Catalog: Precision Rolling Bearings | |
| 3 load rating and life 4 allowable speed 5 bearing arrangements and structures ... of bearings for main spindles 6 handling of bearings 7 lubrication of ... ntn roller follower 3 magnetic bearing spindle 4 high precision air spindle 5 ntn ... | |
| bearings for machine tools q main spindle bearings w ball screw support bearings ... 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 ... roller bearing tapered bore and main spindle taper angle running-in operation for ... main spindle bearing 27 7 lubrication of bearings q ... technologies q the new series of super-high-speed precision bearings for machine tool ... main spindles ultage series w new material and new ... | |
| bearings for machine tools 1 main spindle bearings table .1 types of precision ... 78c 79 u 5s-79 u 70 u 5s-70 u 72c high-speed 2la-hse9 5s-2la-hse9 bearing bore mm ... for the interior structure lead to higher speed rigidity and reliability ¡ ... small diameter ceramic balls to achieve higher speed and limited heat buildup ¡ ... -hse0 5s-2la-hse0 170 15° 20° 25° super high-speed 134 135 5s-2la-hsf0 50 100 25° eco- ... 2la-bns9 llb 5s-2la-bns9 llb 50 15° 25° high-speed 178 201 45 non-contact sealed type 2la- ... | |
| machine the area within the machine the spindle specification bearing type lubrication ... life precision rigidity and critical speed etc of the bearing table 2.1 summarizes ... are made to select an optimal main spindle bearing for a machine tool table 2.1 ... of vibration and shock load ¡shaft speed ¡bearing arrangement fixed side ... inner and outer rings ¡rotational speed ¡noise level ¡operating temperature ¡ ... rotational speed ¡lubrication method ¡noise and torque ... rings ¡safety factor so ¡allowable speed ¡allowable axial load items being ... dimensions select bearing tolerances ¡high-speed operation decide bearing grade select ... conditions special environments high or low temperature chemical ¡ ... requirement for high reliability ¡mounting dimensions ¡ ... | |
| and rigidity the rigidity of the main spindle of a machine tool is associated with ... conditions a roller bearing has a higher rigidity than a ball bearing of the ... is disadvantageous in supporting a high-speed shaft shaft rigidity is greater with a ... rolling elements dm [mm multiplied by speed [min-1 must be accordingly greater of ... a larger bearing is disadvantageous for high-speed applications to sum up the rigidity ... are determined to achieve both high speed and high rigidity each type of the ... the rigidity of a bearing built into a spindle directly affects the rigidity of the ... spindle in particular a high degree of rigidity is required of the ... main spindle of a machine tool to ensure adequate ... centrifugal force and as a result its high-speed performance will be degraded ... | |
| varies due to heat generation on the spindle or a change in load the basic preload ... ball bearing is to be used for a high-speed application such as for the main ... spindle of a machine tool determine the optimal ... a is small thus a preloaded bearing has higher rigidity by bearing bearing fa fo outer ... | |
| usually the load exerted on the main spindle of a machine tool is relatively small ... and require special consideration 1 high speed operation 2 heavy preload 3 large ... bearings operating at fixed constant speeds the basic rating life 90 reliability is ... pa thrust bearings -1 n rotational speed min when several bearings are ... | |
| factor values so operating conditions high rotational accuracy necessary normal ... accuracy deterioration permitted low speed heavy loading etc ball bearings roller ... bearings 2 1 0.5 3 1.5 1 4 allowable speed note when vibration and/or shock loads ... axial load can be exerted on a main spindle bearing on a machine tool allowing for ... in the associated dimensions table high bearing speed leads to high temperature ... affect the maximum allowable bearing speed include 1 bearing type 2 bearing size 3 ... shaft housing etc the maximum allowable speeds listed in the bearing dimensions tables ... in the case of grease lubrication these speeds are attainable only when the bearing is ... filled with an adequate amount of high-quality grease as given in table 7.3 the ... in the case of oil lubrication these speeds are attained only by an air-oil ... | |
