Spherical Roller Bearing in Ball and Roller Bearings by NTN Corporation Japan

Catalog: Ball and Roller Bearings
Company/Brand: NTN Corporation Japan

spherical roller bearing in Ball and Roller Bearings by NTN Corporation Japan

technical data a 5 deep groove ball bearings b 5 miniature and extra small bearings ... b 29 angular contact ball bearings b 41 self-aligning ball bearings b 77 ... cylindrical roller bearings b 89 tapered roller bearings b-131 ... spherical roller bearings b-229 thrust bearings b-265 locknuts lockwashers lockplates ...

and characteristics of rolling bearings 1 classification and characteristics of ... rolling bearings 1.1 rolling bearing construction most rolling bearings ... ring rolling elements either balls or rollers and a rolling element retainer the ... come in two general shapes ball or rollers rollers come in four basic styles ... cylindrical needle tapered and spherical balls geometrically contact the raceway ... points while the contact surface of rollers is a line contact theoretically ... rolling bearings are so constructed as to allow the ... time while the rolling elements and the bearing rings take any load applied to the ... bearings at the contact point between the ... cage ball ball cage deep groove ball bearing fig 1.1 angular contact ball bearing ... 1.2 outer ring inner ring outer ring roller cage roller cage 1.2 classification of ...

and characteristics of rolling bearings single row deep groove ball bearings ... single row angular contact ball bearings radial ball bearings duplex angular ... contact ball bearings double row angular contact ball ... bearings four-point contact ball bearings ball bearings self-aligning ball ... bearings insert ball bearings single direction thrust ball bearings ... high-speed duplex angular contact ball bearings for axial loads thrust ball bearings ... rolling bearings double direction angular contact thrust ... ball bearings single row cylindrical roller bearings double row cylindrical roller ... bearings needle roller bearings radial roller bearings single row tapered roller ... bearings double row tapered roller bearings spherical roller bearings roller ...

and characteristics of rolling bearings width contact angle snap ring cage ... rivet ball outer ring inner ring bearing bore diameter pitch circle diameter ... bearing outside diameter outer ring front face ... raceway inner ring side face shield bearing chamfer deep groove ball bearing ... angular contact ball bearing contact angle bearing width inner ring ... with rib roller inscribed circle diameter outer ring ... l-shaped loose rib standout tapered roller cone back face rib cone front face rib ... small inside diameter sid cylindrical roller cone back face cone front face cup back ... face cup front face cylindrical roller bearing tapered roller bearing lock washer ... bearing bore diameter locknut tapered bore of ... inner ring sleeve bearing height ball shaft washer inner ring ...

bearing selection select bearing s internal clearance select cage type ... sealing method select any special bearing specifications confirm handling ... refer to page insert 86 possible roller bearings exhibit less elastic ... deformation than ball bearings and therefore are recommended for such ... equipment furthermore in some cases bearings are given an initial load preloaded to ... is commonly applied to deep groove ball bearings angular contact ball bearings and ... tapered roller bearings 6 misalignment of inner and outer rings ... degree of misalignment between the bearing s inner and outer rings in cases where ... be relatively large self-aligning ball bearings spherical roller bearings or bearing ... 2.1 7 noise and torque levels rolling bearings are manufactured and processed ...

bearing selection 2.2 type and character is ... types and characteristics of rolling bearings table 2.1 types and characteristics of ... rolling bearings bearing types deep groove ball bearings angular ... contact angular flange angular aligning roller flange cylindrical ball contact ... cylindrical contact ball bearings cylindrical roller bearings ball ... bearings ball bearings bearings roller bearings roller bearings bearings ... for db arrangement for fixed bearings for floating bearings non-separable or ... separable tapered bore bearings remarks reference page b-5 for duplex ... np nh type b-89 b-89 tapered multi-row spherical thrust double row spherical angular 4- ... row roller roller ball roller contact bearings tapered bearings bearings thrust ball ...

bearing selection table 2.2 2 bearing arrangement placed oppositely ... axles etc face to face table 2.2 3 bearing arrangement vertical shaft arrangement ... comment application when fixing bearing is a duplex angular contact ball ... bearing non-fixing bearing is a cylindrical roller bearing machine ... on the relative alignment of the spherical surface of the etc rollers in the upper ... and lower bearings shaft deflection and fitting errors can ... be absorbed 3 lower self-aligning spherical roller thrust bearing pre-load is ...

