The Design of Rolling Bearing Mountings
The Design of Rolling Bearing Mountings The Design of Rolling Bearing Mountings
Floating bearingLocating bearing70: Calender thermo roll bearings99 FAG
71 Anti-deflection rollsAnti-deflection rolls are found in both the press sectionand in calenders. They provide for an even paperthickness across the web and a consistently high paperquality. The drive is at the locating bearing end. Itspower is transmitted via gearing and the hypoid teethcoupling to the roll shell.The adjustment roll is pressed against the mating roll(calender roll) under very high pressure. As a result themating roll is bent and the form of the roll shellchanged. The shell of the adjustment roll must adjustto this form.The anti-deflection roll consists of a stationary axleand a rotating roll shell. Control elements which canbe pressure-balanced separately are provided on theaxle. They support the roll shell hydrostatically andeffect its adjustment. The roll shell is shaped like thebent mating roll by the changing pressure giving thepaper an even thickness.Operating dataRoll length 9,300 mm; roll diameter 1,025 mm; rollweight 610 kN; shell weight 210 kN; pressure 700 kN;circumferential velocity 1,500 m/min (n = 470 min –1 );bearing temperature 55 °C.Bearing selection, dimensioningA service life of > 100,000 h is required. The bearingonly has a guidance function when in operation (withpressure and closed gap).Spherical roller bearings FAG 23096MB.T52BW(dynamic load rating C = 3,800 kN) are used.Floating bearingDue to the danger of slippage bearings of the series239 with a low load rating should be selected.The bearings are produced with a reduced radial runout(specification T52BW), since running inaccuracyof the rotating roll shell influences the quality of thepaper web.Machine tolerancesBearing seats on the axle according to f6 due to pointload for the inner rings.The outer rings have circumferential load and a tight fit;the bearing seats in the housings are machined to P6.LubricationWhen dynamic misalignment and/or slippage mayoccur, a very good lubrication system must always providea load-carrying lubricating film. The bearings aresupplied with the lubricating oil used for the hydraulicsystem (ISO VG 150 with EP additives). The oil is fedlaterally to the bearings via holes. In new designs andparticularly with heated rolls, the lubricating oil is fedvia lubricating holes in the inner ring directly to thebearing contact areas.The deep groove ball bearings of the transmission arrangedat the locating bearing side are supplied with oilvia a separate oil circuit.SealingThe bearings are sealed externally with a shaft seal. Tothe roll side a baffle plate provides for an oil reservoirin the bearing area.Locating bearing71: Anti-deflection roll bearingsFAG 100
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- Page 52 and 53: 33 Manual gearbox for trucksOperati
- Page 54: 34 Final drive of a passenger carOp
- Page 57 and 58: Driven and non-steered rear wheel36
- Page 59 and 60: 38 Steering king pin of a truckA va
- Page 61 and 62: 40 Water pump for passenger car and
- Page 63 and 64: 42 Axle box roller bearings of an I
- Page 65 and 66: 43-44 UIC axle box roller bearings
- Page 67 and 68: 45Axle box roller bearingsof series
- Page 69 and 70: 47Axle box roller bearingsof the Ch
- Page 71 and 72: 48 Axle box roller bearings for an
- Page 73 and 74: 50Axle box roller bearingsaccording
- Page 75 and 76: 52Universal quill drivefor threepha
- Page 77 and 78: 54 Spur gear transmission for the u
- Page 79 and 80: 55 Bevel gear transmission for city
- Page 81 and 82: 56- 57 Spherical roller bearings as
- Page 83 and 84: 60 Spade-type rudderDesignThe slewi
- Page 85 and 86: 61-62 Ship shaft bearings and stern
- Page 87 and 88: 63-64 Ship shaft thrust blocksThe t
- Page 89 and 90: 64a: Complete ship shaft thrust blo
- Page 91 and 92: 65 RefinersWood chips from the wood
- Page 93 and 94: 66 Suction rollsSuction rolls are f
- Page 95 and 96: 68 Dryer rollsThe remaining water i
- Page 97 and 98: 69 Guide rollsGuide rolls guide, as
- Page 99: 70 Calender thermo rollsThe paper p
- Page 103 and 104: 73 Run wheel of a material ropewayO
- Page 105 and 106: 74 Rope return sheaves of a passeng
- Page 107 and 108: 75 Rope sheave (underground mining)
- Page 109 and 110: 76 Rope sheave of a pulley blockIn
- Page 111 and 112: 77 Crane pillar mounting with a sph
- Page 113 and 114: 79 Roller track assemblyThe radial
- Page 115 and 116: 80 Crane run wheelOperating dataWhe
- Page 117 and 118: 81 Crane hookThe load suspended fro
- Page 119 and 120: 83 Head pulley of a belt conveyorOn
- Page 121 and 122: Internal bearings for the tension/8
- Page 123 and 124: Belt conveyor idlersMany industries
- Page 125 and 126: 87 Bucket wheel shaft of a bucket w
- Page 127 and 128: 89 Drive unit of a finished goods e
- Page 129 and 130: 91 Vibrating road rollerThe vibrati
- Page 131 and 132: 92 Double toggle jaw crusherDouble
- Page 133 and 134: 94 Double-shaft hammer crusherDoubl
- Page 135 and 136: 95 Ball tube millTube mills are mos
- Page 137 and 138: 96 Support roller of a rotary kilnR
- Page 139 and 140: Vibrating machinesVibrating screens
- Page 141 and 142: 98 Two-bearing screen with straight
- Page 143 and 144: 99 Four-bearing screenThe vibration
- Page 145 and 146: 101-103 Large capacity convertersCo
- Page 147 and 148: 104Roll bearings of afour-high cold
- Page 149 and 150: Work rolls for the finishing sectio
Floating bearingLocating bearing70: Calender thermo roll bearings99 FAG