China Supplier China Open Type Constant Cross Section 4-Point Contact Ball Bearings Ka120XP0 Kb020XP0 Kb025XP0 Kb030XP0 Kb035XP0 Kb040XP0 Kb042XP0 Kb045XP0 Textile Industry
With our rich experience and considerate services, we have been recognized as a reliable supplier for many international buyers for China Supplier China Open Type Constant Cross Section 4-Point Contact Ball Bearings Ka120XP0 Kb020XP0 Kb025XP0 Kb030XP0 Kb035XP0 Kb040XP0 Kb042XP0 Kb045XP0 Textile Industry, Our merchandise have exported to North America, Europe, Japan, Korea, Australia, New Zealand, Russia and other countries. On the lookout ahead to create up a fantastic and long lasting cooperation along with you in coming foreseeable future!
With our rich experience and considerate services, we have been recognized as a reliable supplier for many international buyers for China Thin-Walled Bearings, Kaa10cp0, We have now sufficient experience in producing products according to samples or drawings. We warmly welcome customers from home and abroad to visit our company, and to cooperate with us for a splendid future together.
Introduction
Four-point contact ball bearings are radial single row angular contact ball bearings with raceways that are designed to support axial loads in both directions. For a given axial load, a limited radial load can also be supported. The bearings are separable, i.e. the outer ring with ball and cage assembly can be mounted separately from the two inner ring halves.
Both inner ring halves of Explorer four-point contact ball bearings have a recessed shoulder. This improves oil flow when the bearing is used in combination with an cylindrical roller bearing. In addition, these recesses can be used to facilitate dismounting.
Features and Benefits
- ●Accommodates axial loads in both directions
- ●Less axial space
These bearings take up considerably less axial space than double row bearings. - ●High load carrying capacity
A large number of balls are incorporated, giving the bearing its high load carrying capacity. - ●Separable design
The split inner ring leads to easier mounting and dismounting of the bearing. - ●Improved oil flo
- Limited inner ring deformation when subjected to high clamping forces.
Function
When only pure axial loads are applied, the ball and ring form a two-point contact capable of bearing bidirectional axial loads. Four point contact ball bearings are ok.
Bearing torque load, it has the functions of single row angular contact ball bearing and double row angular contact ball bearing. The four-point contact ball bearing can work normally only when the two point contact is formed. Therefore, it is generally suitable for those pure axial load or large axial load under the composite load of two-point contact, four-point contact ball bearing limit speed is high, but also suitable for those high-speed operation occasions.
Characteristics
The four-point contact ball bearing is a separable structure, and a single bearing can replace the angular contact ball bearing with the front combination or the back combination.
It can bear radial load and bidirectional axial load, and can limit the axial displacement in two directions, but it occupies less axial space than the current specification double row angular contact ball bearing.
Compared with other ball bearings, four-point contact ball bearings have smaller axial clearance and higher limit speed when the radial clearance is the same.
Four-point contact ball bearings are suitable for bearing pure axial loads or combined axial and radial loads based on axial loads. Due to the double-half inner ring (or outer ring), the number of balls is increased and the bearing capacity is larger.
Under normal working conditions, this type of bearing can form a contact angle when bearing axial load in any direction, and the steel ball is in contact with the inner and outer raceways at one point to avoid large sliding friction in the contact area. Therefore, the bearing should not be subjected to radial forces and loads.