low speed heavy loading etc ball bearings roller bearings 2 1 3 1.5 0.5 1 note 1 ... for spherical thrust roller bearings min s0 value=4 2 for shell needle ... roller bearings min s0 value=3 3 when vibration and/or ... co basic static rating load n radial bearings cor thrust bearings coa po max maximum ...

bearing load calculation 4.4 equivalent load 4. ... loads and dynamic axial loads act on a bearing at the same time the hypothetical load ... acting on the center of the bearing which gives the bearings the same life ... the dynamic equivalent load for radial bearings this load is expressed as pure radial ... equivalent radial load for thrust bearings it is expressed as pure axial load and ... values for x and y are listed in the bearing tables 2 dynamic equivalent axial load ... as a rule standard thrust bearings with a contact angle of 90° cannot ... loads however self-aligning thrust roller bearings can accept some radial load ... dynamic equivalent axial load for these bearings is given in formula 4.18 pa fa 1.2fr 4 ... loads are simultaneously applied to the bearing for radial bearings this hypothetical ...

bearing load calculation fr2 0.5fr1 y1 70 k 170 ... all the values for fri and fai from the bearing tables are greater than fa fr e 0.18 ... and fig 3.1 the life factor fh for each bearing is f h1 f h2 cr1 fn pr1 fn cr2 pr2 0. ... therefore a2 b-136 lh1 1.4 4t-tapered roller bearings shown in lh2 13,200 a2 13,200 ... ,020kgf the speed factor of cylindrical roller bearing f at n 2,000 r/min fn 33.3 2, ... 000 3/10 the combined bearing life lh from formula 3.6 is 1 lh 1 e ... 24,000 example 5 find the mean load for spherical roller bearing 23932 la 320 kn when ... allowable axial load of cylindrical roller bearing is shown in a heading 4.5 the ...

boundary dimensions and bearing number codes standardized and have been ... standardization there are many standard bearing dimensions which are not presently ... boundary dimensions for radial bearings excluding tapered roller bearings are ... attached tables related specifications bearing numbers are comprised of a basic ... codes the makeup and order of bearing numbers is shown in table 5.2 the basic ... indicates general information about a bearing such as its fundamental type boundary ... prefixes and suffixes which indicate a bearing s tolerances internal clearances and ... related specifications 5.2 bearing numbers rolling bearing part numbers ... indicate bearing type dimensions tolerances internal ... construction and other bearing number examples 6205zzc3 2a shell ... 25mm diameter series 2 deep groove ball bearing 23034bd1 lubrication hole/lubrication ...

boundary dimensions and bearing number codes table 5.2 bearing number ... code 4t et e f h m 5s hl 4t tapered roller bearings et tapered roller bearings ... carburized alloy steel bearings stainless steel bearings high speed ... steel bearings plated bearings ceramic rolling element bearings hl ... high lubrication roller bearings bearing series code basic numbers dimension ... code 1 contact angle deep groove ball bearings type code 6 68 69 60 62 63 78 79 70 72 ... 560 2,360 2,500 angular contact ball bearings a standard contact angle 30° b standard ... ° c standard contact angle 15° tapered roller bearings b contact angle over 10° c to/ ... ° to/including 32° angular contact ball bearings type code 7 self-aligning ball bearings ... 1 2 3 4 1 2 3 ts2 dimension stabilized bearing for high temperature use to 160°c ts3 ...

bearing tolerances 6 bearing tolerances 6.1 dimensional accuracy and ... running accuracy bearing tolerances or dimensional accuracy ... by iso and jis b 1514 standards rolling bearing tolerances for dimensional accuracy ... tolerances necessary when installing bearings on shafts or in housings running ... is defined as the allowable limits for bearing runout during operation dimensional ... bore diameter outer diameter assembled bearing width and bore diameter uniformity as ... width and height variation for thrust bearings running accuracy running accuracy ... outer diameter runout allowable rolling bearing tolerances have been established ... 0 corresponds to normal precision class bearings and precision becomes progressively ... classes are applicable to the major bearing types table 6.2 shows a relative ...

