SKF - Spherical Plain Bearings and Rod Ends

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Selection of bearing types Bearing design Rod ends with a threaded shank, requiring maintenance Designation/ bore diameter range Characteristics Sliding contact surface combination: Steel/bronze Lower load carrying capacity compared to steel/steel rod ends, but more suitable for applications where lubricant starvation might occur SI(L)KAC .. M d = 5 – 30 mm SA(L)KAC .. M d = 5 – 30 mm With an open bearing (without seals), available with a right-hand or left-hand thread Sizes 6 and larger can be lubricated via the relubrication facility in the rod end shank or housing SIKAC .. M SAKAC .. M Rod ends with a welding shank, requiring maintenance See chapter 6 starting on page 167 Bearing design Rod ends with a welding shank, requiring maintenance Designation/ bore diameter range Characteristics Sliding contact surface combination: Steel/steel Suitable for heavy static or alternating loads, shock loads SC ..ES d = 20 – 80 mm With an open bearing (without seals), can be lubricated via a the relubrication facility in the rod end housing and via the pin (shaft) Primarily used for welding to piston rods and the bases of hydraulic cylinders Centred by a dowel pin SCF ..ES d = 20 – 120 mm With an open bearing (without seals); can be lubricated via the the relubrication facility in the rod end housing and via the pin (shaft); high capacity design rod end compared to SC .. ES series, to enable heavier static loads Rectangular welding shank without a dowel pin 36
Maintenance-free rod ends with a threaded shank See chapter 7 starting on page 189 Bearing design Maintenance-free rod ends with a threaded shank Designation/ bore diameter range Characteristics 1 Sliding contact surface combination: Steel/PTFE sintered bronze Suitable for heavy, constant direction loads, where low coefficient of friction is required; limited suitability for alternating loads, shock loads SI(L) .. C d = 6 – 30 mm SA(L) .. C d = 6 – 30 mm With an open bearing (without seals), available with a right-hand or left-hand thread SI .. C SA .. C Sliding contact surface combination: Steel/PTFE fabric Suitable for very heavy, constant direction loads, where low coefficient of friction is required; limited suitability for alternating loads, shock loads SI(L) .. TXE-2LS d = 35 – 80 mm SA(L) .. TXE-2LS d = 35 – 80 mm SI(L)A .. TXE-2LS d = 40 – 60 mm SA(L)A .. TXE-2LS d = 40 – 60 mm With a high performance bearing with a triple-lip heavy-duty seal on both sides of the bearing, available with a right-hand or lefthand thread SIA and SAA series with different fitting dimensions (thread, height of the housing) SI(A) .. TXE-2LS SA(A) .. TXE-2LS Sliding contact surface combination: Steel/PTFE FRP Suitable for heavy, constant direction loads, where low coefficient of friction is required; limited suitability for alternating loads, shock loads SI(L)KB .. F d = 5 – 22 mm SA(L)KB .. F d = 5 – 22 mm With an open bearing (without seals), but relatively insensitive to contaminants, available with a right-hand or left-hand thread SIKB .. F SAKB .. F 37
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 and 28: Principles for selection and applic
Page 29 and 30: Selection of bearing type 1 Bearing
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: Bearing design Rod ends with a thre
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
Page 87 and 88: 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
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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
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Rod ends with a female thread, for
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Rod ends with a male thread, steel/
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Rod ends with a cylindrical section
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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/
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Maintenance-free rod ends Dimension
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Tolerances SKF rod end inner ring d
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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
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Product index Designation Product P
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SKF - Spherical Plain Bearings and Rod Ends

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