Ball and Roller Bearings by NTN Corporation JapanView 49 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 2] - 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 ... [Page 6] - shaft and housing design 14.1 fixing of bearings 14.2 bearing fitting dimensions a-83 a- ... accuracy a-69 a-69 a-69 14.4 allowable bearing misalignment 15 bearing handling 15.1 ... bearing storage a-86 a-86 a-86 a-88 a-90 a-90 ... lubrication 11.1 lubrication of rolling bearings 11.2 lubrication methods and ... lubrication 11.4 solid grease for bearings with solid grease 11.5 oil lubrication ... .4 post installation running test 15.5 bearing disassembly 16 bearing damage and ... corrective measures a-93 12 external bearing sealing devices a-78 17 technical data ... a-95 17.1 deep groove ball bearing radial internal clearances and axial ... internal clearances a-95 13 bearing materials 13.1 raceway and rolling ... a-81 a-81 a-82 17.2 angular contact ball bearing axial load and axial ... |
Rolling Bearings Handbook by NTN Corporation JapanView 20 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 6] - ntn rolling bearings handbook 2 classification and ... characteristics of rolling bearings 2.1 rolling bearing construction ... rolling bearings basically consist of four parts outer ... cage the shapes of parts of typical bearings are shown in fig 2.1 ˇrolling bearing ... rings inner and outer rings or bearing washer 1 the surface on which the ... raceway surface the load placed on the bearings is supported by this contact surface ... japanese industrial standards rolling bearing rings of thrust bearings are referred ... to as rolling bearing washers the inner ring as shaft ... elements come in two general shapes balls or rollers rollers come in four basic ... support the load while rolling on the bearing ring ˇcages along with keeping the ... machined cages and resin formed cages 2 bearing type finished part outer ring inner ... [Page 7] - ntn rolling bearings handbook 2 2.2 classification of ... rolling bearings rolling bearings are generally classified as shown in ... fig 2.2 in addition to these there are bearings of various other shapes for more ... information see the various ntn catalogs for terminology used for the ... parts of typical bearings see fig 2.3 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 rolling bearing unit ball bearings thrust ball bearings thrust ball ... bearings high-speed duplex angular contact ball ... |
Bearings for Special Environments by NTN Corporation JapanView 6 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 6] - and technical data of various bearings 3.1 vacuum bearings table 2 performance ... of vacuum bearings excellent allowable temperature range ° ... c good fair not recommended bearing type mos2-coated bearings pb-coated ... bearings ag-coated bearings allowable vacuum range pa 10-5 1 10-5 ... outgassing conductivity 150 300 400 200 bearings with vacuum 10-5vapor pressure grease ... relative performance among vacuum bearings test data results of durability ... durability 10 9 mos2 sp tested bearing internal rotor external rotor cage ptfe ... revolutions under load rev 10 8 tested bearing loading spring 10 7 ag ip ultra-clean ... fig 2 durability tester for high-vacuum bearing 10 6 mos2 sp ˇtest conditions bearing ... vacuum temperature evaluation criterion deep groove ball bearings 8 22 7 open type ... [Page 8] - 3.2 bearings for clean environments table 3 ... performance of bearings for clean environments excellent good ... fair not recommended bearing type bearings with low out particle grease bearings ... for vacuum environment ultra-clean bearings long life ultra-clean bearings ... represent relative performance among bearings designed for clean environments 1 ... from evaluation because this type of bearing is used under atmospheric pressure test ... to out particles ˇtest conditions deep groove ball bearings 8 22 7 axial load 10n ... 0.3 µm temperature room temperature bearing 20 airborne particles number of ... collected air number of particles/cf ntn s ultra-clean bearings generate a very ... of out particle by ultra-clean bearing at atmospheric pressure ˇtest ... |