Parameters
SIZE | Principal dimensions | Basic load ratings | Fatigue load limit | Speed ratings | |||
dynamic | static | Limiting speed | |||||
d[mm] | D[mm] | B[mm] | C[kN] | C0[kN] | Pu[kN] | [r/min] | |
QJ 202 N2MA | 15 | 35 | 11 | 12.7 | 8.3 | 0.355 | 36000 |
QJ 203 N2MA | 17 | 40 | 12 | 17 | 11.4 | 0.48 | 30000 |
QJ 303 N2MA | 17 | 47 | 14 | 23.4 | 15 | 0.64 | 28000 |
QJ 304 MA | 20 | 52 | 15 | 32 | 21.6 | 0.93 | 24000 |
QJ 304 N2MA | 20 | 52 | 15 | 32 | 21.6 | 0.93 | 24000 |
QJ 304 N2PHAS | 20 | 52 | 15 | 32 | 21.6 | 0.93 | 24000 |
QJ 205 MA | 25 | 52 | 15 | 27 | 21.2 | 0.9 | 22000 |
QJ 305 MA | 25 | 62 | 17 | 42.5 | 30 | 1.27 | 20000 |
QJ 305 N2MA | 25 | 62 | 17 | 42.5 | 30 | 1.27 | 20000 |
QJ 206 MA | 30 | 62 | 16 | 37.5 | 30.5 | 1.29 | 19000 |
QJ 206 N2MA | 30 | 62 | 16 | 37.5 | 30.5 | 1.29 | 19000 |
QJ 306 MA | 30 | 72 | 19 | 53 | 41.5 | 1.76 | 17000 |
QJ 306 N2MA | 30 | 72 | 19 | 53 | 41.5 | 1.76 | 17000 |
QJ 306 N2PHAS | 30 | 72 | 19 | 53 | 41.5 | 1.76 | 17000 |
QJ 207 N2MA | 35 | 72 | 17 | 49 | 41.5 | 1.76 | 17000 |
QJ 307 MA | 35 | 80 | 21 | 64 | 51 | 2.16 | 15000 |
QJ 307 N2MA | 35 | 80 | 21 | 64 | 51 | 2.16 | 15000 |
QJ 307 N2PHAS | 35 | 80 | 21 | 64 | 51 | 2.16 | 15000 |
QJ 208 MA | 40 | 80 | 18 | 56 | 49 | 2.08 | 15000 |
QJ 208 N2MA | 40 | 80 | 18 | 56 | 49 | 2.08 | 15000 |
QJ 208 PHAS | 40 | 80 | 18 | 56 | 49 | 2.08 | 15000 |
QJ 308 MA | 40 | 90 | 23 | 78 | 64 | 2.7 | 14000 |
QJ 308 N2PHAS | 40 | 90 | 23 | 78 | 64 | 2.7 | 14000 |
QJ 209 MA | 45 | 85 | 19 | 63 | 56 | 2.36 | 14000 |
QJ 309 MA | 45 | 100 | 25 | 100 | 83 | 3.55 | 12000 |
QJ 309 N2MA | 45 | 100 | 25 | 100 | 83 | 3.55 | 12000 |
QJ 309 N2PHAS | 45 | 100 | 25 | 100 | 83 | 3.55 | 12000 |
QJ 309 PHAS | 45 | 100 | 25 | 100 | 83 | 3.55 | 12000 |
QJ 210 MA | 50 | 90 | 20 | 65.5 | 61 | 2.6 | 13000 |
QJ 310 MA | 50 | 110 | 27 | 118 | 100 | 4.25 | 11000 |
QJ 310 PHAS | 50 | 110 | 27 | 118 | 100 | 4.25 | 11000 |
QJ 211 MA | 55 | 100 | 21 | 85 | 83 | 3.55 | 11000 |
QJ 311 MA | 55 | 120 | 29 | 137 | 118 | 5 | 10000 |
QJ 311 N2MA | 55 | 120 | 29 | 137 | 118 | 5 | 10000 |
QJ 212 MA | 60 | 110 | 22 | 96.5 | 93 | 4 | 10000 |
QJ 212 N2MA | 60 | 110 | 22 | 96.5 | 93 | 4 | 10000 |
QJ 212 N2PHAS | 60 | 110 | 22 | 96.5 | 93 | 4 | 10000 |
QJ 312 MA | 60 | 130 | 31 | 156 | 137 | 5.85 | 9000 |
QJ 312 PHAS | 60 | 130 | 31 | 156 | 137 | 5.85 | 9000 |
QJ 213 MA | 65 | 120 | 23 | 110 | 112 | 4.75 | 9500 |
QJ 213 N2MA | 65 | 120 | 23 | 110 | 112 | 4.75 | 9500 |
QJ 213 N2PHAS | 65 | 120 | 23 | 110 | 112 | 4.75 | 9500 |
QJ 313 MA | 65 | 140 | 33 | 176 | 156 | 6.55 | 8500 |
QJ 313 N2PHAS | 65 | 140 | 33 | 176 | 156 | 6.55 | 8500 |
QJ 214 N2MA | 70 | 125 | 24 | 120 | 122 | 5.2 | 9000 |
QJ 214 N2PHAS | 70 | 125 | 24 | 120 | 122 | 5.2 | 9000 |
