentricity parameter – Frictional resistance factor 11 INDUSTRIAL TECHNOLOGIES +38 044 4982194 www.ind-techno.com.ua
Load carrying capacity and life Static load carrying capacity The size of the slewing ring required is dependent on the demands made on its: ■ static and dynamic load carrying capacity (Dynamic load carrying capacity see page 16) ■ life (see Dynamic load carrying capacity and life, page16) ■ operational reliability. Definition of static load carrying capacity Slewing rings that undergo rotary motion only infrequently, undergo slow swivel motion, rotate only slowly or are subjected to load while stationary are dimensioned on the basis of their static load carrying capacity since the permissible load in these cases is determined not by material fatigue but by the loadinduced deformations at the contact points between the rolling elements and raceways. The static load carrying capacity is described by: ■ the basic static load ratings C 0 (see dimension tables) ■ the static limiting load diagrams Raceway and Fixing screws (see dimension tables and calculation example, page 15). The size of a statically loaded slewing ring for a particular application can therefore be checked in approximate terms using the basic static load ratings C 0 and the static limiting load diagrams Raceway. Checking the static load carrying capacity The static load carrying capacity can be checked in approximate terms only when: ■ the load arrangement is in accordance with Figure 3 (page 15) ■ all the requirements stated in this publication are fulfilled in relation to – flange rings and location – fitting, lubrication and sealing. Where load arrangements are more complex or the conditions are not fulfilled, please consult INA. In order to check the static load carrying capacity, the following equivalent static operating values must be determined: ■ the equivalent static bearing load F 0q ■ the equivalent static tilting moment load M 0q . Checking is possible for applications with or without radial load. Determining the equivalent static bearing load without radial load and checking the static load carrying capacity in the static limiting load diagram Raceway If only axial and tilting moment loads are present, the following apply: F 0q F 0a ⋅ f A ⋅ f S M 0q M 0k ⋅ f A ⋅ f S F 0q kN Equivalent static axial bearing load F 0a kN Static axial bearing load f A – Application factor (see Table 1, page 14) f S – Factor for additional safety M 0q kNm Equivalent static tilting moment load M 0k kNm Static tilting moment load. ■ Using the values for F 0q and M 0q , determine the load point in the static limiting load diagram Raceway. The load point must be below the raceway curve. In addition to the raceway, check the dimensioning of the fixing screws as well (see Calculation example, page 15 and Fixing screws, page 20). 12 INDUSTRIAL TECHNOLOGIES +38 044 4982194 www.ind-techno.com.ua
Page 1 and 2: Slewing rings Catalogue 404 INDUSTR
Page 3 and 4: Product range Overview/selection sc
Page 5 and 6: Contents Page Product range 2 Overv
Page 7 and 8: Product index sorted alphanumerical
Page 9 and 10: Ordering designation The ordering d
Page 11: Symbols and units Unless stated oth
Page 15 and 16: Load carrying capacity and life App
Page 17 and 18: Load carrying capacity and life Dyn
Page 19 and 20: Load carrying capacity and life Inf
Page 21 and 22: Fixing screws Static and dynamic lo
Page 23 and 24: Rotational resistance The rotationa
Page 25 and 26: Gear teeth INA slewing rings are av
Page 27 and 28: Lubrication Correct lubrication and
Page 29 and 30: Lubrication Grease lubrication Beha
Page 31 and 32: Lubrication Grease lubrication Init
Page 33 and 34: Lubrication Grease lubrication Lubr
Page 35 and 36: Sealing of the bearing arrangement
Page 37 and 38: Design of bearing arrangements INA
Page 39 and 40: Design of bearing arrangements Perm
Page 41 and 42: Fitting Storage and storage life of
Page 43 and 44: Fitting Preparations for fitting Pr
Page 45 and 46: Fitting Fitting of slewing rings Ch
Page 47 and 48: Fitting Tightening torques and fitt
Page 49 and 50: Four point contact bearings with ex
Page 51 and 52: Four point contact bearings with ex
Page 53 and 54: Four point contact bearings Light s
Page 59 and 60: Four point contact bearings Standar
Page 61 and 62: Four point contact bearings Standar
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Four point contact bearings Standar
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Four point contact bearings externa
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Four point contact bearings interna
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Four point contact bearings without
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Four point contact bearings without
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Crossed roller bearings with extern
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Crossed roller bearings with extern
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Crossed roller bearings Standard se
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Crossed roller bearings external ge
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Crossed roller bearings without gea
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Crossed roller bearings without gea
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Application examples 94 INDUSTRIAL
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Tandem roller Self-aligning articul
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Other products Crossed roller beari
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Crossed roller bearings for high pr
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102 INDUSTRIAL TECHNOLOGIES +38 044
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The bearing to be offered ❑ must
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Each section in Catalogue 404 begin
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Catalogue 404 · Slewing rings INDU
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