| and structures of bearings for main spindles 1 bearing arrangement for main spindles ... of bearing arrangements for main spindles of machine tools are summarized in ... the properties required of the main spindle in question maximum speed radial and ... axial rigidities main spindle size required accuracies lubrication ... incorporate built-in motor type main spindles however heat generation on a built-in ... can affect the accuracy of the main spindle and performance of lubricant so a main ... spindle bearing should be selected very ... of bearing arrangements for main spindles bearing arrangement for main spindle ... double-row cylindrical roller bearing high-speed duplex angular contact ball bearing for ... bearing belt-driven configuration note high-speed variant of type [type duplex angular ... | |
| data bearing arrangement for main spindle bearing type [type single-row ... cylindrical roller bearing high-speed duplex angular contact ball bearing for ... -in motor-driven configuration note high-speed variant of type [type duplex angular ... motor-driven configuration note super high-speed variant [type duplex angular contact ... motor-driven configuration note super high-speed variant [type duplex angular contact ... cylindrical roller bearing note super high-speed variant built-in motor-driven ... -in motor-driven configuration note high-rigidity/super high-speed variant machining ... | |
| based on bearing arrangement for main spindle an optimal bearing product that best ... possible bearing arrangements for main spindles ¡designate the free side and fixed side ... selection procedure bearing selection 1 high-speed performance general high low contact ... or or 2 rigidity radial rigidity high low contact angle 15° 20° 25° 30° axial ... rigidity low high contact angle 15° 20° 25° 30° 40° 60° ... -oil lubrication grinding machine main spindle motor shaft series 15° bnt9/5s-bnt9 ... bnt0/5s-bnt0 bnt2/5s-bnt2 super high-speed/dedicated air-oil lubrication series 25 ... -row complex rigidity radial and axial high 4-row medium 3-row low 2-row 3 ... specifications standard main spindle grease high-speed main spindle air- ... | |
| is a steady increase of operating speeds the maximum dmn value pitch circle ... rolling elements dm mm multiplied by speed n min-1 reached by main spindles with ... -oil lubricated lubrication can be as high as 2.5 to 3.8 106 at the same time main ... spindles are requiring increased rigidity ... therefore main spindle bearings must be capable of both high- ... speed operation and high rigidity this can be achieved through ... usually employed to satisfy both these high speed and high rigidity requirements a ... spindle unit with fixed-position preload that ... is adjustable for different speed conditions is advantageous for ... adjustable preload bearing unit is a highspeed high-rigidity unit that features fixed ... that can be adjusted for different speed conditions the ntn adjustable preload ... | |
| as well as lubricant leakage the main spindle of a machine tool usually uses an ... features of various lubrication methods high high table 7.2 evaluation of various ... rolling elements [mm multiplied by speed [min-1 a further increase in oil volume ... | |
| with this lubricating system a high-speed jet of lubricant is injected into the ... and is typically used on the main spindle bearings of jet engines and gas ... as a lubricating system for the main spindle of a machine tool it can minimize the ... a powerful motor to drive the main spindle low viscosity oil 2-3 mm2/s is used fig ... air 75 nl/min 0 5 10 15 20 103 min-1 speed 10 0 dmn value 5 10 15 20 103 min-1 ... speed fig 7.10 comparison of power loss with ... | |
| of super 2 new material and new surface high-speed precision bearings for machine tool ... main spindles ntn has responded to need for improved ... developing the ultage series of super-high-speed precision bearings this new line of ... technology the ultage super high-speed precision bearing series for machine ... tool main spindles employs a special material that boasts ... /min turbine vg56 oil bath from low-speed heavy-duty machining to high-speed ... concept our ideal is to offer a super high-speed precision bearing that offers excellent ... conditions in order to realize high speed and high rigidity limited temperature ... increase high precision energy saving and low noise ... energy savings precision our super high-precision technology in conjunction with our ... | |
