BEARING HOUSINGS - CBC Bearings

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9 EXTERNAL SELF ALIGNING BALL BEARING UNITS RADIAL INTERNAL CLEARANCE OF BALL BEARING TYPES TYPICAL CLEARANCES TYPE CODE Radial Internal Clearance Cylindrical bore type Tapered bore type Standard type D1 CN C3 Heat resistant type HT2D1 C4 C5 Cold resistant type CT1D 1 CN C3 CYLINDRICAL BORE Values in u m NOMINAL BEARING BORE DIA. d C2 CN Normal C3 C4 Over I ncl M in. M ax. M in. M ax. M in. M ax. M in. Max. 10 18 0 9 3 18 11 25 18 33 18 24 0 10 5 20 13 28 20 36 24 30 1 11 5 20 13 28 23 41 30 40 1 11 6 20 15 33 28 46 40 50 1 11 6 23 18 36 30 51 50 65 1 15 8 28 23 43 38 60 65 80 1 15 10 30 25 51 46 71 80 100 1 18 12 36 30 58 53 84 100 120 2 20 15 41 36 66 60 97 120 140 2 23 18 48 41 81 71 114 1). The clearances above are net clearances, without considering elastic deformation due to measuring load. With tapered bore bearings , internal clearances are each one level greater than those of cylindrical bore bearings. TAPERED BORE For ball bearing with a tapered bore (K), the radial internal clearances are each one level greater than those of cylindrical bore bearings as given in the above table. Example: d = 40mm — UC208, CN = 6 - 23 um d = 40mm — UK208, C3 = 18 - 23 um 180
VII 9 INTERNAL SELF-ALIGNING BALL & ROLLER BEARING UNITS SPHERICAL ROLLER BEARINGS Spherical roller bearings consist of an outer ring having a continuous spherical raceway within which two rows of barrelshaped rollers are guided by an inner ring with two raceways separated by a centre rib. SELF ALIGNING BALL BEARINGS The outer ring raceway of self-aligning ball bearings forms a spherical surface whose centre is common to the bearing centre. The inner ring of the bearing has two raceways. The balls, cage, and inner ring of these bearings are capable of a shifting in order to compensate for a certain degree of misalignment with the outer rings. As a result, the bearing is able to align itself and compensate for unevenness in the shaft/housing finish, bearing fitting errors, and other sources of misalignment. However, since axial load capacity is limited, self-aligning ball bearing are not suitable for applications with heavy axial loads. The use of an adaptor on the tapered bore of the inner diameter makes installation and disassembly much simpler, and for this reason adaptors are often used on equipment with drive shafts. This bearing has self-aligning properties, and is therefore suited for use in situations where misalignment between the inner and outer rings occurs due to housing installation error or shaft flexure. Spherical roller bearings have a large capacity for radial loads, axial loads in either direction, and complex loads. They are also suited to applications where vibration and shock loads are encountered. When operating under axial loads however, it is best to maintain conditions so that Fa/Fr 2e to prevent the occurrence of a sliding movement along the row of rollers not receiving the axial load. (For the value of e refer to dimension tables.) Both cylindrical and tapered bore bearings are available. Bearings with a tapered bore are specified by attaching the suffix ‘K’ to the end of the bearing’s basic number. The standard tapered ratio is 1:12 for bearings with a ‘K’ suffix. In bearing series 240 and 241, the suffix ‘K30’ indicates that the taper ratio for those bearings is 1:30. Most tapered bore bearings incorporate the use of adapters and withdrawal sleeves for shaft mounting. Allowable misalignment Normal load (loads equivalent to 0.09C r)......0.009rad (0.5 O ) Light load ......................................................0.035rad (2.0 O ) Allowable misalignment Listed below are the allowable misalignment angles for bearings with self aligning characteristics when place under normal load conditions. This degree of allowable misalignment may be limited by the design of structures around the bearing. Allowable misalignment under normal loads (loads equivalent to 0.09C r): 0.07rad (4.0 O ) SPACER RINGS In the cylindrical bore type housings the bearing seat is wider than the bearing to allow lateral movement of the shaft. Spacer rings are provided with each pair of housings and are used to locate one bearing per shaft. The outer bearing will not be located, but will be free to move laterally if shaft expansion or deflection takes place. 181
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BEARING HOUSINGS, BEARING UNITS AND
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A CONSOLIDATED BEARING COMPANY (AUS
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INDEX 1 A General information Page
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1 INDEX 3 3 Adapter sleeves ADAPTER
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A PART NUMBERING SYSTEM EXTERNAL SE
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A PART NUMBERING SYSTEM SNG HOUSING
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A PART NUMBERING SYSTEM TH HOUSING
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A PART NUMBERING SYSTEM FC/FCM HOUS
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A SEALING ARRANGEMENTS SOLID HOUSIN
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A DUST COVER DESIGNATION STEEL PLAT
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A SEALING ARRANGEMENTS VEE-LAB SEAL
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A HOUSING CONSTRUCTION PILLOW BLOCK
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1 PILLOW BLOCKS UKP2 Series normal
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1 PILLOW BLOCKS UKPX Series medium
