Double Row Cylindrical Roller Bearings
Panimula
Ang double-row cylindrical roller bearings ay nagbibigay-daan sa isang tiyak na axial displacement sa pagitan ng shaft at ng bearing pedestal at maaaring magamit bilang non-positioning bearings. , atbp., lalo na angkop para sa suporta sa spindle ng machine tool.
Mga Tampok at Benepisyo
● Mataas na kapasidad sa pagdadala ng load
Dahil sa kanilang ikalawang hanay ng mga roller, ang double row cylindrical roller bearings ay angkop para sa mabibigat na radial load.
● Mababang friction (Roller end / flange contact area)
Ang open flange na disenyo, kasama ang roller end design at surface finish, ay nagpo-promote ng lubricant film formation na nagreresulta sa mas mababang friction at mas mataas na axial load carrying capacity.
● Mahabang buhay ng serbisyo
Binabawasan ng logarithmic roller profile ang mga edge stress sa roller/raceway contact at sensitivity sa misalignment at shaft deflection.
● Pinahusay na pagiging maaasahan sa pagpapatakbo
Ang surface finish sa contact surface ng rollers at raceways ay sumusuporta sa pagbuo ng hydrodynamic lubricant film.
● Nahihiwalay at napagpapalit
Ang mga separable na bahagi ng double row cylindrical roller bearings ay maaaring palitan.Pinapadali nito ang pag-mount at pag-dismount, pati na rin ang mga inspeksyon sa pagpapanatili.
● Mataas na bilis ng kakayahan
Ang mga disenyo ng hawla ay angkop para sa mataas na bilis, mabilis na acceleration at peak load.
Aplikasyon
Maaaring gamitin ang NUU double row cylindrical roller bearings sa mga machine tool, mga sasakyang de-motor, mga motor, mga reduction gearbox, vibrating screen, atbp.
Paggamit
Ang double row cylindrical roller bearing ay kayang dalhin ang malaking du load sa radial na direksyon.Pinapayagan nito ang dalawang hilera ng DAO rollers sa bearing na may mataas na bilis na ayusin sa isang cross way.Ang dalas ng pagbabagu-bago sa panahon ng pag-ikot ay dalawang beses na mas mataas kaysa sa single row bearing, at ang amplitude ay nababawasan ng 70%.
Mayroong dalawang uri ng mga bearings na karaniwang ginagamit: NN30/W33 at NN30K/W33 series.Ang serye ng NNU49/W33 at NNU49K/W33 na may dalang panlabas na singsing na may gilid, maaaring paghiwalayin ang panloob na singsing, ang panloob na singsing ng NN30K/W33 at NNU49K/W33 ay mga tapered na butas (taper 1:12), na tugma sa conical journal ng spindle .Ang paggalaw ng axial ng panloob na singsing ay maaaring magpalawak ng panloob na singsing upang mabawasan ang clearance ng tindig at kahit na pahigpitin ang tindig.
Ang mga cylindrical bore bearings ay kadalasang mainit-load, at ang interference fit ay ginagamit upang bawasan ang bearing clearance o upang makamit ang layunin ng preloading.Ang NNU49 series bearings na may detachable inner ring ay karaniwang ginagawa sa raceway pagkatapos mag-install ng spindle sa inner ring upang makakuha ng mataas na spindle rotation accuracy.
