NUTR type support roller NUTR series support rollers are double-row full complement roller bearings, and the outer ring is guided by ribs. All parts of the bearing form a complete unit by the sealing cover pressed into the outer ring, and the sealing cover and the thrust retaining ring together form an efficient gap seal. This kind of support rollers can bear very heavy loads. Due to the axial guidance of the rolling elements, they can bear impact axial loads even at high speeds.
Widely used in automobile, compressor, construction, motor, food industry, household appliances and so on.
| Model | Weight | d | D | C | B1 | B2 | G | G1 | |
| No Seal | Reference model | (gram) | mm | mm | mm | mm | mm | mm | |
| CF 3 | KR10 | 4.5 | 3 | 10 | 7 | 17 | 9 | M3X0.5 | 5 |
| CF 4 | KR12 | 7.5 | 4 | 12 | 8 | 20 | 11 | M4X0.7 | 6 |
| CF 5 | KR13 | 10.5 | 5 | 13 | 9 | 23 | 13 | M5X0.8 | 7.5 |
| CF 6 | KR16 | 18.5 | 6 | 16 | 11 | 28 | 16 | M6X1 | 8 |
| CF 8 | KR19 | 28.5 | 8 | 19 | 11 | 32 | 20 | M8X1.25 | 10 |
| CF10 | KR22 | 45 | 10 | 22 | 12 | 36 | 23 | M10X1.25 | 12 |
| CF10-1 | KR26 | 60 | 10 | 26 | 12 | 36 | 23 | M10X1.25 | 12 |
| CF12 | KR30 | 95 | 12 | 30 | 14 | 40 | 25 | M12X1.5 | 13 |
| CF12-1 | KR32 | 105 | 12 | 32 | 14 | 40 | 25 | M12X1.5 | 13 |
| CF16 | KR35 | 170 | 16 | 35 | 18 | 52 | 32.5 | M16X1.5 | 17 |
| CF18 | KR40 | 250 | 18 | 40 | 20 | 58 | 36.5 | M18X1.5 | 19 |
| CF20 | KR47 | 460 | 20 | 47 | 24 | 66 | 40.5 | M20X1.5 | 21 |
| CF20-1 | KR52 | 385 | 20 | 52 | 29 | 66 | 40.5 | M20X1.5 | 21 |
| CF24 | KR62 | 815 | 24 | 62 | 29 | 80 | 49.5 | M24X1.5 | 25 |
| CF24-1 | KR72 | 1,140 | 24 | 72 | 29 | 80 | 49.5 | M24X1.5 | 25 |
| CF30 | KR80 | 1,870 | 30 | 80 | 35 | 100 | 63 | M30X1.5 | 32 |
| CF30-1 | KR85 | 2.03 | 30 | 85 | 35 | 100 | 63 | M30X1.5 | 32 |
| CF30-2 | KR90 | 2,220 | 30 | 90 | 35 | 100 | 63 | M30X1.5 | 32 |
News
FAQ
1What should we pay attention to in the maintenance of IKO needle roller bearing match lubrication?
The following four points should be emphasized in the selection of cooperation:
(1) The circumferocity of bearing rings should be well supported and stressed evenly to reduce deformation and give full play to the bearing capacity of IKO bearings.
(2) The ring shall not slide along the tangent direction in the mating surface, otherwise the mating surface will be damaged.
(3) The free end bearing must be able to adapt to the change of the length of the shaft and bearing seat hole, that is, it must have the ability to adapt to the axial position of swimming within a certain range.
(4) Attention must be paid to making the installation and disassembly of needle roller bearings simple, save labor, time and expense.
2What are the common damage causes that affect the life of IKO needle roller bearings?
1. Reasonable and accurate installation to ensure the normal operation of bearings
(1) Clean bearings and bearing connected parts
(2) Check the size and finishing of the related parts
(3) Installation
(4) Check the bearings after installation
(5) Provide lubricant
2. After installation and use, the bearing should be tracked and monitored
During use, the basic external conditions of needle bearing operation should be monitored frequently, such as temperature, vibration and noise measurement and so on. These regular checks will identify potential problems early and will prevent unexpected machine outages, enabling production schedules to be realized and increasing plant productivity and efficiency.
3. Complete the re-lubrication correctly and reasonably
In the operation process, the IKO bearing requires correct re-lubrication to perfect its performance.
4, bearing unloading should be careful
(1) The use of tools for proper unloading methods will help prevent damage to other machine components,
(2) Improper unloading techniques may cause harm to the operator.
3What is the method for determining the running track and loading of IKO needle roller bearings?
1) Use the bearing working condition monitoring instrument
It is the most convenient and reliable method to use such as iron spectrometer or SPM or I-ID - 1 bearing working state monitoring instrument to judge the working state of needle roller bearings and decide when IKO bearings should be repaired.
For example, when the HD-1 instrument is used, when the pointer is close to the danger zone from the warning area, and the pointer does not return after taking measures such as improving lubrication, it can be determined that the problem is the bearing itself. At this time, the bearing can be reported for repair while it is not yet in the danger zone. How far from the danger zone to begin repair can be adjusted by experience.
The use of such instruments can make full use of the working potential of bearings, report IKO bearings for repair in time, and avoid failure, which is safe and economic.
2) Listen with simple tools
In the absence of the above instruments, the operator can hold a round rod or wrench and other tools against the machine shell parts closest to the bearing, and listen to the needle roller bearing running sound from the tool on the ear. Of course, the use of medical stethoscope can also be modified.
Normal IKO bearing running sound should be uniform, smooth and not harsh sound, while abnormal bearing running sound has a variety of intermittent, impact or harsh sounds. First of all, we should get used to the normal running sound of bearings, and then we can grasp and judge the abnormal running sound of bearings. Then, through the accumulation of practical experience, we can further analyze what kind of abnormal sound corresponds to what kind of abnormal bearing phenomenon. There are many types of abnormal bearing sounds, which are difficult to describe and mainly rely on experience accumulation.
