Needle bearings are roller bearings with cylindrical rollers, which are thin and long relative to their diameter. Such rollers are called needle rollers. Despite having a smaller section, the bearing still has a high load bearing capacity. Needle roller bearings are equipped with thin and long rollers (roller diameter D≤5mm, L/D≥2.5, L is the length of the roller), so The radial structure is compact, and when the inner diameter and load capacity are the same as other types of bearings, the outer diameter is the smallest, especially suitable for the support structure with limited radial installation size.
Depending on the application, a bearing without an inner ring or a needle roller and cage assembly can be selected. At this time, the surface of the journal and the surface of the housing hole matched with the bearing are directly used as the inner and outer rolling surfaces of the bearing. In order to ensure the load capacity and running performance As with the bearing with ring, the hardness, machining accuracy and surface quality of the raceway surface of the shaft or housing hole should be similar to the raceway of the bearing ring. This type of bearing can only withstand radial loads
In addition to those listed in the catalog, bearings that can be used for general engineering, such as: open drawn cup needle roller bearings (1), closed drawn cup needle roller bearings (2), inner ring needle roller bearings (3) and no Needle roller bearings with inner ring / needle roller bearings without inner ring and cage (4), filled needle roller bearings with cage and without cage (5)
Advantages Needle Roller Bearings
Needle roller bearings are equipped with thin and long rollers (the length of the rollers is 3~10 times the diameter, and the diameter is generally not more than 5mm), so the radial structure is compact, and its inner diameter and load capacity are the same as other types of bearings. It has the smallest diameter and is especially suitable for supporting structures with limited radial installation size. Needle roller bearings should be combined with the bearing ring and application according to the different occasions, the machining accuracy and surface quality. Needle roller bearings are bearing units composed of radial needle roller bearings and thrust bearing components
Angular contact ball bearings have raceways on the inner and outer rings, and the inner and outer rings can make relative displacements along the bearing axis. Bearings of this type are particularly suitable for combined loads, i.e. loads acting both radially and axially. The axial load bearing capacity of angular contact ball bearings increases with the increase of the contact angle α. The contact angle is the angle between the line connecting the contact points of the ball and the raceway in the radial plane and the line perpendicular to the bearing axis.
aring designation | Bearing Designation | Basic load Ratings | Limiting speed | |||||
