Catalog: Precision Rolling Bearings | |
| precision rolling bearings page technical data contents 1 ... classification of precision rolling bearings for machine tools q main spindle ... bearings w ball screw support bearings 2 4 2 4 15 5 7 11 14 21 16 20 21 26 22 ... 32 33 37 38 47 40 41 47 53 48 48 50 1 2 bearing selection and shaft housing design q ... bearing selection w bearing accuracy e bearings and rigidity r designing bearing and ... housing 5 3 load rating and life q bearing life w static load rating and allowable ... axial load 16 4 allowable speed 5 bearing arrangements and structures of bearings ... for main spindles qwerqwertyuio bearing arrangement for main spindles bearing ... selection based on bearing arrangement for main spindle adjustable ... preload bearing unit bearing jacket cooling system 22 6 handling of ... | |
| 1 classification of precision rolling bearings for machine tools 1 main spindle ... bearings table .1 types of precision rolling ... bearings for machine tools bearing type standard cross section bearing ... u 72c high-speed 2la-hse9 5s-2la-hse9 bearing bore mm contact angle remarks ¡a ... bearing type code containing a suffix u means ... an ultage series bearing optimized interior structure and resin ... with bore diameter of 10 to 130 mm ¡bearings with prefix 5s have ceramic balls ¡ ... ultage series ¡use of special material and ... higher speed rigidity and reliability ¡bearings with prefix 5s have ceramic balls ¡ ... ultage series ¡maintaining the advantages of hse type ... higher speed and limited heat buildup ¡bearings with prefix 5s have ceramic balls ¡ ... ultage series ¡these bearings are identical to the hse and hsf types ... | |
| technical data bearing type standard cross section bearing ... type bearing bore mm contact angle remarks ¡the ... highspeed single-row cylindrical roller bearing are the same as those of the n10k only ... the bearing clearance is non-interchangeable ¡a ... 5s-n10 is available on request ¡ultage series ¡optimized internal design allows ... high-speed cylindrical roller bearing n10hsk ¡ultage series ¡this is a ... -friendly single-row cylindrical roller bearing 240 241 n10hsl k 55 100 plug gage ta 30 ... n10-hsk single-row cylindrical roller bearing and nn30k double-row cylindrical roller ... bearing 242 plug gage ring gage ring gage tb ... n10-hsrk single-row cylindrical roller bearing and nn30k nn30hsk double-row ... cylindrical roller bearing 243 adjustable preload bearing unit ... | |
| technical data 2 ball screw support bearings bearing type cross section bearing type ... -contact angular contact thrust ball bearing for ball screws sealed type bearing ... bore mm contact angle remarks ¡ultage series ¡surface modification treatment on the ... bearing ring raceways has led to a longer ... bearing life and much improved fretting ... grease the sealed type boasts a longer bearing life and simpler maintenance work ¡all ... 40 30 ¡the allowable axial load of this bearing type is greater owing to the improved ... design 292 293 angular contact ball bearing for ball screws ¡a clearance remains ... between the inner ring of radial bearing and the inner rings of both thrust ... bearings allowing the user to determine the ... based on the starting torque ¡the bearing clearance on certain preloaded bearings ... | |
| technical data 2 bearing accuracy bearing accuracy accuracies of rolling bearings ... and running accuracy of rolling bearings are defined by applicable iso standards ... and jis b 1514 standard rolling bearings tolerances tables 2.4 and 2.5 the ... that must be satisfied when mounting a bearing to a shaft or housing while the running ... run-out occurring when rotating a bearing by one revolution methods for measuring ... the accuracy of rolling bearings optional methods are described in jis b ... 1515 measuring methods for rolling bearings table 2.6 summarizes some typical ... measuring running accuracy of rolling bearings table 2.4 bearing types and applicable ... tolerance bearing type angular contact ball bearings ... roller bearigns needle roller bearings metric tapered roller bearings inch j ... | |
| shaft and housing in designing a bearing and housing it is very important to ... a sufficient shoulder height for the bearing and housing so as to maintain bearing ... and to avoid interference with the bearing related corner radius the chamfer ... and housing are listed in table 2.11 bearing corner radius dimensions side face of ... bore diameter face rs min or r1s min of bearing or outer rs max or r1s max diameter ... face of bearing axial direction fig 2.15 table 2.10 ... allowable critical-value of bearing chamfer 1 radial bearings except ... tapered roller bearings unit mm 2 metric tapered roller ... bearings unit mm 3 thrust bearings unit mm rs min1 or r1s min 0.05 0.08 0. ... r1s min 0.3 nominal bore3 diameter of bearing d or nominal outside diameter d rs ... note this standard will be applied to bearings whose dimensional series refer to the ... | |