Mga Parameter
SIZE | DIMENSYON | Mga pangunahing rating ng pagkarga | Limitasyon sa pagkarga ng pagkapagod | Mga rating ng bilis | |||||
pabago-bago | static | Bilis ng sanggunian | Nililimitahan ang bilis | ||||||
d[mm] | D[mm] | B[mm] | C[mm] | C[kN] | C0[kN] | Pu[kN] | [r/min] | [r/min] | |
NNU 4152 K30M/W33 | 260 | 440 | 180 | 2200 | 3900 | 365 | 1300 | 1600 | |
NNU 4152 M/W33 | 260 | 440 | 180 | 2200 | 3900 | 365 | 1300 | 1600 | |
NNU 4156 K30M/W33 | 280 | 460 | 180 | 2550 | 4750 | 440 | 1200 | 1500 | |
NNU 4156 M/W33 | 280 | 460 | 180 | 2550 | 4750 | 440 | 1200 | 1500 | |
315976 B | 280 | 470 | 200 | 2700 | 5100 | 455 | 1000 | 1500 | |
BC2B 320119 | 300 | 460 | 180 | 2600 | 5500 | 490 | 1000 | 1500 | |
NNU 4160 K30M/W33 | 300 | 500 | 200 | 2860 | 5300 | 455 | 1100 | 1400 | |
NNU 4160 M/W33 | 300 | 500 | 200 | 2860 | 5300 | 455 | 1100 | 1400 | |
NNUP 4964 B/HB1W33 | 320 | 440 | 118 | 1020 | 2360 | 228 | 1400 | 1500 | |
BC2B 322216 | 320 | 460 | 120 | 1720 | 3600 | 335 | 950 | 1400 | |
315583 C | 320 | 480 | 175 | 2460 | 5400 | 510 | 950 | 1400 | |
NNU 4164 K30F | 320 | 540 | 218 | 3410 | 6200 | 530 | 1000 | 1300 | |
NNU 4164 F | 320 | 540 | 218 | 3690 | 6200 | 530 | 1000 | 1300 | |
BC2B 320118 | 340 | 520 | 305 | 200 | 3300 | 7100 | 610 | 900 | 1300 |
NNU 4168 K30M/W33 | 340 | 580 | 243 | 4020 | 7500 | 620 | 950 | 1200 | |
NNU 4168 M/W33 | 340 | 580 | 243 | 4020 | 7500 | 620 | 950 | 1200 | |
BC2B 319878 | 350 | 520 | 150 | 2120 | 4500 | 400 | 850 | 1300 | |
BC2B 320075 | 360 | 500 | 125 | 1790 | 3650 | 335 | 900 | 1300 | |
BC2B 322217 | 360 | 500 | 125 | 2050 | 4300 | 360 | 900 | 1300 | |
NNU 4172 K30M | 360 | 600 | 243 | 4290 | 8500 | 695 | 900 | 1100 | |
BC2B 319961 | 370 | 520 | 220 | 193 | 2750 | 6700 | 570 | 850 | 1300 |
NNU 4876 K/W33 | 380 | 480 | 100 | 952 | 2550 | 212 | 1200 | 1300 | |
NNU 4876/HB1W33 | 380 | 480 | 100 | 952 | 2550 | 212 | 1200 | 1300 | |
BC2B 326131/HB1 | 380 | 540 | 130 | 2010 | 4300 | 380 | 800 | 1200 | |
BC2B 320041 | 380 | 540 | 200 | 2860 | 6800 | 585 | 800 | 1200 | |
NNU 4176 K30M | 380 | 620 | 243 | 4290 | 8500 | 680 | 850 | 1100 | |
NNU 4176 M | 380 | 620 | 243 | 4290 | 8500 | 680 | 850 | 1100 | |
NNU 4880/HB1W33 | 400 | 500 | 100 | 968 | 2750 | 208 | 1100 | 1200 | |
NNUP 4880/HB1W33 | 400 | 500 | 100 | 968 | 2750 | 208 | 1100 | 1200 | |
NNU 4880 K/W33 | 400 | 500 | 100 | 968 | 2750 | 208 | 1200 | 1200 | |
314987 B | 400 | 560 | 205 | 3140 | 7800 | 655 | 800 | 1200 | |
314987 C | 400 | 560 | 205 | 3140 | 7800 | 655 | 800 | 1200 | |
BC2B 326363/HA4 | 400 | 600.19 | 200 | 3470 | 7200 | 600 | 750 | 1100 | |
NNU 4180 K30M/W33 | 400 | 650 | 250 | 4730 | 9500 | 750 | 800 | 1000 | |
NNU 4180 M/W33 | 400 | 650 | 250 | 4730 | 9500 | 750 | 800 | 1000 | |
316019 | 410 | 600 | 220 | 3800 | 8650 | 720 | 750 | 1100 | |
NNU 4884 K/W33 | 420 | 520 | 100 | 990 | 2850 | 196 | 1100 | 1200 | |
NNU 4884/W33 | 420 | 520 | 100 | 990 | 2850 | 196 | 1100 | 1200 | |