| lubrication system that is capable of higherspeed operation basic bearing number hse020 ... none required functions for the main spindle bearing speed rigidity durability ... steel balls ceramic balls 15000 shaft speed min-1 0 0.5 1 1.5 1.9 for main spindles ... to energy savings grease lubrication high-speed bns llb type standard 70/79ad cd llb ... lubrication system that is capable of high-speed operation reduces the environmental ... | |
| black seal 2 suggestions for simplified spindle structure the ultage series sealed ... contact ball bearing makes possible high-speed operation with grease lubrication ... minimal mist splash simplifies main spindle structure and contributes to lower ... grease lubrication simplifies the main spindle structure and reduces both the initial ... | |
| ntn main spindle bearings main spindle bearings 9 angular contact ball ... ball bearings 79u and 70u types 73 !4 high-speed angular contact ball bearings hse type ... 74 !5 super high-speed angular contact ball bearings hsf type ... angular contact ball bearing 82 high-speed angular contact ball bearings 110 super ... high-speed angular contact ball bearings 134 eco- ... friendly high-speed angular contact ball bearings 136 eco- ... friendly super high-speed angular contact ball bearings 160 ... bearings 162 grease-lubricated sealed high-speed angular contact ball bearings 178 ... | |
| ntn main spindle bearings 9 angular contact ball ... to meet functional requirements such as high speed or high rigidity the available ... 30° no symbol fig 9.1 contact angle high-speed angular contact ball bearings hse type ... high-speed angular contact bearings are available ... ball bearing in order to accommodate high speeds the outer surface of the inner ... and 70u ultage series which accommodate high speed and low temperature rise with ... class 5 or better the features include high speed high rigidity and high load ... ceramic balls hse0 c hse9 c fig 9.3 high-speed angular contact ball bearings ultra- ... high-speed angular ceramic ball bearings hsf type ... the hsf0 type ultra-high-speed angular contact ceramic ball bearing ... system dmn value 2.6 106 in a speed region that was previously possible ... | |
| ntn main spindle bearings eco-friendly air-oil ... nozzle they accommodate the same high speed as hse and hsf types while being more ... as a result these bearings accommodate high speed offer prolonged service life and ... -friendly angular contact ball bearings high-speed grease-lubricated sealed angular ... contact ball bearings bns type high-speed grease-lubricated sealed angular ... with a special grease to achieve high speed capability inhibit temperature rise ... either steel balls or ceramic balls high-speed angular contact ball bearings for ... bnt type the boundary dimensions of high-speed angular ball bearings for grinding ... the features of this bearing are high speed capability and high load capacity this ... or ceramic balls bnt2 bnt0 bnt9 fig 9.6 high-speed angular contact ball bearings for ... | |
| ntn main spindle bearings table 9.9 high-speed angular contact ball bearings hse9 ... 390 1 390 1 960 2 000 2 040 table 9.10 high-speed angular contact ball bearings hse0 ... | |
| ntn main spindle bearings table 9.15 high-speed grease-lubricated sealed angular ... 520 530 550 655 665 685 970 table 9.16 high-speed grease-lubricated sealed angular ... 030 1 040 1 220 1 240 1 270 table 9.17 high-speed sealed angular contact ball bearings ... diameter d contact angle 15° table 9.18 high-speed sealed angular contact ball bearings ... diameter d contact angle 15° table 9.19 high-speed sealed angular contact ball bearings ... | |
| ntn main spindle bearings 6 recommended fit for angular ... diameter across rolling elements [mm n speed [min-1 the fit values shown in tables ... 9.20 and 9.21 are recommended to ensure high accuracies of precision bearings if the ... is preferable for use on the main spindles of machine tools the df arrangement ... duplex type dtbt arrangement ensures high rigidity in the radial and axial ... directions and accommodates high-speed operation for this reason this type of ... bearing is commonly used for the main spindles of machining centers each duplex ... target value 2 if the dmn value of the high-speed machine is in the range of dmn 750 103 ... target value 2 if the dmn value of the high-speed machine or the built-in motor is in the ... | |
