SKF - Spherical Plain Bearings and Rod Ends

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Location of rod ends................................................................................................................... 78 Sealing......................................................................................................................................... 79 Designing a bearing arrangement for easy mounting and dismounting................................. 82 Lubrication............................................................................................................. 84 The SKF traffic light concept....................................................................................................... 84 Spherical plain bearings requiring maintenance...................................................................... 86 Maintenance-free spherical plain bearings............................................................................... 88 Steel/PTFE sintered bronze and steel/PTFE fabric sliding contact surface combinations... 88 Steel/PTFE FRP sliding contact surface combination........................................................... 88 Rod ends requiring maintenance............................................................................................... 89 Maintenance-free rod ends........................................................................................................ 89 Relubrication........................................................................................................... 90 Mounting................................................................................................................ 92 Spherical plain bearings............................................................................................................. 92 Mechanical mounting.............................................................................................................. 92 Hot mounting.......................................................................................................................... 94 Rod ends...................................................................................................................................... 95 Dismounting........................................................................................................... 96 Spherical plain bearings............................................................................................................. 96 Rod ends...................................................................................................................................... 96 26
Selection of bearing type 1 Bearing terminology Fig. 1 To better understand frequently used plain bearing and rod end specific terms, definitions are provided in fig. 1 and fig. 2. Spherical plain bearing 1 Outer ring 2 Sliding contact surfaces 3 Seal 4 Inner ring 5 Lubrication hole 6 Lubrication groove 1 2 3 4 5 6 Rod end 1 Spherical plain bearing 2 Rod end 2a Rod end housing 2b Rod end shank, with an external (male) thread. Shanks are also available with an internal (female) thread or with a welding shank. 3 Grease fitting 1 Fig. 2 2a 3 2 2b 27
Page 1 and 2: SKF spherical plain bearings and ro
Page 3 and 4: Principles of selection and applica
Page 5 and 6: 6 Rod ends requiring maintenance...
Page 7 and 8: Foreword Many applications require
Page 9 and 10: Unit conversions Quantity Unit Conv
Page 11 and 12: Evolving by-wire technology SKF has
Page 13: Maintaining a 350 km/h R&D lab In a
Page 16 and 17: General product information Propert
Page 18 and 19: General product information Bearing
Page 20 and 21: General product information Mainten
Page 22 and 23: General product information Multi-p
Page 24 and 25: General product information Dam gat
Page 27: Principles for selection and applic
Page 31 and 32: Bearing design Radial spherical pla
Page 33 and 34: Bearing design Maintenance-free rad
Page 35 and 36: Angular contact spherical plain bea
Page 37 and 38: Bearing design Rod ends with a thre
Page 39 and 40: Maintenance-free rod ends with a th
Page 41 and 42: static load factor K 0 († table 4
Page 43 and 44: Combined load Fig. 6 Load When cons
Page 45 and 46: Angular contact spherical plain bea
Page 47 and 48: Requisite bearing size To determine
Page 49 and 50: For intermittent movement, the angl
Page 51 and 52: Diagram 8 pv diagrams for steel/PTF
Page 53 and 54: Basic rating life calculation Steel
Page 55 and 56: Diagram 14 Multiplication factor f
Page 57 and 58: Diagram 16 Temperature factor b 2 f
Page 59 and 60: Table 7 Load condition factor b 1 f
Page 61 and 62: Maintenance-free steel/PTFE FRP sli
Page 63 and 64: Variable load and sliding velocity
Page 65 and 66: Because this life is shorter than t
Page 67 and 68: 3. A 320-bar hydraulic cylinder on
Page 69 and 70: 4. Linkages of a conveyor installat
Page 71 and 72: Friction 1 The friction in a spheri
Page 73 and 74: For heavier loads a tighter interfe
Page 75 and 76: Shaft fits Operating conditions Tol
Page 77 and 78: Axial location of bearings Locating
Page 79 and 80:
Shaft and housing fillet dimensions
Page 81 and 82:
Sealing Most bearing arrangements m
Page 83 and 84:
Table 7 External seals for spherica
Page 85 and 86:
Table 8 Recommended dimensions for
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Diagram 1 The SKF traffic light con
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SKF recommends using SKF LGHB 2 gre
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Rod ends requiring maintenance Stee
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1 SKF has the appropriate greases f
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Plane of fracture or split and main
Page 97 and 98:
Rod ends Rod ends are fitted on pin
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Fig. 3 Dismounting a bearing using
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Radial spherical plain bearings req
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Radial spherical plain bearings req
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Radial spherical plain bearings, st
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Radial spherical plain bearings wit
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Maintenance-free radial spherical p
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Table 1 Dimensional tolerances for
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Table 3 Design of maintenance-free
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Table 6 Radial internal clearance f
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r a D a d a 3.1 Dimensions Abutment
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r a D a d a 3.2 GEH .. TX(G3)E-2LS
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r a d a 3.2 Dimensions Abutment and
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145 r a D a d a 3.4 Dimensions Abut
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147 r a D a d a 3.4 Dimensions Abut
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Angular contact spherical plain bea
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Angular contact spherical plain bea
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Maintenance-free angular contact sp
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Thrust spherical plain bearings Dim
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Materials Shaft and housing washers
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163 5
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d a r a r a D a Dimensions Abutment
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Rod ends requiring maintenance SKF
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Rod ends requiring maintenance Perm
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Rod ends with a female thread, stee
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Rod ends with a female thread, for
Page 178 and 179:
Rod ends with a female thread, for
Page 180 and 181:
Rod ends with a male thread, steel/
Page 182 and 183:
Rod ends with a cylindrical section
Page 184 and 185:
Rod ends with a rectangular section
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Rod ends with a female thread, stee
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Rod ends with a male thread, steel/
Page 191 and 192:
Maintenance-free rod ends Dimension
Page 193 and 194:
Tolerances SKF rod end inner ring d
Page 195 and 196:
193 7
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Dimensions d d k d 4 l 3 l 4 l 5 l
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Dimensions d d k l 1 l 2 l 7 r 1 mi
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Dimensions d d k d 4 l 3 l 4 l 5 l
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Dimensions d d k l 1 l 2 l 7 r 1 mi
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Dimensions d d k d 3 d 4 l 3 l 4 l
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Dimensions d d k l 1 l 2 r 1 min ma
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Other SKF plain bearings and specia
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Other SKF plain bearings and specia
Page 215 and 216:
Product index Designation Product P
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SKF - Spherical Plain Bearings and Rod Ends

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