bearing tolerances table 6.8 tolerance of ... spherical thrust roller bearing table 6.8 1 inner rings nominal bore ... deviation of single direction thrust bearing ts high +150 +200 +250 +300 +350 +400 + ... type angular contact thrust ball bearings table 6.9 1 inner rings and bearing ... deviation of single direction thrust bearing ts class 5 class 4 high 0 0 0 0 0 0 0 0 ... of sia against d of the same bearings 2.5 3 4 5 5 7 7 8 10 a-43 ...

bearing fits 3 consideration must also be given ... that fit selection will effect internal bearing clearance selection refer to page ... is recommended for sl type cylindrical roller bearings table 7.2 general standards ... for radial bearing fits jis class 0 6 6x table 7.2 1 load ... conditions magnitude cylindrical roller bearing spherical roller bearings load ball ... bearing tapered roller bearing nature fit conditions of load diameter ... 2 fit with shaft fits for tapered bore bearings class 0 with adapter assembly/ ... withdrawal sleeve all loads all bearing types all shaft diameters tolerance ... with single-row angular contact bearings and tapered roller bearings therefore ... m5 may be substituted for k6 and m6 use bearings with larger internal clearances than cn ...

bearing internal clearance and preload 1 ... clearance due to interference when bearings are installed with interference fits on ... ring will contract thus reducing the bearings internal clearance the amount of ... varies depending on the shape of the bearing the shape of the shaft or housing ... clearance due to heat differential mm bearing steel linear expansion coefficient 12.5 ... by using formula 8.4 or 8.5 for ball bearings and spherical roller bearings do 0.20 d ... 4.0d 8.4 for roller bearings except self-aligning do 0.25 d 3.0d 8. ... 5 where d bearing bore diameter mm d bearing outside diameter mm 2 reduced internal ... internal clearance of deep groove ball bearings nominal bore diameter d mm over incl 2. ...

bearing internal clearance and preload table 8. ... 10 radial internal clearance of spherical roller bearings nominal bore diameter d ... 410 440 480 530 580 650 710 780 860 950 bearing with cylindrical bore c3 min 35 35 40 ... clearance of four points contact ball bearings nominal bore diameter d over 17 40 60 ...

bearing internal clearance and preload 8.3 ... preload normally bearings are used with a slight internal ... conditions however in some applications bearings are given an initial load this means ... that the bearings internal clearance is negative before ... and is commonly applied to angular ball bearings and tapered roller bearings 8.3.1 ... purpose of preload giving preload to a bearing results in the rolling element and ... this has the effect of making the bearing extremely rigid so that even when load ... is applied to the bearing radial or axial shaft displacement does ... rotation also for thrust ball and roller bearings mounted on horizontal shafts ... is to apply an axial load to two duplex bearings so that the inner and outer rings are ... method basic pattern applicable bearings object characteristics preloading is ...

one of the main functions required of a bearing is that it must have low friction under ... normal operating conditions rolling bearings have a much smaller friction ... coefficient than the slide bearings especially starting friction the ... friction coefficient for rolling bearings is calculated on the basis of the ... bearing bore diameters and is expressed by ... coefficient friction moment nmm load n bearing bore diameter mm 10.1 10.2 temperature ... rise almost all friction loss in a bearing is transformed into heat within the ... bearing itself and causes the temperature of ... the bearing to rise the amount of thermal ... friction coefficient for rolling bearings varies with the type of bearings load ... friction coefficients for various bearing types are listed in table 10.1 table 10 ...

lubrication table 11.5 bearings space ratio k bearing type ball ... bearings 1 nu-type cylindrical roller bearings 2 n-type cylindrical roller bearings 3 ... tapered roller bearings spherical roller bearings 1 remove 160 series 2 remove ... generally for every 10°c increase in bearing temperature above 80°c the ... time limit for deep groove ball bearing 6206 with a radial load of 2.0 kn ... time interval depends on the type of bearing dimensions bearing s rotating speed ... bearing temperature and type of grease an easy ... interval for standard rolling bearing grease when used under normal operating ... increase the grease re from the bearing tables the allowable speed for bearing ... to bore diameter d 30 from bearing table on the vertical line for radial ...

lubrication 11.4 solid grease for bearings with solid grease solid grease is a ... proportion of the lubricant within the bearing the result of this solidification is ... grease does not easily leak from the bearing even when the bearing is subjected to ... strong vibrations or centrifugal force bearings with solid grease are available in two ... grease is standard for deep groove ball bearings small diameter ball bearings and ... bearing units full-pack solid grease is ... standard for self-aligning ball bearings spherical roller bearings and needle ... roller bearings primary advantages 1 clean working ... with minimal grease leakage 2 low bearing torque with spot-pack type solid grease ... to ntn special catalog of solid grease bearings 11.5 oil lubrication oil lubrication is ...