| ntn main spindle bearings !0 angular contact ball ... with ceramic balls recently the main spindles of machining centers nc machines and ... have been required to operate at much higher speeds bearings for main spindles ... therefore must meet the requirements of high speed and rigidity as well as accuracy ... limited temperature rise and ultra-high speeds the specific gravity of ceramic ... temperature buildup and ensure ultra-high speed high bearing rigidity for high ... rise bearing tested 2la-hseo16c shaft speed 4000 12000 min-1 lubrication air-oil ... s °c 3.2 0.07 0 4 6 8 min-1 10 12 103 speed fig 9.14 comparison of temperature rise ... | |
| ntn main spindle bearings !3 standard angular contact ... and adoption of a new resin cage allows high-speed operation and ensures high rigidity ... high-speed operation optimized internal design and ... test conditions test bearing shaft speed preload after assembled grease ... 1 optimized internal design enables high-speed operation and high rigidity 2 a new ... air-oil 0 5000 10000 15000 20000 speed min-1 0 dmn value 0.5 106 1.0 fig 9.21 ... high-speed test with grease lubrication stable ... bearing 7010ucdb 50 80 16 2 rows speed 0 23000 min-1 preload after assembled ... cooling 5000 10000 15000 20000 25000 speed min-1 0 dmn value 0.65 106 1.3 photo 9. ... 1 new resin cage fig 9.22 high-speed test with air-oil lubrication ... permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... | |
| ntn main spindle bearings !4 high-speed angular contact ball bearings hse type ... internal design this type achieves high speed high rigidity and high ... rise the 5s-hse type features high speed and limited temperature increase even ... is increased after assembly into the spindle it maintains stable performance at high ... speeds fig 9.24 test condition test bearing ... shaft speed lubrication oil consumption air ... 2 optimized internal design enables high-speed operation and high rigidity 3 bearings ... 1000 n 0 5000 10000 15000 20000 shaft speed min-1 0 0.5 1.0 1.5 dmn value 106 2.0 2 ... and temperature increase improved main spindle rigidity when built into a high-speed ... main spindle the preload of the 5s-hse standard type ... is maintained allowing high rigidity 1.9 times greater than a ... | |
| ntn main spindle bearings !5 super high-speed angular contact ball bearings hsf type ... type realizes further improvement in highspeed running and inhibited temperature rise ... type this type attains dmn values as high as 2.6 million with fixed pressure ... preloading low temperature rise super high-speed 5s-hsf series angular contact ball ... utilize smaller balls than those of the highspeed hse series this reduces heating due to ... 2 optimized internal design enables high-speed operation and high rigidity 3 ceramic ... change in contact angle during super high-speed operation test condition test bearing ... shaft speed lubrication oil consumption air ... air oil 0 5000 10000 15000 20000 shaft speed min-1 0 0.5 1.0 1.5 2.0 2.5 dmn value ... rise fig 9.23 hsf type permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... | |
| ntn main spindle bearings !6 eco-friendly air-oil ... fig 9.28 hsl and hsfl types permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... -pressure preloading notes permissible speed of each bearing dmn value varies ... for technical assistance data 1 in the high-speed region of 10000 min-1 the noise level ... hsfl type hsf type test bearing shaft speed preload 5s-2la-hsfl020db 5s-2la- ... 90 80 70 60 0 5000 10000 15000 20000 speed min-1 0 0.5 1.0 1.5 2.0 2.5 dmn value ... | |
| ntn main spindle bearings data 2 for 5s-hsfl type ... consumption for standard bearings at a speed of 21000 min-1 dmn 2.6 106 fig 9.30 80 ... hsfl type hsf type test bearing shaft speed preload 5s-2la-hsfl020db 5s-2la- ... °c test bearing 70 unstable 60 shaft speed preload oil consumption air consumption ... hsl type bearings can reliably run at a speed of 19000 min-1 fixed position ... -2la-hse020db 100 150 24 2 rows shaft speed 10000 19000 min-1 preload after ... consumption 30 nl/min hse test bearing speed min-1 1.0 1.5 2.0 2.5 dmn value 106 fig ... 9.32 high-speed test results fixed position preloading ... | |
| ntn main spindle bearings !7 grease-lubricated sealed ... bearings that can achieve stable high-speed operation with limited temperature rise ... 1 internal design is optimized for high-speed operation and limited temperature rise ... 79llb and 70llb types simplified main spindle configuration due to the optimized ... and 70llb types can reliably run at a higher speed with grease lubrication the ... and contributes to a simpler main spindle structure reduction in environmental ... grease lubrication simplifies the main spindle structure and reduces the initial and ... | |