| technical data new bearing life formula by dramatic improvement in ... bearing materials and bearing manufacturing techniques bearings can ... this finding was obtained by a series of experiments performed by ntn ntn s ... new bearing life calculation theory is based on a ... and efficient lubrication conditions bearing life can be indefinite at a particular ... if foreign matter enters into a bearing depending on the size and amount of ... foreign matter the actual life of that bearing can be much shorter than the rating ... conditions can cause the actual bearing life to be shorter than the rating life ... ntn s new bearing life calculation is designed to ... according to l-p theory lnm a1 antn 3.8 bearing life theory 1 conventional lundberg- ... theory 1 r n s where sneo 2 ntn s new bearing life theory while the l-p theory ... | |
| technical data 2 bearing selection based on bearing arrangement ... for main spindle an optimal bearing product that best suits the application ... is selected by referring to the bearing selection table in table 5.2 which ... contains the possible bearing arrangements for main spindles ¡ ... free side and fixed side ¡select the bearing arrangement type i to xii on the free ... or fixed side table 5.2 bearing selection table fix side free side ... lubrication bearing specifications system applicable ... 2la-hse0/5s-2la-hse0 ¡select a set of bearing specifications applicable to the ... system suitable for the selected bearing specifications ¡select a product group ... considerations for selection procedure bearing selection 1 high-speed performance ... sealed duplex angular contact ball bearing or adjustable preload bearing mechanism ... | |
| speed varies with the type and size of bearing for a highspeed angular contact ball ... bearing the dmn value should be 1.4 106 as a ... amount of grease required usually a bearing for the main spindle of a machine tool ... of grease used for a main spindle bearing is given below ¡angular contact ball ... bearing dmn value 650 103 15 of bearing free space dmn value 650 103 12 of ... bearing free space ¡cylindrical roller bearing 10 of bearing free space ¡tapered ... roller bearing 15 of bearing free space the space in the bearing ... dimension table before filling a bearing with grease remove the rustproof ... coating from the bearing with clean wash oil and allow the ... bearing to dry completely then fill and ... an appropriate amount of grease in the bearing with an syringe plastic bag etc grease ... | |
| 8 new technologies 1 the new ultage series of super 2 new material and new surface ... high-speed precision bearings for machine tool main spindles ntn has ... machine tools by developing the ultage series of super-high-speed precision bearings ... this new line of bearings demonstrates excellent performance ... realize the ultimate level of precision bearing design modification technology the ... ultage super high-speed precision bearing series for machine tool main spindles ... to offer a super high-speed precision bearing that offers excellent reliability while ... material no flaking design the internal bearing design has been optimized to cope with ... conjunction with our proven precision bearing technology will help 48 the rolling ... | |
| in fig 8.5 test conditions test bearing preload lubrication outer casing ... technology the eco-friendly ultage series is available in two specifications an ... capable of higherspeed operation basic bearing number hse020 100 150 24 2 rows 2.5 kn ... required functions for the main spindle bearing speed rigidity durability precision eco ... n10hsl type dmn valu 106 the ultage series bearings employ well-proven ceramic ... | |
| -lubricated sealed angular contact ball bearings 1 ease of handling ultage angular ... contact ball bearings with seals are grease-prefilled ... bearings no grease filling is necessary you need ... which also makes it easy to orient the bearings in combinations table 8.1 table 8.1 ... bearing combinations and seal colors db set ... simplified spindle structure the ultage series sealed angular contact ball bearing ... | |
| air-oil lubricated angular contact ball bearings and cylindrical roller bearings when ... air-oil lubricated angular contact ball bearing hsl/hsfl series or cylindrical roller ... bearing n10hsl[k series can reduce the emissions of oil mist ... the eco-friendly air-oil lubricated bearing does not spray compressed air from the ... ring to supply lubricating oil into the bearing for this reason this type of bearing ... emitted from the conventional standard bearing and that emitted from the eco-friendly ... bearing the lubricating oil discharged with air ... passes through the inside of the bearing and is then exhausted as a large volume ... the lubricating oil exhausted from the bearing in the mist state is collected through ... machine adoption of the eco-friendly bearing therefore improves the working ... | |