Care and Maintenance of Bearings by NTN Corporation JapanView 6 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 9] - 6 months 3 months 1 to 3 months 5 bearing failures and solutions the bearing is ... lubrication and/or mounting of the bearing it is sometimes difficult to determine ... the real cause of bearing failure because many interrelated ... condition of the machine on which the bearings failed also installation location ... and surrounding structure of the bearings should be taken into consideration ... bearing failures are classified and illustrated ... figures 5.1 to 5.7 show the names of bearing parts referred to in the descriptions ... temperature exceeding 120°c 4 check of bearings after operation bearings after ... each component to evaluate whether the bearings operating conditions are satisfactory ... the failure cases given in section 5 bearing failures and solutions outer ring ... ring inner ring outer ring roller cage ball cage roller cage fig 5.1 deep groove ... [Page 10] - examine operating conditions and adopt bearings with larger capacity as necessary 3 ... installation errors photo a-1 ˇdeep groove ball bearing ˇinner ring outer ring and ... balls are flaked ˇthe cause is excessive load ... a-2 ˇouter ring of angular contact ball bearing ˇflaking of raceway surface ... spacing equal to distances between balls ˇthe cause is improper handling photo a ... -3 ˇinner ring raceway of a deep groove ball bearing photo a-4 ˇouter ring raceway ... of an angular contact ball bearing 8 ... |
Railway Bearings by NTN Corporation JapanView 3 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 25] - types of ntn railway bearings insulated bearings-resin coated type for traction motor ... brbrrrdddd cylindrical roller bearings deep groove ball bearings bearing types ... bearing basic part numbers boundary dimensions ... -nu214 7mp2-nu314 cylindrical roller bearings 7mp2-nu215 7mp2-nu315 7mp2-nu316 7mp2- ... nu217 7mp2-nu219 7mp2-6310 7mp2-6311 deep groove ball bearings 7mp2-6312 7mp2- ... 000 64 000 82 000 note please refer to ntn for the bearing internal clearance and ... the table lists the current production bearings for additional sizes please contact ntn ... [Page 26] - types of ntn railway bearings insulated bearings-ceramic coated type for traction motor ... type nh cylindrical roller bearings type nu deep groove ball bearings ... bearing types bearing basic part numbers boundary dimensions ... 7mc-nu214 7mc-nu314 cylindrical roller bearings 7mc-nu316 7mc-nh318 7mc-nh320 7mc-nh322 ... 7mc-nu326 7mc-nu330 deep groove 7mc-6311 ball bearings 7mc-6312 70 70 ... 110 125 12 21 3 note please refer to ntn for the bearing internal clearance and ... the table lists the current production bearings for additional sizes please contact ntn ... with non-insulation cylindrical roller bearing for the traction motor and refer to ntn ... of non-insulation cylindrical roller bearing can correspond by the one of the ntn ... |
Insulated Bearings Megaohm Series by NTN Corporation JapanView 3 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 3] - insulated bearings megaohmtm series specifications ceramic ... insulated bearings resin insulated bearings standard type bearing steel insulating ... element cage inner ring protected type bearing steel protecting layer cylindrical ... roller bearing deep groove ball bearing cylindrical roller bearing deep groove ... ball bearing bearing numbers ceramic insulated bearings ... resin insulated bearings 7mc3-6330m2c3 clearance cage bore ... diameter dimension series bearing type 7mc protected ceramic layer type ... cage bore diameter dimension series bearing type 7mp standard resin type 7mp2 heat- ... 5kv 3kv 3kv 5kv 5kv note the insulated bearings megaohmtm series includes a range of ... models for technical assistance contact ntn engineering performance the various ... [Page 4] - insulated bearings megaohmtm series dimension tables for ... ceramic insulated bearings b r b2 b r r1 r1 d d d1 drdd nu type nh ... type cylindrical roller bearing bearing types bearing numbers boundary ... dimensions mm d cylindrical roller bearing d b rs min basic load ratings dynamic n ... cr static n cor collar ring numbers d deep groove ball bearing boundary dimensions ... 60 130 80 170 120 260 150 270 150 320 deep groove ball bearing 7mc n -6312 7mc n - ... 6324 7mc n -6230 7mc n -6330 notes for bearing clearances and cage types contact ntn ... engineering the bearing numbers listed here refer to current ... products for bearings with other numbers contact ntn ... |