| ntn main spindle bearings permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... ° 15° 25° 15° 25° 15° notes permissible speed of each bearing dmn value varies ... engineering for technical assistance high-speed test optimization of the internal ... 30 55 13 2 rows 0 25000 min-1 shaft speed 180 n 5s-7006cdllb pre-load after ... 250 n 5s-7006adllb tested bearing speed min-1 0 0.5 1.0 dmn value 106 fig 9.35 ... high-speed test results 7006cd contact angle 15° ... -7006adllbdbp42 30 55 13 2 rows shaft speed 0 25000 min-1 180 n 5s-7006cdllb pre- ... 250 n 5s-7006adllb tested bearing speed min-1 0 0.5 1.0 dmn value 106 fig 9.36 ... high-speed test results 5s-7006cd contact angle 15 ... | |
| ntn main spindle bearings !8 grease-lubricated sealed ... bearings have excellent performance at higher speeds this helps to reduce pollution ... 2 optimized internal design enables high-speed operation and high rigidity 3 available ... fig 9.37 bns llb type simplified main spindle configuration bns llb type bearings can ... reliably operate at a higher speed with grease lubrication the grease ... oil mist emission can simplify the main spindle structure reduce pollution and decrease ... grease lubrication simplifies the main spindle structure and reduces the initial and ... | |
| ntn main spindle bearings permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... ° 15° 20° 25° 15° 20° notes permissible speed of each bearing dmn value varies ... 20 test conditions test bearing shaft speed outer casing cooling 5s-2la-bns020 ... 5 0 0 2000 4000 6000 8000 10000 12000 speed min-1 0 0.5 1.0 1.5 dmn value 106 fig 9 ... .39 high-speed test results durability test as a ... 20000 h or longer test bearing shaft speed preload outer casing cooling 5s-2la- ... | |
| main spindle bearings high-speed angular contact ball bearings steel ... load capacity kn kgf factor limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings steel ... load capacity kn kgf factor limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings ceramic ... load capacity kn kgf factor limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings ceramic ... load capacity kn kgf factor limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease oil lubrication ... | |
| main spindle bearings super high-speed angular contact ball bearings 5s-2la- ... axial load capacity kn kgf limiting speed min-1 oil lubrication 50 000 44 800 41 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings steel ... 11.2 11.3 11.2 11.3 11.3 11.2 limiting speed min-1 grease lubrication 21 800 19 700 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease lubrication 23 100 20 800 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease lubrication 20 500 18 500 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings steel ... 10.9 10.9 10.9 10.9 11.0 11.0 limiting speed min-1 grease lubrication 22 200 20 500 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease lubrication 23 500 21 600 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings steel ... axial load capacity kn kgf limiting speed min-1 grease lubrication 20 800 19 200 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings ceramic ... .8 7.7 7.8 7.8 7.8 7.8 7.8 7.7 limiting speed min-1 grease lubrication 25 600 23 100 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease lubrication 28 200 25 500 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease lubrication 25 600 23 200 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings ceramic ... .5 7.5 7.5 7.5 7.6 7.6 7.6 7.6 limiting speed min-1 grease lubrication 26 000 24 000 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease lubrication 28 700 26 500 ... | |
| main spindle bearings sealed high-speed angular contact ball bearings ceramic ... axial load capacity kn kgf limiting speed min-1 grease lubrication 26 100 24 100 ... | |
| ntn main spindle bearings main spindle bearings 10 cylindrical roller bearings ... roller bearings u recommended fit of high-precision cylindrical roller bearings i ... lubrication specifications o ultra high speed double row cylindrical roller ... 242 244 244 245 nn30hsrt6 type !0 ultra high-speed single row cylindrical roller bearings ... 1 eco-friendly air-oil lubricated ultra high speed single row cylindrical roller ... double-row cylindrical roller bearings high speed single-row cylindrical roller ... bearings ultra high-speed single row cylindrical roller bearings ... eco-friendly ultra high-speed single row cylindrical roller bearings ... | |