BC2B 326137/HB1 | 420 | 580 | 130 | 2380 | 5300 | 465 | 750 | 1100 | |
313555 A | 420 | 580 | 160 | 2330 | 5400 | 475 | 750 | 1100 | |
314982 | 420 | 600 | 220 | 3580 | 8800 | 720 | 750 | 1100 | |
314391 | 420 | 620 | 200 | 3470 | 7800 | 655 | 700 | 1100 | |
NNU 4888 KM/W33 | 440 | 540 | 100 | 1010 | 2900 | 186 | 1000 | 1100 | |
NNU 4888 M/W33 | 440 | 540 | 100 | 1170 | 3400 | 216 | 1000 | 1100 | |
316077 A | 440 | 620 | 225 | 3910 | 9800 | 800 | 700 | 1000 | |
BC2B 316521 | 440 | 640 | 230 | 4570 | 9800 | 780 | 850 | 1000 | |
NNU 4188 K30M/W33 | 440 | 720 | 280 | 5720 | 11800 | 900 | 700 | 900 | |
NNU 4188 M/W33 | 440 | 720 | 280 | 5720 | 11800 | 900 | 700 | 900 | |
BC2B 322969/HB1 | 457.2 | 660.4 | 228.6 | 203.2 | 3690 | 8150 | 640 | 670 | 950 |
NNU 4892 K/W33 | 460 | 580 | 118 | 1190 | 3250 | 224 | 1000 | 1100 | |
NNU 4892/W33 | 460 | 580 | 118 | 1190 | 3250 | 224 | 1000 | 1100 | |
316739 A | 460 | 650 | 235 | 4400 | 11200 | 900 | 670 | 1000 | |
NNU 4192 K30M | 460 | 760 | 300 | 6440 | 12900 | 980 | 670 | 850 | |
NNU 4192 M | 460 | 760 | 300 | 6440 | 12900 | 980 | 670 | 850 | |
BC2-8004/HA1 | 460 | 780 | 280 | 250 | 5610 | 10400 | 780 | 560 | 850 |
316189 | 480 | 700 | 260 | 5390 | 12500 | 950 | 600 | 900 | |
NNU 4196 K30M/W33 | 480 | 790 | 308 | 7040 | 14300 | 1080 | 630 | 800 | |
NNU 4196 M/W33 | 480 | 790 | 308 | 7040 | 14300 | 1080 | 630 | 800 | |
BC2B 326196/HA1 | 487.98 | 637 | 175 | 3000 | 7600 | 6100 | 670 | 950 | |
316639 AG | 490 | 694 | 174 | 3740 | 9000 | 750 | 600 | 900 | |
314990 A | 500 | 680 | 225 | 4130 | 11000 | 880 | 600 | 900 | |
314419 | 500 | 720 | 218 | 4730 | 10800 | 815 | 600 | 850 | |
NNU 41/500 K30M/W33 | 500 | 830 | 325 | 7480 | 15000 | 1120 | 600 | 800 | |
NNU 41/500 M/W33 | 500 | 830 | 325 | 7480 | 15000 | 1120 | 600 | 800 | |
BC2B 326064/HA1 | 530 | 780 | 225 | 4400 | 9500 | 695 | 530 | 800 | |
315040 A | 530 | 780 | 250 | 4680 | 10200 | 765 | 530 | 800 | |
BC2B 320117/HA4 | 530 | 780 | 475 | 285 | 7210 | 17300 | 1290 | 530 | 800 |
NNU 41/530 K30M/W33 | 530 | 870 | 335 | 7810 | 16000 | 1160 | 560 | 750 | |
NNU 41/530 M/W33 | 530 | 870 | 335 | 7810 | 16000 | 1160 | 560 | 750 | |
316115 | 550 | 800 | 260 | 5830 | 13400 | 980 | 530 | 750 | |
NNU 41/560 K30M/W33X | 560 | 920 | 355 | 8800 | 18300 | 1320 | 530 | 670 | |
NNU 41/560 M/W33 | 560 | 920 | 355 | 8800 | 18300 | 1320 | 530 | 670 | |
BC2B 319584/HA1 | 600 | 820 | 287.5 | 6440 | 18000 | 1290 | 480 | 700 | |
BC2-8005/HB1 | 600 | 820 | 365 | 7810 | 21200 | 1530 | 480 | 700 | |
NNU 41/600 K30M/W33 | 600 | 980 | 375 | 9900 | 21200 | 1460 | 480 | 630 | |
NNU 41/600 M/W33 | 600 | 980 | 375 | 9900 | 21200 | 1460 | 480 | 630 | |
BC2-8012/HB1 | 630 | 850 | 218 | 4400 | 11800 | 915 | 480 | 700 | |
NNU 41/630 K30M/W33 | 630 | 1030 | 400 | 11000 | 24000 | 1630 | 450 | 600 | |
NNU 41/630 M/W33 | 630 | 1030 | 400 | 11000 | 24000 | 1630 | 450 | 600 | |