Needle Roller Bearings Handbook by NTN Corporation JapanView 3 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 6] - ntn needle roller bearing handbook fig 1.2 shows a comparison of ... bearing sizes of standard dimensions and ... loadcarrying capacity needle roller bearings have one-half the outside diameter and ... one-fifth the mass of deep-groove ball bearings needle roller and cage assembly ... bearings differ from general bearings in that if the shaft and bearing ... assemblies can function as independent bearings without inner and outer rings bearings ... be used in the same space as a metal bearing 1 1.4 1.2 mass ratio 1.0 0.8 0.6 0.4 0. ... nn 3007 nu 207 nu 2206 nu 306 nu 2304 bearing series fig 1.2 5 ... [Page 9] - ntn needle roller bearing handbook 2 friction coefficient 1 ... needle roller and cage assembly bearing 3 temperature rise the approximate ... temperature rise of a running bearing is usually calculated with the ... rollers full-complement needle roller bearing the relative slippage speed of adjacent ... of the full-complement needle roller bearing is about twice that of the needle ... roller and cage assembly bearing table 1.2 shows the friction ... coefficient of various types of bearings table 1.2 friction coefficients of ... various bearings bearing classification deep-groove ball bearings angular contact ball ... bearings self-aligning ball bearings cylindrical roller bearings tapered ... roller bearings self-aligning roller bearings thrust ball bearings needle roller and ... |
Long-Life AS Series TAB/ETA Bearings by NTN Corporation JapanView 2 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 2] - ntn long-life as series tab/eta bearings our long-life tab and eta bearings are ... environments and load conditions tab bearings eta bearings our tab and eta bearings ... life and more compact equipment these bearings even last longer than the tmb deep ... groove ball bearings and et tapered roller bearings bearings ... pinions advantages our tab and eta bearings offer better reliability smaller size ... [Page 4] - ntn long-life as series tab/eta bearings table 1 comparison of impression shape ... material throughhardened steel standard bearing tab bearing surface retained impression ... 102.5 97.5 5 4 1 1 carbonized standard bearing steel eta bearing impression diameter 2 ... depth through-hardened steel standard bearing +200 +100 0 -100 +200 +200 +200 depth ... special heat treatment type standard bearing tab bearing standard bearing eta ... bearing through-hardened steel carbonized steel ... stress in impression applicable bearing size ˇdeep groove ball bearings tab 000 ... tab 217 tab 300 tab 311 ˇtapered roller bearings eta bearings are applied for outer ... diameters less than 145 mm contact ntn for information concerning model ... |
Needle Roller Bearings by NTN Corporation JapanView 2 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 15] - classification and characteristics of bearings ntn this catalogue describes the ... following ones of linear motion bearings linear ball bearing machined ring type ... this is a high precision bearing which comprises a machined outer ring ... and face ring steel balls and a synthetic resin cage for ... retaining the balls and rolls on a shaft maintaining the ... available on application ˇsome bearings of these types are provided with a ... of foreign matter therein ˇthe steel balls are guided precisely by the cage so ... rotational motion is available linear ball bearing drawn cup type this is a high ... precision bearing which comprises an outer ring drawn ... thin special steel plate by precision deep drawing steel balls and a synthetic ... resin cage for retaining the balls and rolls on a shaft maintaining the ... [Page 57] - technical data ntn 11.2 bearings with solid grease bearings with solid ... grease means a bearing in which thermal solidification type ... type grease referred to as bearings with solid grease was heated and cooled ... as much lubricant held unchanged the bearings with solid grease is solidified after ... and strong centrifuge act on the bearing thus contributing to prevention of ... lubricant leak and longer bearing life the spot pack specification in ... which bearings with solid grease was packed at ... the full pack specification in which bearings with solid grease was nearly full- ... packed in the spacing volume of bearing are both available for the bearings ... solid grease further the needle roller bearings are all based on the full pack ... specification 11.2.1 characteristics of bearings with solid grease 1 less lubricant leak ... |
Precision Rolling Bearings by NTN Corporation JapanView 2 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 290] - ntn ball screw support bearings 2 fretting resistance test rolling ... the decrease in the weight of the bearing plate after the test is shown in fig 13 ... oil fig 13.7 table 13.5 test conditions bearing mm radial load kn shaft speed min-1 ... temperature °c evaluated with deep groove ball bearing 6206 30 62 16 6.86 2000 ... test rolling table 13.4 test conditions bearing mm load kn max contact surface pressure ... temperature evaluated with thrust ball bearing 51204 20 40 14 2.5 1700 8 30 12 grease ... 