| ntn main spindle bearings 10 cylindrical roller bearings ... also its structure is suitable for high-speed operation a cylindrical roller bearing ... used for the main spindle of a machine tool can have either a ... bearings are available in two types high-speed n10hs type and ultra highspeed n10hsrt6 ... type the n10hs type bearings have high-strength machined brass cages while the n10hsr ... n10hslt6 type is a variation from the high-speed n10hsrt6 type bearing and can be used ... come in two types standard type and high-speed hs type standard cage is machined brass ... | |
| ntn main spindle bearings 3 bearing designations nn49 30 ... jis class 2 p4 jis class 4 up special high precision internal clearance code see ... code no code standard specification hs high speed specification bore diameter code ... hsr ultra high speed specification dimension series code ... t6 molded peek cage hsr type no code high strength machined brass cage internal ... modification code hs high speed specification hsr ultra high speed ... use of a taper gauge is recommended for higher accuracy of the main spindle refer to ... cylindrical roller bearing and main spindle taper angle in the technical data ... 4 class 2 class 4 class 2 max incl high low high low high low high low 30 50 80 ... | |
| ntn main spindle bearings 7 recommended fit of high- ... bearings in order to maintain the high precision of a precision bearing under ... rolling elements [mm multiplied by speed [min-1 when the dmn value is lager ... tapered bore to the shaft to maintain high precision of the bearing for details of ... 5 cylindrical roller bearing and main spindle taper angle in the technical data ... | |
| 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 same level of rigidity and ... 1 optimized internal design to realize high speed and low temperature rise 2 molded ... peek cage is used for high speed under grease air-oil lubrication and ... fig 10.4 nn30hsrt6 type permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... lubrication nn30hsrt6 notes permissible speed of each bearing dmn value varies ... cage material and unproved design high speed operation is by the cage design ... | |
| ntn main spindle bearings high speed test dmn value of 1.0 million under ... fig 10.5 10.6 test conditions bearing speed mounted radial clearance lubrication ... mp-1 yes test conditions bearing speed mounted radial clearance lubrication ... 2000 4000 6000 8000 0 5000 10000 15000 speed min -1 speed min-1 0 0.25 0.5 0.75 1.0 ... nn3020hsk 100 150 37 8000 min-1 speed 5 m mounted radial clearance grease ... | |
| ntn main spindle bearings !0 ultra high-speed single row cylindrical roller bearings ... roller bearings have been designed for high-speed operation bearing specification ... 1 optimized internal design allows high speed operation and limits temperature ... 2 special resin cage is suitable for high-speed operation fig 10.3 n10hsrt6 type ... permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... lubrication n10hsrt6 notes permissible speed of each bearing dmn value varies ... and contact ntn simplified main spindle configuration adoption of simplified ... type bearings can reliably run at a higher speed with grease lubrication the ... oil mist fig 10.4 simplified main spindle configuration simplified main spindle ... rear structure n10hsr n10hsl type high-speed cylindrical roller bearings can replace ... | |
| ntn main spindle bearings high-speed operation test with grease lubrication ... design the n10hsr type is capable of high-speed operation with dmn value of 1.15 ... .9 test conditions test bearing shaft speed mounted radial clearance lubrication ... no test conditions test bearing shaft speed mounted radial clearance lubrication ... 4000 6000 8000 10000 12000 14000 16000 speed min 0 0.5 speed min-1 1.0 0 0.5 1.0 dmn ... value 106 dmn value 106 fig 10.6 high-speed test results grease lubrication without ... outer case cooling fig 10.7 high-speed test results grease lubrication with ... test conditions test bearing shaft speed mounted radial clearance lubrication ... no test conditions test bearing shaft speed mounted radial clearance lubrication ... 250000 0 5000 10000 15000 20000 250000 speed min 0 0.5 1.0 1.5 speed min-1 2.0 2.5 0 ... | |