d | F | D | B | rs | C | Co | min | |
mm | N | |||||||
NA4900 | 10 | 14 | 22 | 13 | 0.3 | 8500 | 9200 | 25000 |
NA4901 | 12 | 16 | 24 | 13 | 0.3 | 9400 | 10900 | 23000 |
NA4902 | 15 | 20 | 28 | 13 | 0.3 | 10600 | 13600 | 21000 |
NA4903 | 17 | 22 | 30 | 13 | 0.3 | 11000 | 14600 | 20000 |
NA4904 | 20 | 25 | 37 | 17 | 0.3 | 21000 | 25500 | 17000 |
NA49/22 | 22 | 28 | 39 | 17 | 0.3 | 22800 | 29500 | 15000 |
NA4905 | 25 | 30 | 42 | 17 | 0.3 | 23600 | 31500 | 14000 |
NA49/28 | 28 | 32 | 45 | 17 | 0.3 | 24400 | 33500 | 14000 |
NA4906 | 30 | 35 | 47 | 17 | 0.3 | 25000 | 35500 | 13000 |
NA4932 | 32 | 40 | 52 | 20 | 0.6 | 30500 | 47500 | 11000 |
NA4907 | 35 | 42 | 55 | 20 | 0.6 | 31500 | 50000 | 11000 |
NA4908 | 40 | 48 | 62 | 22 | 0.6 | 43000 | 67000 | 9000 |
NA4909 | 45 | 52 | 68 | 22 | 0.6 | 45000 | 73000 | 8500 |
NA4910 | 50 | 58 | 72 | 22 | 0.6 | 47000 | 80000 | 8000 |
NA4911 | 55 | 63 | 80 | 25 | 1 | 58000 | 10000 | 7000 |
NA4912 | 60 | 68 | 85 | 25 | 1 | 60000 | 108000 | 6500 |
NA4913 | 65 | 72 | 90 | 25 | 1 | 61000 | 112000 | 6500 |
NA4914 | 70 | 80 | 100 | 30 | 1 | 84000 | 156000 | 5500 |
NA4915 | 75 | 85 | 105 | 30 | 1 | 86000 | 162000 | 5500 |
NA4916 | 80 | 90 | 110 | 30 | 1 | 89000 | 174000 | 5000 |
NA4917 | 85 | 100 | 120 | 35 | 1.1 | 111000 | 237000 | 4600 |
NA4918 | 90 | 105 | 125 | 35 | 1.1 | 114000 | 250000 | 4400 |
NA4919 | 95 | 110 | 130 | 35 | 1.1 | 116000 | 260000 | 4200 |
Series | Item NO. | Bore Diameter(mm) |
B K | BK0408~BK6032 | 4~60 |
HK | HK0408~HK6032 | 4~60 |
BA | BA55~BA1816 | 7.94~22.22 |
SCE | SCE108~SCE1616PP | 15.88~25.4 |
F | F-0608~F-60*68*40 | 6~60 |
HF | HF0409~HF3530 | 4~35 |
K | K5*8*8TN~K110*118*30 | 5~110 |
KZK | KZK8*12*8~KZK40*48*20 | 8~40 |
K B K | K B K8*11*10~K B K20*25*25 | 8~20 |
NK | NK5/10TN~NK60/25 | 5~60 |
RNA | RNA4900~RNA4928 | 14~160 |
RNA6900~RNA6919 | 14~110 | |
NKI | NKI8~NKI100/30 | 8~100 |
NA | NA4900~NA4928 | 10~140 |
NA6900~NA6919 | 10~95 | |
RNAV | RNAV4002~RNAV4017 | 21.87~104.8 |
NAV | NAV4002~NAV4017 | 15~85 |
AXK | AXK0414TN~AXK160200 | 4~160 |
NTA | NTA-512~NTA-3244 | 7.92~50.80 |
AXW | AXW10~AXW50 | 10~50 |
AS | AS0414~AS160200 | 4~160 |
WS | WS81102~WS81132 | 15~160 |
ZS | ZS1127~ZS141199 | 15~160 |
Bearing Number | Nominal Bearing Dimensions(mm) | Bearing Weight (kg) | |||
d | Fw | D | C | ||
HK0306 | 3 | 6.5 | 6 | 0.0010 | |
HK0408 | 4 | 8 | 8 | 0.0020 | |
HK0509 | 5 | 9 | 9 | 0.0020 | |
HK0608 | 6 | 10 | 8 | 0.0021 | |
HK0609 | 6 | 10 | 9 | 0.0025 | |
HK0709 | 7 | 11 | 9 | 0.0026 | |
HK0808 | 8 | 12 | 8 | 0.0027 | |
HK0810 | 8 | 12 | 10 | 0.0030 | |
HK0812 2RS | 8 | 12 | 12 | 0.0033 | |
HK0908 | 9 | 13 | 8 | 0.0030 | |
HK0910 | 9 | 13 | 10 | 0.0040 | |
HK0912 | 9 | 13 | 12 | 0.0046 | |
HK1010 | 10 | 14 | 10 | 0.0041 | |
HK1012 | 10 | 14 | 12 | 0.0048 | |
HK1014 2RS | 10 | 14 | 14 | 0.0046 | |
HK1015 | 10 | 14 | 15 | 0.0060 | |
HK1216 2RS | 12 | 18 | 16 | 0.0110 | |
HK1210 | 12 | 16 | 10 | 0.0046 | |
