Catalog: Precision Rolling Bearings | |
| 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 ˇa ... 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 ˇbearings with prefix 5s have ceramic balls ˇ ... higher speed rigidity and reliability ˇbearings with prefix 5s have ceramic balls ˇ ... this type has small diameter ceramic balls to achieve higher speed and limited ... heat buildup ˇbearings with prefix 5s have ceramic balls ˇ ... ultage series ˇthese bearings are identical to the hse and hsf types ... | |
| technical data table 2.2 bearing selection procedure user s requirements ... main spindle size lubrication system ng bearing size consideration of allowable dmn ... drive-up of front cover estimation of bearing internal preload at maximum speed and ... consideration of bearing initial clearance according to ntn s ... bearing selection guideline finalization of ... bearing specifications consideration of ... rigidity of bearing and main spindle consideration of ... bearing life ok finalization of main spindle ... in selecting an optimal main spindle bearing for machine tool are summarized in ... 2.3 table 2.3 selection procedure for bearings for main spindles of machine tools 1 ... etc #30 #40 #50 etc d1 d2 d3 d4 bearing type/bearing number fr1 fr 4 shape and ... -related dimensions example 5 intended bearing type bearing size and preloading method ... | |
| technical data 5 bearing arrangements and structures of bearings ... for main spindles 1 bearing arrangement for main spindles typical ... examples of bearing arrangements for main spindles of ... are summarized in table 5.1 an optimal bearing arrangement must be determined through ... tool models incorporate built-in motor type main spindles however heat ... generation on a built-in motor can affect the accuracy of the main ... of lubricant so a main spindle bearing should be selected very carefully table ... 5.1 typical examples of bearing arrangements for main spindles bearing ... arrangement for main spindle bearing type typical applications [type ... tapered roller bearing tapered roller bearing double-row cylindrical roller bearing ... [type double-row cylindrical roller bearing double-direction angular contract ... | |
| technical data bearing arrangement for main spindle bearing ... [type single-row cylindrical roller bearing high-speed duplex angular contact ball ... bearing for axial load single-row cylindrical ... roller bearing typical applications cnc turning ... ˇair-oil lubrication built-in motor-driven configuration note high-speed variant ... of type [type duplex angular contact ball bearing dtbt arrangement single-row ... angular contact roller bearing w ball slide machining center | |
| 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 ˇ ... free side and fixed side ˇselect 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 ... product groups/ultage steel balls/ceramic balls 15° 25° 79 llb/5s-79 llb ... 2la-hse0/5s-2la-hse0 ˇselect a set of bearing specifications applicable to the ... system suitable for the selected bearing specifications ˇselect a product group ... considerations for selection procedure bearing selection 1 high-speed performance ... | |
| technical data 4 bearing jacket cooling system with a built-in ... motor drive system the main spindle is ... directly driven by a motor and is therefore suitable for rapid ... the unit if heat generated by the motor affects the bearing overheating of the ... bearing as well as degradation of the grease ... about cooling of jacket a typical bearing arrangement is shown in fig 5.4 and 5.5 ... a double-row cylindrical roller bearing and an angular contact ball bearing set ... an area above the angular contact ball bearings and does not cool the double-row ... cylindrical roller bearing effectively note that the fit of the ... angular contact ball bearings with the bore of the housing is a ... clearance fit-the bearings are not in direct contact with the ... above the double-row cylindrical roller bearing and cools both the angular contact ball ... | |
| ntn main spindle bearings main spindle bearings 9 angular contact ball bearings for ... radial loads contents 9 angular contact ball bearings for radial loads 56 213 q ... types 56 w standard cage design 58 e bearing designations 58 r bearing accuracy 60 t ... preload of duplex angular contact ball bearings 62 y recommended fit for angular ... contact ball bearings 68 u duplex angular contact ball ... bearings 68 i duplex arrangement codes of duplex ... angular contact ball bearings 69 o flush grinding and universal ... matching 69 !0 angular contact ball bearings with ceramic balls 70 !1 operating life ... of bearings with ceramic balls 71 !2 recommended lubrication ... 72 !3 standard angular contact ball bearings 79u and 70u types 73 !4 high-speed ... | |