| ntn main spindle bearings 9 angular contact ball bearings for ... radial loads angular contact ball bearings for radial loads used in machine tools ... are bearings which inner and outer rings cannot be ... separated this type of bearing includes series 78 79u 70u 72 hse9 hse0 bns9 bns0 bnt9 ... bnt0 and bnt2 for angular contact ball bearings an imaginary straight line connecting ... angle high-speed angular contact ball bearings hse type high-speed angular contact ... bearings are available in two types hse9 and ... hse0 the boundary dimensions of this bearing series are determined according to the ... jis dimension series 9 0 and three types of contact angles ... and 25° d the accuracy of this ball bearing series is jis class 5 or better and the ... of the standard angular contact ball bearing in order to accommodate high speeds the ... | |
| ntn main spindle bearings eco-friendly air-oil lubricated angular ... ball bearings hsl and hsfl types for eco-friendly air ... -oil lubricated angular contact ball bearings hsl and hsfl types the angle of the ... in addition these angular contact ball bearings are dedicated to airoil lubrication by ... air and oil the accuracies of these bearing types are jis class 5 or better for the ... designed eco-friendly nozzle sealed bearings standard grease-lubricated sealed ... angular contact ball bearings 79llb/70llb types the standard grease- ... lubricated sealed angular contact ball bearings are available in 79 and 70 series non- ... grease is used as a result these bearings accommodate high speed offer prolonged ... a comfortable working environment these bearings are available in contact angles of 15° ... | |
| ntn main spindle bearings 2 standard cage design table 9.1 ... standard cages of angular contact ball bearings for radial loads bearing series 78c 79u ... information contact ntn engineering 3 bearing designations 78 79 70 72 bnt type 5s 7 ... angle code c 15° ad 25° no symbol 20° bearing series ultage series bore diameter code ... see dimension table dimension series code bearing type material code 5s ... | |
| ntn main spindle bearings hse type 5s 2la-hse 0 20 t2 ad db /gl ... code see dimension table dimension series code bearing type 2la special material ... /gl p4 +tkz spacer code located beside bearings spacer code located between bearings ... spacer width dimension bearing type notes hsl bearing series code xxdn ... eco friendly nozzle located between bearings tkz eco-friendly nozzle or spacer with ... eco friendly nozzle located beside bearings 79cd ad 70cd ad type 5s 7006 cd llb db ... class 4 running accuracy jis class 2 bearing type ultage series cd contact angle 15 ... non-contact rubber seal on both sides bearing type 59 ... | |
| ntn main spindle bearings 4 bearing accuracy table 9.2 inner rings nominal ... variation runout vdmp vdp kia diameter series 9 diameter series 0 2 class 5 class 4 ... dmp this applies to the diameter series 0 or 2 for class 4 and all the diameter ... series for class 2 2 applicable to individual ... bearing rings manufactured for duplex bearings table 9.3 outer rings nominal outside ... variation runout vdp vdmp kea diameter series 9 diameter series 0 2 class 5 class 4 ... dmp this applies to the diameter series 0 or 2 for class 4 and all the diameter ... series for class 2 60 ... | |
| ntn main spindle bearings table 9.6 standard angular contact ball ... bearings 79 series nominal bore diameter d 10 12 15 17 20 ... | |
| ntn main spindle bearings table 9.7 standard angular contact ball ... bearings 70 series nominal bore diameter d 10 12 15 17 20 ... table 9.8 standard angular contact ball bearings 72c series unit n nominal bore diameter ... | |
| ntn main spindle bearings table 9.9 high-speed angular contact ... ball bearings hse9 series nominal bore diameter d 50 55 60 65 70 ... 9.10 high-speed angular contact ball bearings hse0 series nominal bore diameter d 50 ... | |
| ntn main spindle bearings table 9.11 eco-friendly air-oil ... lubricated angular contact ball bearings hsl9 series nominal bore diameter d 50 ... air-oil lubricated angular contact ball bearings hsl0 series nominal bore diameter d 50 ... -lubricated sealed angular contact ball bearings 79cd and ad series unit n nominal bore ... -lubricated sealed angular contact ball bearings 70cd and ad series unit n nominal bore ... | |
| ntn main spindle bearings table 9.15 high-speed grease-lubricated ... sealed angular contact ball bearings bns9 series nominal bore diameter d 50 ... -lubricated sealed angular contact ball bearings bns0 series nominal bore diameter d 45 ... high-speed sealed angular contact ball bearings bnt9 series unit n nominal bore ... high-speed sealed angular contact ball bearings bnt0 series unit n nominal bore ... high-speed sealed angular contact ball bearings bnt2 series unit n nominal bore ... | |