lubrication 1 2 10 4 3 4 5 6 bearing type spherical roller bearings tapered ... roller bearings angular contact ball bearings deep groove ball bearings cylindrical ... roller bearings 8 10 15 20 30 40 dp loa kgf kn 30,000 ...

shaft and housing design 14.2 bearing fitting dimensions 14.2.1 abutment ... height h should be larger than the bearings maximum allowable chamfer dimensions ... directly contacts the flat part of the bearing end face the fillet radius must be ... smaller than the bearing s minimum allowable chamfer dimension ... min so that it does not interfere with bearing seating table 14.3 lists abutment ... height h and fillet radius ra for bearings to be applied to very large axial loads ... a fillet radius ra larger than the bearing chamfer dimension is required to ... adequate contact surface with the bearing fig 14.1b spacers may be used ... in table 14.4 rrrhrrrrhrarb fig 14.1 bearing mounting with spacer table 14.3 fillet ... is extremely small except for tapered roller bearings angular contact bearings ...

shaft and housing design 14.2.3 thrust bearings and relief dimensions for thrust ... bearings it is necessary to make the raceway ... heights will be larger than for radial bearings refer to dimension tables for all ... thrust bearing relief dimensions 14.4 allowable ... bearing misalignment a certain amount of ... misalignment of a bearing s inner and outer rings occurs as a ... be relatively large self-aligning ball bearings spherical roller bearings bearing units ... and other bearings with aligning properties are advisable ... misalignment will vary according to bearing type load conditions internal ... below these standard levels table 14.6 bearing type and allowable misalignment/ ... allowable misalignment deep groove ball bearings angular contact ball bearings single ...

bearing handling fig 15.10 installation using ... clearance measurement method for spherical roller bearings torque needed to ... install bearings with tapered bores directly onto ... a hydraulic nut is used to drive the bearing onto a tapered shaft fig 15.9 b and c ... withdrawal sleeve with tapered bore bearings as the inner ring is driven axially ... the interference will increase and the bearing internal radial clearance will decrease ... internal radial clearance between the rollers and outer ring of spherical roller ... bearings should be measured with a thickness ... gauge under no load while the rollers are held in the correct position the ... estimate by measuring the distance the bearing has been driven onto the shaft for ... spherical roller bearings table 15.1 indicates the appropriate ...

bearing handling table 15.1 installation of ... tapered bore spherical roller bearings nominal bearing bore diameter d over ...

approximate average groove diameter for bearing inner and outer rings the effective ... from the measured valued for the bearing bore diameter and shaft this difference ... groove diameter average groove diameter bearing type inner ring di deep groove ball ... bearings all types 1.05 4d d 5 3d d 1.05 4 2d ... .95 d 4d 5 d 3d 4 d 4d 5 cylindrical roller bearings1 all types spherical all types ... roller bearings d inner ring bore diameter mm d outer ... 1 d dh 2 2 do housing inner diameter bearing outer diameter outer ring average ...

tapered roller bearings metric system sizes 329x,320x,330,331, ... inch system sizes multi-row tapered roller bearings outward facing type 4130,4230, ... 4322,4303,4303d,4323 multi-row tapered roller bearings inward facing type 3230,3231 ... four-row tapered roller bearings cr0 b-131 b-138 b-156 b-194 b-208 b-212 ... spherical roller bearings 239k 230k 240k30 231k 241k30 222k 232k ... 213k 223k adapters for spherical roller bearings withdrawal sleeves for spherical roller ... bearings b-229 b-232 b-252 b-257 thrust bearings ... double row angular contact thrust ball bearings b-265 b-270 b-274 b-278 b-282 high ... duplex angular contact thrust ball bearings self-aligning roller thrust bearings ...