QJ 314 MA | 70 | 150 | 35 | 200 | 180 | 7.35 | 8000 |
QJ 314 N2MA | 70 | 150 | 35 | 200 | 180 | 7.35 | 8000 |
QJ 314 N2PHAS | 70 | 150 | 35 | 200 | 180 | 7.35 | 8000 |
QJ 215 MA | 75 | 130 | 25 | 125 | 132 | 5.6 | 8500 |
QJ 215 N2MA | 75 | 130 | 25 | 125 | 132 | 5.6 | 8500 |
QJ 215 N2PHAS | 75 | 130 | 25 | 125 | 132 | 5.6 | 8500 |
QJ 315 N2MA | 75 | 160 | 37 | 216 | 200 | 7.8 | 7500 |
QJ 315 N2PHAS | 75 | 160 | 37 | 216 | 200 | 7.8 | 7500 |
QJ 216 MA | 80 | 140 | 26 | 146 | 156 | 6.4 | 8000 |
QJ 216 N2MA | 80 | 140 | 26 | 146 | 156 | 6.4 | 8000 |
QJ 316 N2MA | 80 | 170 | 39 | 232 | 228 | 8.65 | 7000 |
QJ 316 N2PHAS | 80 | 170 | 39 | 232 | 228 | 8.65 | 7000 |
QJ 1017 N2MA/C4 | 85 | 130 | 22 | 99.5 | 114 | 4.65 | 8000 |
QJ 217 MA | 85 | 150 | 28 | 156 | 173 | 6.7 | 7500 |
QJ 217 N2MA | 85 | 150 | 28 | 156 | 173 | 6.7 | 7500 |
QJ 317 N2MA | 85 | 180 | 41 | 250 | 255 | 8.65 | 6700 |
QJ 218 N2MA | 90 | 160 | 30 | 186 | 200 | 7.65 | 7000 |
QJ 318 N2MA | 90 | 190 | 43 | 285 | 305 | 11 | 6300 |
QJ 318 N2PHAS | 90 | 190 | 43 | 285 | 305 | 11 | 6300 |
QJ 219 N2MA | 95 | 170 | 32 | 212 | 232 | 8.5 | 6700 |
QJ 219 N2PHAS | 95 | 170 | 32 | 212 | 232 | 8.5 | 6700 |
QJ 319 N2MA | 95 | 200 | 45 | 305 | 340 | 11.8 | 6000 |
QJ 319 N2PHAS | 95 | 200 | 45 | 305 | 340 | 11.8 | 6000 |
QJ 220 N2MA | 100 | 180 | 34 | 236 | 265 | 9.5 | 6300 |
QJ 320 N2MA | 100 | 215 | 47 | 345 | 400 | 13.7 | 5600 |
QJ 1021 N2MA/C4 | 105 | 160 | 26 | 135 | 170 | 6.3 | 6700 |
QJ 1022 N2MA/C4 | 110 | 170 | 28 | 153 | 193 | 6.8 | 6300 |
QJ 222 N2MA | 110 | 200 | 38 | 280 | 325 | 11.2 | 5600 |
QJ 322 N2MA | 110 | 240 | 50 | 390 | 480 | 15.3 | 4800 |
QJ 224 N2MA | 120 | 215 | 40 | 300 | 365 | 12 | 5000 |
QJ 324 N2MA | 120 | 260 | 55 | 415 | 530 | 16.3 | 4500 |
QJ 226 N2MA | 130 | 230 | 40 | 310 | 400 | 12.7 | 4800 |
QJ 326 N2MA | 130 | 280 | 58 | 455 | 610 | 18 | 4000 |
QJ 228 N2MA | 140 | 250 | 42 | 345 | 475 | 14.3 | 4300 |
QJ 328 N2MA | 140 | 300 | 62 | 500 | 695 | 20 | 3800 |
QJ 1030 N2MA | 150 | 225 | 35 | 242 | 335 | 10.4 | 4500 |
QJ 230 N2MA | 150 | 270 | 45 | 400 | 570 | 16.6 | 4000 |
QJ 330 N2MA | 150 | 320 | 65 | 530 | 765 | 21.2 | 3600 |
QJ 1032 N2MA | 160 | 240 | 38 | 270 | 380 | 11.4 | 4300 |
QJ 232 N2MA | 160 | 290 | 48 | 450 | 670 | 19 | 3800 |
QJ 332 N2MA | 160 | 340 | 68 | 570 | 880 | 23.6 | 3400 |
QJ 234 N2MA | 170 | 310 | 52 | 455 | 720 | 20 | 3400 |
QJ 334 N2MA | 170 | 360 | 72 | 655 | 1040 | 27 | 3200 |
QJ 236 N2MA | 180 | 320 | 52 | 475 | 765 | 20.8 | 3400 |
QJ 336 N2MA | 180 | 380 | 75 | 680 | 1100 | 28 | 3000 |
QJ 1038 N2MA | 190 | 290 | 46 | 364 | 560 | 15.3 | 3400 |
QJ 238 N2MA | 190 | 340 | 55 | 510 | 850 | 22.4 | 3200 |
QJ 338 N2MA | 190 | 400 | 78 | 702 | 1160 | 28.5 | 2800 |
QJ 1040 N2MA | 200 | 310 | 51 | 390 | 620 | 16.6 | 3200 |