| ntn main spindle bearings 8 duplex arrangement codes for angular ... contact ball bearings each duplex ball bearing has a product number and duplex ... its side face on angular contact ball bearing sets of three or more each matching ... bearing has a mark on its outside surface ... align the mark when assembling the bearings note that duplex angular contact ball ... bearing types db and df do not have the mark ... universal matching angular contact ball bearings are often combined for a special ... rows of two or more when combining many bearings it is important to control the ... accuracies of the bearings and to align their face heights in a ... but it is possible only if the combined bearings have the same clearance/preload symbols ... technique is employed for standard bnt series 0 series and 2 series bearings designed ... | |
| ntn main spindle bearings !3 standard angular contact ball ... bearings 79u and 70u types ultage 79u and 70u ... series bearings were developed from standard angular ... contact ball bearings 79 and 70 optimized internal design ... grease lubrication test conditions test bearing shaft speed preload after assembled ... of oil for air-oil lubrication 3 bearings are available with either steel or ... jacket cooling w/o jacket cooling 10 5 bearing specifications air-oil 0 5000 10000 ... -oil lubrication test conditions tested bearing 7010ucdb 50 80 16 2 rows speed 0 23000 ... 5s-79u notes permissible speed of each bearing dmn value varies depending on the ... of the machine on which the bearing is used motor drive system cooling ... system and construction around the bearing consider the optimal choice referring ... | |
| ntn main spindle bearings !5 super high-speed angular contact ... ball bearings hsf type the hsf type realizes further ... rise super high-speed 5s-hsf series angular contact ball bearings utilize ... balls than those of the highspeed hse series this reduces heating due to centrifugal ... -speed operation test condition test bearing shaft speed lubrication oil consumption ... oil shot intervals 5 min 40nl/min none bearing specification temperature rise of outer ... notes permissible speed of each bearing dmn value varies depending on the ... of the machine on which the bearing is used motor drive system cooling ... system and construction around the bearing consider the optimal choice referring ... | |
| main spindle bearings !9 dimension tables for angular contact ... ball bearings standard angular contact ball bearings ... steel ball type 78 series contact angle 15° d 25 170mm brrdd1 r1 ... | |
| main spindle bearings standard angular contact ball bearings ... steel ball type 79 series contact angle 15° d 10 170mm brrdd1 d2 ... | |
| main spindle bearings standard angular contact ball bearings ... steel ball type 79 series contact angle 25° d 10 130mm b r1 rrdd1 ... | |
| main spindle bearings standard angular contact ball bearings ... steel ball type 79 series contact angle 30° d 10 170mm brrdd1 d2 ... | |
| main spindle bearings standard angular contact ball bearings ... steel ball type 70 series contact angle 15° d 10 200mm brrdd1 d2 ... | |
| main spindle bearings standard angular contact ball bearings ... steel ball type 70 series contact angle 25° d 10 130mm b r1 rrdd1 ... | |
| main spindle bearings standard angular contact ball bearings ... steel ball type 70 series contact angle 30° d 10 130mm b r1 rrdd1 ... | |
| main spindle bearings standard angular contact ball bearings ... steel ball type 72 series contact angle 15° d 10 130mm brrdd1 r1 ... | |
| main spindle bearings standard angular contact ball bearings ... ceramic ball type 5s-79 series contact angle 15° d 10 130mm b r1 rrdd1 ... | |
| main spindle bearings standard angular contact ball bearings ... contact angle 25° d 10 130mm b r1 5s-79 series rrdd1 d2 r d d1 d2 a part number ... | |
| main spindle bearings standard angular contact ball bearings ... contact angle 30° d 10 130mm b r1 5s-79 series rrdd1 d2 r d d1 d2 a part number ... | |
| main spindle bearings standard angular contact ball bearings ... contact angle 15° d 10 130mm b r1 5s-70 series rrdd1 d2 r d d1 d2 a part number ... | |
| main spindle bearings standard angular contact ball bearings ... contact angle 25° d 10 130mm b r1 5s-70 series rrdd1 d2 r d d1 d2 a part number ... | |
| main spindle bearings standard angular contact ball bearings ... contact angle 30° d 10 130mm b r1 5s-70 series rrdd1 d2 r d d1 d2 a part number ... | |
| main spindle bearings high-speed angular contact ball ... bearings steel ball type 2la-hse9 series contact angle 15° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings steel ball type 2la hse9 series contact angle 20° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings steel ball type 2la hse9 series contact angle 25° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings steel ball type 2la-hse0 series contact angle 15° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings steel ball type 2la-hse0 series contact angle 20° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings steel ball type 2la-hse0 series contact angle 25° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings ceramic ball type 5s-2la-hse9 series contact angle 15° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings ceramic ball type 5s-2la-hse9 series contact angle 20° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings ceramic ball type 5s-2la-hse9 series contact angle 25° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings ceramic ball type 5s-2la-hse0 series contact angle 15° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings ceramic ball type 5s 2la hse0 series contact angle 20° d 50 170mm b r r1 r1 ... | |