self-aligning ball bearings 1 design features and characteristics ... ring raceway of self-aligning ball bearings forms a spherical surface whose center ... is common to the bearing center the inner ring of the bearing ... the balls cage and inner ring of these bearings are capable of a shifting in order to ... with the outer rings as a result the bearing is able to align itself and compensate ... for shaft housing finishing unevenness bearing fitting error and other sources of ... load capacity is limited self-aligning bearings are not suitable for applications with ... standard cage types self aligning ball bearings use pressed cages with the exception of ... exceed 120°c 3 ball protrusion bearings with part numbers listed in diagram 2 ... balls which protrude slightly from the bearing face their degree of protrusion is ...

spherical roller bearings 1 types construction and ... characteristics spherical roller bearings consist of an outer ring having a ... continuous spherical raceway within which operates two rows ... of barrel-shaped rollers which are in turn guided by an inner ... by a center rib refer to diagram 1 this bearing has self-aligning properties and ... installation error or shaft flexure spherical roller bearings have a large capacity ... sliding movement along the row of rollers not receiving the axial load for the ... type there are various other types of spherical roller bearings among these type e has ... high load capacity in addition to bearings with cylindrical bore diameters those ... bore diameters are also available bearings with tapered bore diameters are ...

spherical roller bearings 2 standard cage types hwzd standard ... cage types for self-aligning bearings are shown in table 2 in general pressed ... cages are standard for small sized bearings and machined cages are standard for ... large sized bearings e type bearings use as their standard cage type a cage ... units mm oil groove depth h nominal bearing oil groove oil inlet width width ... 3.5 5.0 6.5 table 2 standard cage types bearing molded resin cage series pressed cage ... 22264b table 4 oil inlet number nominal bearing outer diameter mm over up to including ... 3 oil inlets and oil groove dimensions spherical roller bearings with an outer diameter ... purpose of supplying lubricant to the bearing s moving parts when necessary oil ... and oil grooves can also be provided on bearings with outer diameters less than 320 mm ...

spherical roller bearings 5 adapters and withdrawal sleeves ... adapters are used for installation of bearings with tapered bore diameters on ... also used to install and disassemble bearings with tapered bore diameters onto and ... cylindrical shafts in disassembling the bearing from the shaft the nut is pressed down ... then the sleeve is drawn away from the bearing s inner diameter surface for bearings ... the surfaces of the adapter sleeve and bearing inner bore by means of a pressure ... suffix hf should be added to the bearing number if the oil supply inlet is ... the suffix hb should be added to the bearing number for adapter sleeves the ... suffix h is added to the bearing s number in both cases for the ...

spherical roller bearings brrddd cylindrical bore tapered bore ... speeds static rpm cor grease oil 1 bearing numbers 2 d d cr cylindrical bore ... this value is allowable 2 k indicates bearings have tapered bore with a taper ratio of ...

spherical roller bearings ra ra da da equivalent bearing load ... 83.5 112.5 89 117.5 note upon request bearings with oil inlets and oil grooves on the ... add the suffix d1 to the end of the bearing number example 22214bd1 ...

spherical roller bearings brrddd cylindrical bore tapered bore ... speeds static rpm cor grease oil 1 bearing numbers 2 d d cr cylindrical bore ... cages 75 of this value is allowable 2 bearings appended with k have a tapered bore ... ratio of 1:12 bearings appended with k30 have a tapered bore ...

spherical roller bearings ra ra da da equivalent bearing load ... 9 100.5 135 107.5 144 note upon request bearings with oil inlets and oil grooves on the ... add the suffix d1 to the end of the bearing number example 23024bd1 ...

spherical roller bearings ra ra da da equivalent bearing load ... 11.8 note when the outer diameter of a spherical roller bearing is 320mm or larger an ... page b-230 on dimensions we can make bearings with oil hole or oil groove in the ... an outer diameter of 320mm or less such bearings are indicated by attaching d1 to the ... end of the bearing number ex 23032bd1 b-237 ...

spherical roller bearings ra ra da da equivalent bearing load ... 30.5 note when the outer diameter of a spherical roller bearing is 320mm or larger an ... page b-230 on dimensions we can make bearings with oil hole or oil groove in the ... an outer diameter of 320mm or less such bearings are indicated by attaching d1 to the ... end of the bearing number ex 23040bd1 b-239 ...

spherical roller bearings brrddd cylindrical bore tapered bore ... speeds static rpm cor grease oil bearing numbers d d cr cylindrical bore tapered ... 24156bk30 22256bk 220 240 260 280 1 bearings appended with k have a tapered bore ... ratio of 1:12 bearings appended with k30 have a tapered bore ...