| 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 ... types in addition these angular contact ball bearings are dedicated to airoil ... 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 6 recommended fit for angular contact ... ball bearings if the dmn value is in the range of dmn ... to ensure high accuracies of precision bearings if the dmn value is in the range of dmn ... such as heat buildup on a built-in motor or the cooling effect of jacket for ... engineering 7 duplex angular contact ball bearings duplex angular contact ball ... bearings can be combined in rows of two three or ... four bearings to accommodate required specifications ... load and large axial load but this bearing can take the axial load in one ... for this reason this type of duplex bearing is commonly used for the main spindles ... centers each duplex angular contact ball bearing is manufactured as a set to ... for this reason combine only duplex bearings of the same product number table 9.20 ... | |
| 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 ... ceramic balls 4 three contact angles 15° 20° and 30° ... 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 ... | |
| ntn main spindle bearings !4 high-speed angular contact ball ... bearings hse type the hse type employs a special ... speeds fig 9.24 test condition test bearing shaft speed lubrication oil consumption ... -speed operation and high rigidity 3 bearings are available with either steel or ... ceramic balls 4 three contact angles 15° 20° and 25° ... -1 0 0.5 1.0 1.5 dmn value 106 2.0 2.5 bearing specification air oil fig 9.24 ... 1.9 times greater than a conventional bearing fig 9.25 test condition test bearing ... of rigidity relative to conventional bearing hsb type in terms of post-assembly ... 15° 20° 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 ... by adoption of smaller diameter ceramic balls while retaining features of the hse ... -speed 5s-hsf series angular contact ball bearings utilize smaller balls than ... operation and high rigidity 3 ceramic balls are used 4 initial contact angle is set ... -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 ... | |
| ntn main spindle bearings !6 eco-friendly air-oil lubricated ... angular contact ball bearings the hsl/hsfl type is an advanced ... hsl type hsfl type patent pending bearing specification air-oil air-oil eco- ... better than the conventional type 2 bearings are available with either steel or ... ceramic balls hsfl is available with ceramic balls ... spacer with the eco-fliendly nozzle the bearing type code hsl represents the bearing ... built-in nozzle for more details see 3 bearing designation fig 9.28 hsl and hsfl ... 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 ... test conditions hsfl type hsf type test bearing shaft speed preload 5s-2la-hsfl020db 5s ... | |
| main spindle bearings angular contact ball bearings for motors and lathes steel ... ball type bnt9 series contact angle 15° d 10 ... | |
| main spindle bearings angular contact ball bearings for motors and lathes steel ... ball type bnt0 series contact angle 15° d 10 ... | |
| main spindle bearings angular contact ball bearings for motors and lathes steel ... ball type bnt2 series contact angle 15° d 10 ... | |
| main spindle bearings angular contact ball bearings for motors and lathes ceramic ... ball type 5s-bnt9 series contact angle 15° d ... | |
| main spindle bearings angular contact ball bearings for motors and lathes ceramic ... ball type 5s-bnt0 series contact angle 15° d ... | |
| main spindle bearings angular contact ball bearings for motors and lathes ceramic ... ball type 5s-bnt2 series contact angle 15° d ... | |
| ntn main spindle bearings !0 ultra high-speed single row ... cylindrical roller bearings n10hsrt6 type n10hsrt6 type cylindrical ... roller bearings have been designed for high-speed ... operation bearing specification 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 ... internal structure the n10hsr type bearings can reliably run at a higher speed with ... type high-speed cylindrical roller bearings can replace angular contact ball ... bearing on the rear side of the main spindle ... arrangement decreases the number of bearing rows two rows to one row and eliminates ... the ball slide mechanism greatly contributing to ... | |
| ntn main spindle bearings 9 angular contact ball bearings for ... hta u type hta u type angular contact ball bearing has a higher limiting speed ... as the conventional hta series bearings design features 1 optimized internal ... nylon cage pocket design where the ball contacts to have higher lubrication ... -hta0 u 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 ... angle of 40° condition for study bearing hta020uadb hta020adb hta020udb hta020db ... 100 150 22.5 2 row condition for study bearing mounted preload hta020uadb hta020adb ... | |