0.4 0.2 0 wear 1/10 1 conventional type bearing plate suj2 lithium base general purpose ... grease 2 ultage series bearing plate suj2 with special heat treatment ... special grease 1 conventional type bearing plate suj2 lithium base general purpose ... grease 2 ultage series bearing plate suj2 with special heat treatment ... [Page 291] - ntn ball screw support bearings 4 grease life test service life of the ... seal type 2 duplex angular contact ball bearings ht series ht type duplex ... angular contact ball bearings feature larger axial load capacity ... as a standard angular contact ball bearing contact angle 30° bearings smaller ... products table 13.6 test conditions bearing mm radial load n axial load n shaft ... temperature °c evaluated with deep groove ball bearing 6204 20 47 14 67 67 10000 ... 13.8 grease life ratio 3 needle roller bearings with double-row thrust needle roller ... bearings axn series needle roller bearings with double-row thrust cylindrical ... roller bearings arn series axn and arn type bearings ... roller or thrust cylindrical roller bearings on both sides of a radial needle roller ... |
Ball Screw Support Bearings by NTN Corporation JapanView 2 Pages ntn ball bearing deep groove by NTN Corporation Japan [Page 4] - ntn ball screw support bearings 2 fretting resistance test rolling ... the decrease in the weight of the bearing plate after the test is shown in fig 13 ... oil fig 13.7 table 13.5 test conditions bearing mm radial load kn shaft speed min-1 ... temperature °c evaluated with deep groove ball bearing 6206 30 62 16 6.86 2000 ... test rolling table 13.4 test conditions bearing mm load kn max contact surface pressure ... temperature evaluated with thrust ball bearing 51204 20 40 14 2.5 1700 8 30 12 grease ... 0.4 0.2 0 wear 1/10 1 conventional type bearing plate suj2 lithium base general purpose ... grease 2 ultage series bearing plate suj2 with special heat treatment ... special grease 1 conventional type bearing plate suj2 lithium base general purpose ... grease 2 ultage series bearing plate suj2 with special heat treatment ... [Page 5] - ntn ball screw support bearings 4 grease life test service life of the ... seal type 2 duplex angular contact ball bearings ht series ht type duplex ... angular contact ball bearings feature larger axial load capacity ... as a standard angular contact ball bearing contact angle 30° bearings smaller ... products table 13.6 test conditions bearing mm radial load n axial load n shaft ... temperature °c evaluated with deep groove ball bearing 6204 20 47 14 67 67 10000 ... 13.8 grease life ratio 3 needle roller bearings with double-row thrust needle roller ... bearings axn series needle roller bearings with double-row thrust cylindrical ... roller bearings arn series axn and arn type bearings ... roller or thrust cylindrical roller bearings on both sides of a radial needle roller ... |
Ball Bearings Shield and Seal Types by NTN Corporation JapanView 1 Page ntn ball bearing deep groove by NTN Corporation Japan [Page 6] - ntn ball bearings shield and seal types 3 service life of ... applies to high-quality grease used in ball bearings under normal operating ... use the value for zz or llb even if the bearings of llu specifications divide cr by the ... this point b the bore diameter d of the bearing is 30 find this value on scale and ... this is the expected grease life of the bearing which is what we were looking for ... is used to obtain the grease life of deep groove ball bearing 6206zz at a radial ... standard load rating cr for a 6206zz bearings is 19500 n and the fl 0.7 n /n 20 1.0 ... 6 7 8 cr/pr 9 10 11 life of grease hrs bearing bore d mm 200 100 50 40 30 20 10 30 ... coefficient fl as a function of bearing load cr/pr a c 5.0 4.0 20 000 15 000 10 ... dimension working speed r/min note that ntn can also manufacture shield and seal ... |
Bearing for Mining Application by NTN Corporation JapanView 1 Page ntn ball bearing deep groove by NTN Corporation Japan [Page 13] - ntn mining application mining crushing ... transfer processing cat no 3022/e bearings with solid grease features solid ... grease does not easily leak from the bearing even when the bearing is subjected to ... it is less likely to leak out of the bearing during operation temperature rise and/ ... eliminating grease leakage from the bearing ensures a consistent supply of ... environment 2 superior lubrication bearings with solid grease resist grease leakage ... prolonging bearing life in applications where high ... to water also extending both grease and bearing life 3 sealing effect though solid ... grease protects a bearing against ingress of foreign matters ... the use of contact type rubber seals deep groove ball bearings bearing units or ... other seals other bearing types solid grease lubrication solid ... |