| ntn main spindle bearings !1 eco-friendly air-oil ... saves energy while allowing higher-speed machining operation n10hslt6 type ... 1 optimized internal design allows high speed operation and limits temperature ... fig 10.10 n10hslt6 type permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... 2.4 2.6 2.8 n10hslt6 notes permissible speed of each bearing dmn value varies ... to the above guideline and contact ntn high-speed running test even with decreased air ... type bearings can reliably operate at high speed of dmn 2.3 106 fig 10.11 10.12 ... test conditions test bearing shaft speed mounted radial clearance oil ... 20 nl/min no test bearing shaft speed mounted radial clearance oil ... 0 0 5000 10000 15000 20000 25000 shaft speed min-1 0 0.5 1.0 1.5 2.0 2.5 0 0.5 shaft ... speed min-1 1.0 1.5 2.0 2.5 dmn value 106 dmn ... | |
| main spindle bearings high speed single row cylindrical roller bearings ... 4 950 5 450 6 700 7 050 8 400 limiting speeds min-1 grease oil lubrication ... | |
| main spindle bearings high speed single row cylindrical roller bearings ... 22 400 24 400 27 800 31 500 limiting speeds min-1 grease oil lubrication ... | |
| main spindle bearings ultra high-speed single row cylindrical roller bearings ... 3 250 3 850 5 100 6 550 7 200 limiting speeds min-1 grease oil lubrication ... | |
| main spindle bearings eco-friendly ultra high-speed ... 3 250 3 850 5 100 6 550 7 200 limiting speeds min-1 grease lubrication 30 900 28 900 ... | |
| main spindle bearings !3 taper gage and internal ... the need increases for machine tools of higher speed and precision a higher degree of ... on the shaft must be finished to a high degree of precision ntn recommends the ... can diminish the precision of the main spindle while too small a radial clearance can ... | |
| ntn main spindle bearings main spindle bearings 11 angular contact ball ... thrust ball bearings t accuracy of high-speed duplex angular contact ball bearings ... | |
| ntn main spindle bearings 11 angular contact ball ... 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 ... initial contact angle cage material 60 high-strength machined brass cage these series can ... 40 30 molded resin machined phenolic high-strength machined copper alloy cage these duplex ... lower at 40° and 30° the series boast highspeed capability however their axial rigidity ... thrust angular contact ball bearing high-speed duplex angular contact ball bearing for ... | |
| ntn main spindle bearings 5 accuracy of high-speed duplex angular contact ball bearings ... bore diameter deviation dmp class 5 high low 0 0 0 0 0 0 0 0 0 6 8 9 10 13 13 15 ... 18 23 class 41 high low 0 0 0 0 0 0 0 0 0 5 6 7 8 10 10 12 ... bs class 5 class 4 class 5 class 4 max high low 0 0 0 0 0 0 0 0 0 240 240 300 400 ... class 5l or class 4l2 class 5 class 4 2 high high high low low low 25 30 36 43 43 50 ... | |
| ntn main spindle bearings 7 shaft and housing fits fits ... bearings for axial loads to maintain high accuracy provision of interference ... reduction of axial runout of the main spindle measure and control the concentricity ... note 1 target the median value 2 for high-speed applications where dmn value exceeds 0. ... specifications of air-oil oil type spindle oil viscosity grade iso vg from 10 to ... in the technical data section notes high-strength machined brass cages are used for 5629/ ... | |
| ntn main spindle bearings 9 angular contact ball ... type angular contact ball bearing has a higher limiting speed with the same rigidity ... the temperature rise especially at high speed range 2 improved molded nylon ... design where the ball contacts to have higher lubrication performance under grease or ... fig 11.2 hta u type permissible speed range dmn value 106 0 0.2 0.4 0.6 0.8 1 ... 40° 5s-hta0 u notes permissible speed of each bearing dmn value varies ... | |
| ntn main spindle bearings high speed test dmn value of 1.0 million under ... w/o test condition bearing 22.5 2 rows speed mounted preload lubrication oil air ... interval 5 min 40 nl/min w w/o 2 rows speed mounted preload lubrication grease type ... 4000 6000 -1 8000 2500 5000 7500 10000 speed 0 0.25 0.5 min speed 0.75 1.0 0 0.25 0. ... w/o test condition bearing 22.5 2 rows speed mounted preload lubrication oil air ... interval 5 min 40 nl/min w w/o 2 rows speed mounted preload lubrication grease type ... rise 0 2000 4000 6000 0 2500 5000 7500 speed 0 0.25 min -1 speed 0.75 0 0.25 min-1 0 ... | |