HK1212 | 12 | 18 | 12 | 0.0090 | |
HK1312 | 13 | 19 | 12 | 0.0100 | |
HK1412 | 14 | 20 | 12 | 0.0105 | |
HK1416 2RS | 14 | 20 | 16 | 0.0130 | |
HK1512 | 15 | 21 | 12 | 0.0110 | |
HK1516 | 15 | 21 | 16 | 0.0150 | |
HK1516 2RS | 15 | 21 | 16 | 0.0150 | |
HK1520 2RS | 15 | 21 | 20 | 0.0180 | |
HK1612 | 16 | 22 | 12 | 0.0120 | |
HK1616 | 16 | 22 | 16 | 0.0160 | |
HK1616 2RS | 16 | 22 | 16 | 0.0140 | |
HK1620 2RS | 16 | 22 | 20 | 0.0180 | |
HK1712 | 17 | 23 | 12 | 0.0120 | |
HK1812 | 18 | 24 | 12 | 0.0130 | |
HK1816 | 18 | 24 | 16 | 0.0180 | |
HK1816 2RS | 18 | 24 | 16 | 0.0150 | |
HK2010 | 20 | 26 | 10 | 0.0120 | |
HK2012 | 20 | 26 | 12 | 0.0140 | |
HK2016 | 20 | 26 | 16 | 0.0190 | |
HK2016 2RS | 20 | 26 | 16 | 0.0180 | |
HK2020 | 20 | 26 | 20 | 0.0240 | |
HK2020 2RS | 20 | 26 | 20 | 0.0230 |
Part No. d(mm) D(mm) B(mm)
TA3720Z 37 47 20
TA3730Z 37 47 30
TA3815Z 38 48 15
TA3820Z 38 48 20
TA3825Z 38 48 25
TA3830Z 38 48 30
TAW3845Z 38 48 45
TA4015Z 40 50 15
TA4020Z 40 50 20
TA4025Z 40 50 25
TA4030Z 40 50 30
TA4040Z 40 50 40
TA4520Z 45 55 20
TA4525Z 45 55 25
TA4530Z 45 55 30
TA4540Z 45 55 40
TAM3720 37 47 20
TAM3730 37 47 30
TAM3815 38 48 15
TAM3820 38 48 20
TAM3825 38 48 25
TAM3830 38 48 30
TAMW3845 38 48 45
TAM4015 40 50 15
TAM4020 40 50 20
TAM4025 40 50 25
TAM4030 40 50 30
TAM4040 40 50 40
TAM4520 45 55 20
TAM4525 45 55 25
TAM4530 45 55 30
TAM4540 45 55 40
TLA4012Z 40 47 12
TLA4016Z 40 47 16
TLA4020Z 40 47 20
TLA4516Z 45 52 16
BRI61816UU 15.875 9.525 28.575
BRI82016UU 19.05 12.7 31.75
BRI102216UU 22.225 15.875 34.925
BRI122416UU 25.4 19.05 38.1
BRI142620UU 28.575 22.225 41.275
BRI162820UU 31.75 25.4 44.45
BRI183020UU 34.925 28.575 47.625
BRI203320UU 38.1 31.75 52.388
BRI223520UU 41.275 34.925 55.562
BRI243720UU 44.45 38.1 58.738
BRI243920UU 47.625 38.1 61.912
TAM5520 55 67 20
TAM5525 55 67 25
YB168 25.4 31.75 12.7
YB1612 25.4 31.75 19.05
YB1616 25.4 31.75 25.4
YBH168 25.4 33.338 12.7
YBH1612 25.4 33.338 19.05
YBH1616 25.4 33.338 25.4
BA186Z 28.575 34.925 9.52
BA188Z 28.575 34.925 12.7
BA1812Z 28.575 34.925 19.05
BA1816Z 28.575 34.925 25.4
BA1820Z 28.575 34.925 31.75
BA1910Z 30.162 38.1 15.88
BA19162 30.162 38.1 25.4
BAM186 28.575 34.925 9.52
BAM188 28.575 34.925 12.7
BAM1812 28.575 34.925 19.05
BAM1816 28.575 34.925 25.4
BAM1820 28.575 34.925 31.75
BAM1910 30.162 38.1 15.88
BAM1916 30.162 38.1 25.4
BHA1812Z 28.575 38.1 19.05
BHA1816Z 28.575 38.1 25.4
BHA1818Z 28.575 38.1 28.58
BHA1820Z 28.575 38.1 31.75
BHAM1812 28.575 38.1 19.05
BHAM1816 28.575 38.1 25.4
BHAM1818 28.575 38.1 28.58
KT556020 55 60 20
KT556027 55 60 27
KT556120 55 61 20
KT556315 55 63 15
KT556320 55 63 20
KT556325 55 63 25
KT586320 58 63 20
KT586420 58 64 20
KT606520 60 65 20
KT606820 60 68 20
KT606825 60 68 25
KT606827 60 68 27
KT607236 60 72 36
KT637120 63 71 20
Shaft Diameter | Bearing Designation | Basic size | Load | Limiting Speed | |||
Fw | D | C | Cr Dynamic | Cor Static | Oil | ||
mm | mm | N | rpm | ||||
8 | NK8/12 TN | 8 | 15 | 12 | 3050 | 3650 | 29112 |