| main spindle bearings high-speed angular contact ball ... bearings ceramic ball type 5s-2la-hse0 series contact angle 25° d 50 170mm b r r1 r1 ... | |
| main spindle bearings super high-speed angular contact ball ... bearings 5s-2la-hsf0 series contact angle 25° d 50 100mm b r1 r r ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings steel ball type 2la-hsl9 series contact angle 15° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings steel ball type 2la-hsl9 series contact angle 20° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings steel ball type 2la-hsl9 series contact angle 25° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings steel ball type 2la-hsl0 series contact angle 15° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings steel ball type 2la-hsl0 series contact angle 20° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings steel ball type 2la-hsl0 series contact angle 25° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings ceramic ball type 5s-2la-hsl9 series contact angle 15° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings ceramic ball type 5s-2la-hsl9 series contact angle 20° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings ceramic ball type 5s-2la-hsl9 series contact angle 25° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings ceramic ball type 5s-2la-hsl0 series contact angle 15° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings ceramic ball type 5s-2la-hsl0 series contact angle 20° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings ceramic ball type 5s-2la-hsl0 series contact angle 25° d 50 130mm b r r1 r1 ... | |
| main spindle bearings eco-friendly angular contact ball ... bearings ceramic ball type 5s-2la-hsfl0 series contact angle 25° d 50 100mm b r r1 r1 ... | |
| main spindle bearings sealed standard angular contact ball ... bearings steel ball type 79 llb series contact angle 15° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed standard angular contact ball ... bearings steel ball type 79 llb series contact angle 25° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed standard angular contact ball ... bearings steel ball type 70 llb series contact angle 15° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed standard angular contact ball ... bearings steel ball type 70 llb series contact angle 25° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed standard angular contact ball ... bearings ceramic ball type 5s-79 llb series contact angle 15° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed standard angular contact ball ... bearings ceramic ball type 5s-79 llb series contact angle 25° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed standard angular contact ball ... bearings ceramic ball type 5s-70 llb series contact angle 15° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed standard angular contact ball ... bearings ceramic ball type 5s-70 llb series contact angle 25° d 10 50mm brrr1 r d ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings steel ball type 2la-bns9 llb series contact angle 15° d 50 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings steel ball type 2la-bns9 llb series contact angle 20° d 50 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings steel ball type 2la-bns9 llb series contact angle 25° d 50 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings steel ball type 2la-bns0 llb series contact angle 15° d 45 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings steel ball type 2la-bns0 llb series contact angle 20° d 45 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings steel ball type 2la-bns0 llb series contact angle 25° d 45 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings ceramic ball type 5s-2la-bns9 llb ... series contact angle 15° d 50 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings ceramic ball type 5s-2la-bns9 llb ... series contact angle 20° d 50 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings ceramic ball type 5s-2la-bns9 llb ... series contact angle 25° d 50 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings ceramic ball type 5s-2la-bns0 llb ... series contact angle 15° d 45 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings ceramic ball type 5s-2la-bns0 llb ... series contact angle 20° d 45 100mm b r r1 ... | |
| main spindle bearings sealed high-speed angular contact ball ... bearings ceramic ball type 5s-2la-bns0 llb ... series contact angle 25° d 45 100mm b r r1 ... | |
| main spindle bearings angular contact ball bearings for ... motors and lathes steel ball type bnt9 series contact angle 15° d 10 65mm b r r1 d d1 ... | |
| main spindle bearings angular contact ball bearings for ... motors and lathes steel ball type bnt0 series contact angle 15° d 10 70mm b r r1 d d1 ... | |