BC2B 326894/HB1 | 650 | 920 | 335 | 8580 | 23200 | 1600 | 530 | 630 | |
313477 B | 660 | 880 | 225 | 4180 | 11800 | 830 | 450 | 670 | |
NNU 41/670 K30M/W33 | 670 | 1090 | 412 | 12100 | 25500 | 1730 | 430 | 530 | |
NNU 41/670 M/W33 | 670 | 1090 | 412 | 12100 | 25500 | 1730 | 430 | 530 | |
BC2-8074/HA5 | 690 | 980 | 365 | 10500 | 27000 | 1830 | 400 | 600 | |
BC2-8015/HB1 | 690 | 980 | 550 | 357.5 | 9900 | 27000 | 1830 | 400 | 600 |
NNU 41/710 K30M/W33 | 710 | 1150 | 438 | 13400 | 28500 | 1900 | 380 | 500 | |
NNU 41/710 M/W33 | 710 | 1150 | 438 | 13400 | 28500 | 1900 | 380 | 500 | |
314420 | 750 | 1000 | 250 | 6160 | 16600 | 1120 | 380 | 560 | |
NNU 41/750 K30M/W33 | 750 | 1220 | 475 | 16100 | 35500 | 2320 | 380 | 450 | |
NNU 41/750 M/W33 | 750 | 1220 | 475 | 16800 | 36500 | 2400 | 360 | 450 | |
BC2B 326379/HA4 | 800 | 1260 | 375 | 12800 | 28000 | 1800 | 300 | 430 | |
NNU 41/800 K30M/W33 | 800 | 1280 | 475 | 16500 | 36500 | 2400 | 320 | 430 | |
NNU 41/800 M/W33 | 800 | 1280 | 475 | 17600 | 40500 | 2600 | 340 | 430 | |
NNU 41/850 K30M/W33 | 850 | 1360 | 500 | 19800 | 45000 | 2900 | 300 | 400 | |
NNU 41/850 M/W33 | 850 | 1360 | 500 | 19800 | 45000 | 2900 | 300 | 400 | |
NNU 41/900 K30M/W33 | 900 | 1420 | 515 | 22000 | 47500 | 3000 | 280 | 360 | |
NNU 41/900 M/W33 | 900 | 1420 | 515 | 22000 | 47500 | 3000 | 280 | 360 | |
BC2-8022/HA1 | 950 | 1360 | 420 | 14000 | 33500 | 2080 | 260 | 360 | |
NNU 41/950 K30M/W33 | 950 | 1500 | 545 | 25500 | 57000 | 3550 | 260 | 340 | |
NNU 41/950 M/W33 | 950 | 1500 | 545 | 25500 | 57000 | 3550 | 260 | 340 | |
NNU 41/1000 K30M/W33 | 1000 | 1580 | 580 | 27500 | 62000 | 3800 | 240 | 300 | |
NNU 41/1000 M/W33 | 1000 | 1580 | 580 | 27500 | 62000 | 3800 | 240 | 300 | |
NNU 41/1060 K30M/W33 | 1060 | 1660 | 600 | 30300 | 69500 | 4150 | 220 | 280 | |
NNU 41/1060 M/W33 | 1060 | 1660 | 600 | 30300 | 69500 | 4150 | 220 | 280 | |
NNU 41/1120 K30M/W33 | 1120 | 1750 | 630 | 33600 | 76500 | 4550 | 200 | 280 | |
NNU 41/1120 M/W33 | 1120 | 1750 | 630 | 33600 | 76500 | 4550 | 200 | 280 | |
NNU 41/1180 K30M/W33 | 1180 | 1850 | 670 | 36900 | 85000 | 4900 | 180 | 240 | |
NNU 41/1180 M/W33 | 1180 | 1850 | 670 | 36900 | 85000 | 4900 | 180 | 240 | |
NNU 41/1250 K30M/W33 | 1250 | 1950 | 710 | 41800 | 98000 | 5600 | 160 | 220 | |
NNU 41/1250 M/W33 | 1250 | 1950 | 710 | 41800 | 98000 | 5600 | 160 | 220 | |
BC2B 326372/HA1 | 1319.5 | 1720 | 300 | 12500 | 34500 | 2000 | 160 | 240 | |
NNU 41/1320 K30M/W33 | 1320 | 2060 | 750 | 45700 | 106000 | 6000 | 150 | 190 | |
NNU 41/1320 M/W33 | 1320 | 2060 | 750 | 45700 | 106000 | 6000 | 150 | 190 | |
NNU 41/1400 K30M/W33 | 1400 | 2180 | 775 | 49500 | 116000 | 6400 | 130 | 170 | |
NNU 41/1400 M/W33 | 1400 | 2180 | 775 | 49500 | 116000 | 6400 | 130 | 170 | |
NNU 41/1500 K30M/W33 | 1500 | 2300 | 800 | 52800 | 132000 | 7100 | 120 | 150 | |
NNU 41/1500 M/W33 | 1500 | 2300 | 800 | 52800 | 132000 | 7100 | 120 | 150 |