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1 PILLOW BLOCKS UKP3 Series heavy d
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1 PILLOW BLOCKS UKSB2 Series normal
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1 PILLOW BLOCKS UKSBX Series medium
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1 FLANGE UNITS UKF2 Series normal d
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1 FLANGE UNITS UKFX Series medium d
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1 FLANGE UNITS UKF3 Series heavy du
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1 FLANGE UNITS UKFC2 Series normal
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1 FLANGE UNITS UKFCX Series medium
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1 FLANGE UNITS UKFL2 Series normal
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1 TAKE UP UNITS UKT2 Series normal
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1 TAKE UP BLOCKS UCT3 Series heavy
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1 CARTRIDGE UNITS UKC2 Series norma
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1 SPECIAL UNITS UCUP2 Series normal
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1 SPECIAL UNITS UCFH2 Series normal
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1 SPECIAL UNITS UCPE2 Series Ductil
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1 SPECIAL UNITS UCPG2 Series Heavy
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1 SPECIAL UNITS FUCPR2 Series Glass
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1 SPECIAL UNITS FUCFR2 Series Glass
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1 SPECIAL UNITS FUCPM2 Series Cast
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1 SPECIAL UNITS AELPB2 Series light
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1 SPECIAL UNITS AELPP2 Series light
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1 SPECIAL UNITS AELPF2 Series light
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1 TAKE UP FRAMES UCT2 Series normal
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2 TAKE UP FRAMES UCM2 Series normal
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2 INSERT BALL BEARINGS UC2 Series n
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2 INSERT BALL BEARINGS UC3 Series h
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2 INSERT BALL BEARINGS UKX Series m
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2 INSERT BALL BEARINGS AEL2 Series
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2 INSERT BALL BEARINGS AS2 Series n
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2 INSERT BALL BEARINGS UCS2-N Serie
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2 INSERT BALL BEARINGS UELS2-N Seri
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2 INSERT BALL BEARINGS NTN Triple-s
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2 INSERT BALL BEARINGS UC2LLJ Serie
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2 INSERT BALL BEARINGS REL2-LLJ Ser
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2 INSERT BALL BEARINGS JEL2-V19 Ser
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23 ADAPTER SLEEVES H200 Series norm
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23 ADAPTER SLEEVES H2300 Series med
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24 WIRE ROPE SHEAVES TECHNICAL DATA
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24 WIRE ROPE SHEAVES SCHEMATICS Sea
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5 PLUMMER BLOCKS SNG500 - 600 Serie
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108 5 PLUMMER BLOCKS SNG 500 Series
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5 PLUMMER BLOCKS SNG 600 Series TA
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5 PLUMMER BLOCKS SNG300 Series D2 D
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5 PLUMMER BLOCKS SD3100 Series heav
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5 PLUMMER BLOCKS SN-SSN500 Series m
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5 PLUMMER BLOCKS SN-SSN Part Number
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5 PLUMMER BLOCKS SAF225-226 Series
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5 PLUMMER BLOCKS SN600 Series heavy
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5 SOLID HOUSINGS WB500 Series heavy
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5 FLANGED HOUSINGS RFS500 Series me
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5 TAKE UP HOUSINGS TH500 Series med
Page 132 and 133: 5 METRIC SERIES HOUSINGS WSB500M Se
Page 134 and 135: 5 METRIC SERIES HOUSINGS H THM500 S
Page 136 and 137: 6 Part numbering system COOPER Spli
Page 138 and 139: 6 COOPER sealing solutions Temperat
Page 140 and 141: 6 COOPER split bearing units Series
Page 142 and 143: 7 SPHERICAL ROLLER BEARINGS WA222B
Page 144 and 145: 7 SPHERICAL ROLLER BEARINGS TO COME
Page 146 and 147: 7 SPHERICAL ROLLER BEARINGS Cylindr
Page 148 and 149: 7 SPHERICAL ROLLER BEARINGS Cylindr
Page 154 and 155: 7 ADAPTER For TO COME spherical rol
Page 160 and 161: 7 SELF-ALIGNING BALL BEARINGS TO CO
Page 166 and 167: 7 ADAPTER For self-aligning ball be
Page 168 and 169: 7 ADAPTER For self-aligning ball be
Page 170 and 171: 168 8 LOCKWASHERS AW Series NOTE: T
Page 172 and 173: 8 LOCKPLATES AL and ALL Series S L2
Page 174 and 175: 9 EXTERNAL SELF ALIGNING BALL BEARI
Page 184 and 185: 9 INTERNAL SELF-ALIGNING BALL & ROL
Page 198 and 199: 9 STRENGTH OF PLUMMER BLOCK HOUSING
Page 202: 9 RPM CONVERSION TABLES SHAFT DIAME
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