| main spindle bearings angular contact ball bearings for ... motors and lathes steel ball type bnt2 series contact angle 15° d 10 80mm b r r1 d d1 ... | |
| main spindle bearings angular contact ball bearings for ... and lathes ceramic ball type 5s-bnt9 series contact angle 15° d 10 65mm b r r1 d d1 ... | |
| main spindle bearings angular contact ball bearings for ... and lathes ceramic ball type 5s-bnt0 series contact angle 15° d 10 70mm b r r1 d d1 ... | |
| main spindle bearings angular contact ball bearings for ... and lathes ceramic ball type 5s-bnt2 series contact angle 15° d 10 80mm b r r1 d d1 ... | |
| ntn main spindle bearings 10 cylindrical roller bearings in a ... cylindrical roller bearing the rollers and raceways are in linear ... contact consequently this type of bearing can support a larger radial load than a ... point-contact ball bearing also its structure is suitable for high ... -speed operation a cylindrical roller bearing used for the main spindle of a machine ... 2 single-row cylindrical roller bearings single-row cylindrical roller bearings ... highspeed n10hsrt6 type the n10hs type bearings have high-strength machined brass cages ... while the n10hsr type bearings have special molded resin cages which ... from the high-speed n10hsrt6 type bearing and can be used with air-oil ... only 1 double-row cylindrical roller bearings double-row cylindrical roller bearings ... in two types nn and nnu and two series 30 and 49 the rollers in the nn type ... | |
| ntn main spindle bearings 3 bearing designations nn49 30 nnu49 type nn 30 ... high speed specification dimension series code bearing type code nn double row ... hsr ultra high speed specification bearing type code n single row with ribbed ... main spindle refer to 6 handling of bearings 8tapered bore cylindrical roller ... bearing and main spindle taper angle in the ... table 10.1 tolerance of taper-bored bearings unit d over 18 30 50 80 120 180 250 315 ... | |
| ntn main spindle bearings 5 accuracy of cylindrical roller ... bearings table 10.2 inner rings nominal bore ... low vdp vdmp kia over incl diameter series 9 diameter series 0 class 5 class 4 ... class 4 class 2 max over incl diameter series 9 diameter series 0 class 5 class 4 ... | |
| ntn main spindle bearings 9 ultra high speed double row ... cylindrical roller bearings nn30hsrt6 type nn30hsrt6 ultra high ... speed double row cylindrical roller bearings have higher operating speed with the ... and capacity as the conventional series bearing design features 1 optimized ... notes permissible speed of each bearing dmn value varies depending on the ... of the machine for which the bearing is used motor drive system cooling ... system and construction around the bearing consider the optimal choice referring ... | |
| main spindle bearings ultra high-speed single row cylindrical ... roller bearings ultage series d 55 100mm b r1 b r1 r ew d d ew d d ... | |
| ntn main spindle bearings 11 angular contact ball bearings for ... types ntn provides a range of thrust bearings for the main spindles this includes ... 5629 and 5620 series for high axial rigidity contact angle ... 60° and hta ua series high-speed duplex angular contact ball ... bearings for axial loads with optimized internal ... design contact angle 40° 30° these bearings are used in conjunction with nn30 nn49 ... or nnu49 series double-row cylindrical roller bearings ... matched bearings must have the same bore and outside ... 11.1 types of angular contact ball bearings for axial loads 5629 and 5620 series ... hta0u a db hta9u a db series bearing type initial contact angle cage ... high-strength machined brass cage these series can withstand axial loads in both ... is enhanced the structure of these bearings limits them to grease-lubricated ... | |
| ntn main spindle bearings 2 standard cage types table 11.2 ... standard cage of angular contact ball bearing for axial loads bearing series 5629 ... for details contact ntn engineering 3 bearing designations 562 0 20m gn p4 tolerance ... type ex 562020 103 mm bore dimension series code bearing type 5s hta 0 20 u a t2 ... contact angle code no code 40° a 30° bearing series ultage nominal bore diameter see ... the dimensions tables dimension series code bearing type material code 5s ... of rolling element is ceramics no code bearing steel 249 ... | |
| ntn main spindle bearings 12 tapered roller bearings 2 bearing ... designations tapered roller bearings are designed so that the apexes of the ... are located at a common point on the bearing center line accordingly the rollers ... inner ring and outer ring raceways this bearing is suitable for handling a radial load ... in general the cage of a tapered roller bearing is a punched steel plate type if p4 or ... modification code nominal bore diameter bearing series code 1 load calculation tapered ... roller bearings are generally used in pairs so their ... according to table 12.1 table 12.1 bearing arrangement and equivalent load bearing ... y1 note 1 the above are valid when the bearing internal clearance and preload are zero ... | |