10 | NK10/12 TN | 10 | 17 | 12 | 4750 | 5350 | 23500 |
12 | NK12/12 | 12 | 19 | 12 | 6050 | 6400 | 21640 |
NK12/16 | 12 | 19 | 16 | 8200 | 9800 | 21640 | |
14 | NK14/16 | 14 | 22 | 16 | 8260 | 9600 | 18322 |
NKS14 | 14 | 25 | 16 | 10400 | 10800 | 17652 | |
RNA4900 | 14 | 22 | 13 | 8060 | 9000 | 18322 | |
RNA6900 | 14 | 22 | 22 | 8281 | 11612 | 18322 | |
15 | NK15/12 | 15 | 23 | 12 | 8600 | 10070 | 21004 |
16 | NK16/16 | 16 | 24 | 16 | 9030 | 11900 | 15522 |
NK16/20 | 16 | 24 | 20 | 10400 | 16800 | 15522 | |
RNA4901 | 16 | 24 | 13 | 6400 | 8900 | 15522 | |
RNA6901 | 16 | 24 | 22 | 14000 | 18600 | 15522 | |
NKS16 | 16 | 28 | 16 | 14900 | 15000 | 20000 |
Bearing No. | Boundary dimensions(mm) | Basic load ratings(N) | Limiting speeds(rpm) | Mass(g) | |||
Fw | D | C | Cr | Cor | Oil | ≈ | |
RNA4900 | 14 | 22 | 13 | 8060 | 9000 | 18322 | 24.4 |
RNA4901 | 16 | 24 | 13 | 6400 | 8900 | 15522 | 16.6 |
RNA4902 | 20 | 28 | 13 | 10800 | 12800 | 12716 | 20.5 |
RNA4903 | 22 | 30 | 13 | 12000 | 16800 | 16300 | 20.7 |
RNA4904 | 25 | 37 | 17 | 11912 | 16594 | 14060 | 50.8 |
RNA4905 | 30 | 42 | 17 | 13452 | 20475 | 12066 | 57 |
RNA49/28 | 32 | 45 | 17 | 17400 | 30050 | 12000 | 80 |
RNA4906 | 35 | 47 | 17 | 17000 | 30500 | 12000 | 62.8 |
RNA4907 | 42 | 55 | 20 | 19800 | 41500 | 8710 | 99.3 |
RNA4908 | 48 | 62 | 22 | 31036 | 63873 | 8120 | 132 |
RNA4909 | 52 | 68 | 22 | 37000 | 69500 | 7625 | 163 |
RNA4910 | 58 | 72 | 40 | 68000 | 135000 | 7500 | 296 |
RNA4911 | 63 | 80 | 25 | 50600 | 96580 | 6340 | 241 |
RNA4912 | 68 | 85 | 25 | 52800 | 91050 | 6100 | 257 |
RNA4913 | 72 | 90 | 25 | 57500 | 110500 | 6100 | 300 |
RNA4914 | 80 | 100 | 30 | 79000 | 154000 | 5130 | 400 |
RNA4915 | 85 | 105 | 30 | 82000 | 158000 | 5130 | 472 |
RNA4916 | 90 | 110 | 30 | 81000 | 170500 | 4927 | 496 |
RNA4917 | 100 | 120 | 35 | 98000 | 207000 | 4600 | 608 |
RNA4918 | 105 | 125 | 35 | 98500 | 239000 | 4000 | 713 |
RNA4919 | 110 | 130 | 35 | 112000 | 245000 | 3870 | 685 |
RNA4920 | 115 | 140 | 40 | 120000 | 264000 | 3710 | 1006 |
RNA4922 | 125 | 150 | 40 | 124000 | 270000 | 3350 | 1200 |
RNA4924 | 135 | 165 | 45 | 174000 | 386000 | 2920 | 1760 |
RNA4928 | 160 | 190 | 50 | 200000 | 460000 | 2900 | 2350 |
HK | Caged,with open and |
BK | Caged,with open ends |
F | Full complement,with open ends |
FH | Full complement,with open ends(heavy series) |
FY | Full complement, ,greased retained,with closed ends |
MF | Full complement,with closed ends |
MFH | Full complement,with closed ends(heavy series) |
MFY | Full complement,grease retained,with closed ends |
SCE | Caged,with oped ends |
BCE | Caged,with closed ends |
SCH | Caged,with open ends(heavy series) |
BCH | Caged,with closed ends(heavy series) |
SN | Full complement,grease retained,with open ends |
B | Full complement ,with open ends |
BH | Full complement,with open ends(heavy series) |
M | Full ciomplement,with closed ends |
MH | Full copmlement,with closed ends(heavy series) |