QJ 240 N2MA | 200 | 360 | 58 | 540 | 915 | 23.2 | 3000 |
QJ 1240 N2MA | 200 | 360 | 70 | 520 | 865 | 21.6 | 3000 |
QJ 1244 N2MA | 220 | 400 | 78 | 592 | 1020 | 24.5 | 2600 |
QJ 344 N2MA | 220 | 460 | 88 | 780 | 1400 | 32 | 2400 |
QJ 344 N2/309829 | 220 | 460 | 88 | 904 | 1660 | 38 | 2400 |
QJ 248 N2MA | 240 | 440 | 72 | 650 | 1200 | 27.5 | 2400 |
QJ 1248 MA/344524 | 240 | 440 | 85 | 663 | 1220 | 28 | 2400 |
QJ 252 N2MA | 260 | 480 | 80 | 728 | 1430 | 32 | 2200 |
QJ 1252 N2MA | 260 | 480 | 90 | 741 | 1460 | 32 | 2200 |
QJ 1056 N2MA/C4 | 280 | 420 | 65 | 585 | 1140 | 25.5 | 2400 |
QJ 1256 N2MA | 280 | 500 | 90 | 728 | 1460 | 31.5 | 2000 |
QJ 1060 MA | 300 | 460 | 74 | 702 | 1430 | 31 | 2200 |
QJ 1260 N2MA | 300 | 540 | 98 | 832 | 1760 | 36.5 | 1900 |
QJ 1064 MA | 320 | 480 | 74 | 715 | 1530 | 32 | 2000 |
QJ 1064 N2MA | 320 | 480 | 74 | 715 | 1530 | 32 | 2000 |
QJ 1264 N2MA | 320 | 580 | 105 | 956 | 2080 | 41.5 | 1700 |
QJ 1068 N2MA | 340 | 520 | 82 | 780 | 1700 | 35.5 | 1800 |
QJ 1268 MA/344524 | 340 | 620 | 118 | 1060 | 2450 | 47.5 | 1600 |
QJ 1072 N2MA | 360 | 540 | 82 | 852 | 1930 | 38 | 1700 |
QJ 1272 N2MA | 360 | 650 | 122 | 1110 | 2600 | 49 | 1500 |
QJ 1076 N2MA | 380 | 560 | 82 | 884 | 2040 | 40 | 1600 |
QJ 1276 N2MA | 380 | 680 | 132 | 1170 | 2850 | 52 | 1400 |
QJ 1080 N2MA | 400 | 600 | 90 | 904 | 2160 | 40.5 | 1500 |
QJ 1280 N2MA | 400 | 720 | 140 | 1300 | 3250 | 58.5 | 1300 |
QJ 1084 N2MA | 420 | 620 | 90 | 923 | 2280 | 42.5 | 1500 |
QJ 1284 N2MA | 420 | 760 | 150 | 1430 | 3750 | 64 | 1300 |
QJ 1988 N2MA | 440 | 600 | 74 | 761 | 1900 | 35.5 | 1500 |
QJ 1088 N2MA | 440 | 650 | 94 | 995 | 2500 | 45.5 | 1400 |
QJ 1288 N2MA | 440 | 790 | 155 | 1400 | 3750 | 64 | 1200 |
QJ 1092 N2MA | 460 | 680 | 100 | 1040 | 2650 | 46.5 | 1300 |
QJ 1292 N2MA | 460 | 830 | 165 | 1530 | 4250 | 69.5 | 1100 |
QJ 1096 N2MA | 480 | 700 | 100 | 1060 | 2800 | 48 | 1300 |
QJ 1296 N2MA | 480 | 870 | 170 | 1680 | 4750 | 76.5 | 1100 |
With our rich experience and considerate services, we have been recognized as a reliable supplier for many international buyers for China Supplier China Open Type Constant Cross Section 4-Point Contact Ball Bearings Ka120XP0 Kb020XP0 Kb025XP0 Kb030XP0 Kb035XP0 Kb040XP0 Kb042XP0 Kb045XP0 Textile Industry, Our merchandise have exported to North America, Europe, Japan, Korea, Australia, New Zealand, Russia and other countries. On the lookout ahead to create up a fantastic and long lasting cooperation along with you in coming foreseeable future!
China Supplier China Thin-Walled Bearings, Kaa10cp0, We have now sufficient experience in producing products according to samples or drawings. We warmly welcome customers from home and abroad to visit our company, and to cooperate with us for a splendid future together.