Item Description

The rings and balls of all-ceramic deep groove ball bearings are made of silicon nitride (Si3N4) ceramic material. This bearing can be designed as a complete ball or with PTFE, PEEK or stainless steel 304/316 cage. PTFE is the default normal cage.
Complete ceramic deep groove ball bearings have the characteristics of non-magnetic and electrical insulation, use-resistant and corrosion-resistant, oil-totally free and self-lubricating, higher temperature and cold resistance, and can be employed in incredibly harsh environments and specific doing work conditions. It can be employed in large temperature setting above 400ºC under the condition of complete ball or equipped with stainless metal 316 cage. The PEEK cage can also be used at temperatures above 250°C. For CZPT temperatures (for case in point, reduce than -70°C), total ceramic bearings with PTFE cages or stainless metal 316 cages can be used. Usually, the regular radial clearance is C0. When it is required to adapt to the extreme atmosphere, other clearances can be tailored.

About us
ZheJiang REET BEARING.CO.,LTD is a expert bearing maker and exporter.
We have a wealth of specialized.All making procedures are concluded in our manufactory. As an ISO9001:2000 accredited manufacturer,we will solve numerous problems in software and use of our bearings. 
Our business is an licensed distributor of FAG, INA, CZPT and other planet model bearings.Our firm has the appropriate to self-export bearings and launches its personal brand RTB.
Our bearing had been exported to far more than 20 countries around the world and are warmly welcomed.
We are looking forward to your purchase.
FAQ

1.Is the firm a creation factory or a investing firm?
ZheJiang REET BEARING CO.,LTD is a producing business concentrating on bearings and integrating analysis, generation and sales.

2.How several the MOQ of your company?
Dependent on the dimension of the bearing, the MOQ is variable, if you are intrigued, you can make contact with me for a quotation.

three.Does the organization accept OEM or tailored bearings?
In addition to normal items, we also offer non-regular and modified common goods for special application. Meanwhile, we supply OEM provider.

4.Can the firm offer cost-free samples?
We can give samples for free of charge. You only need to have to give transport.

five.What are the firm’s shipping terms?
We can take EXW,FOB,CFR,CIF,and so forth. You can decide on the 1 which is the most convenient value successful for you.
 

RTB model size(mm) Installation size(mm) weight weight
da Da ra
d D B r  (min) min max max (kg)  (kg) 
135 5 19 6 0.3 7 17 0.3 0.007 0.004
126 6 19 6 0.3 8 17 0.3 0.007 0.004
127 7 22 7 0.3 9 20 0.3 0.011 0.006
108 8 22 7 0.3 10 20 0.3 0.011 0.006
129 9 26 8 0.6 13 22 0.6 0.017 0.009
1200 10 30 9 0.6 14 26 0.6 0.026 0.014
2200 30 14 0.6 14 26 0.6 0.036 0.019
1300 25 11 0.6 14 31 0.6 0.045 0.024
2300 25 17 0.6 14 31 0.6 0.065 0.035
1201 12 32 10 0.6 16 28 0.6 0.031 0.016
2201 32 14 0.6 16 28 0.6 0.041 0.022
1301 37 12 1 17 32 1 0.052 0.027
2301 37 17 1 17 32 1 0.073 0.039
1202 15 35 11 0.6 19 31 0.6 0.038 0.02
2202 35 14 0.6 19 31 0.6 0.046 0.025
1302 42 13 1 20 37 1 0.072 0.039
2302 42 17 1 20 37 1 0.088 0.047
1203 17 40 12 0.6 21 36 0.6 0.056 0.03
2203 40 16 0.6 21 36 0.6 0.068 0.036
1303 47 14 1 22 42 1 0.1 0.053
2303 47 19 1 22 42 1 0.12 0.065
1204 20 47 14 1 25 42 1 0.09 0.049
2204 47 18 1 25 42 1 0.11 0.057
1304 52 15 1.1 26.5 45.5 1 0.13 0.067
1304 52 21 1.1 26.5 45.5 1 0.16 0.086
1205 25 52 15 1 30 47 1 0.11 0.058
2205 52 18 1 30 47 1 0.13 0.067
1305 62 17 1.1 31.5 55.5 1 0.2 0.11
2305 62 24 1.1 31.5 55.5 1 0.26 0.14
1206 30 62 16 1 35 57 1 0.17 0.09
2206 62 20 1 35 57 1 0.2 0.11
1306 72 19 1.1 36.5 65.5 1 0.3 0.16
2306 72 27 1.1 36.5 65.5 1 0.38 0.21
1207 35 72 17 1.1 41.5 65.5 1 0.25 0.13
2207 72 23 1.1 41.5 65.5 1 0.31 0.17
1307 80 21 1.5 43 72 1.5 0.39 0.21
2307 80 31 1.5 43 72 1.5 0.52 0.28
1208 40 80 18 1.1 46.5 73.5 1 0.32 0.17
2208 80 23 1.1 46.5 73.5 1 0.39 0.21
1308 90 23 1.5 48 82 1.5 0.55 0.29
2308 90 33 1.5 48 82 1.5 0.71 0.38
1209 45 85 19 1.1 51.5 78.5 1 0.36 0.19
2209 85 23 1.1 51.5 78.5 1 0.42 0.22
1309 100 25 1.5 53 92 1.5 0.74 0.39
2309 100 36 1.5 53 92 1.5 0.95 0.5
1210 50 90 20 1.1 56.5 83.5 1 0.4 0.22
2210 90 23 1.1 56.5 83.5 1 0.45 0.24
1310 110 27 2 59 101 2 0.93 0.5
2310 110 40 2 59 101 2 1.26 0.67
1211 55 100 21 1.5 63 92 1.5 0.54 0.29
2211 100 25 1.5 63 92 1.5 0.62 0.33
1311 120 29 2 64 111 2 1.22 0.65
2311 120 43 2 64 111 2 1.62 0.86
1212 60 110 22 1.5 68 102 1.5 0.69 0.37
2212 110 28 1.5 68 102 1.5 0.84 0.45
1312 130 31 2.1 71 119 2 1.51 0.8
2312 130 46 2.1 71 119 2 2 1.07
1213 65 120 23 1.5 73 112 1.5 0.88 0.47
2213 120 31 1.5 73 112 1.5 1.12 0.6
1313 140 33 2.1 76 129 2 1.88 1.01
2313 140 48 2.1 76 129 2 2.48 1.33
1214 70 125 24 1.5 78 117 1.5 0.97 0.52
2214 125 31 1.5 78 117 1.5 1.17 0.62
1314 150 35 2.1 81 139 2 2.3 1.23
2314 150 51 2.1 81 139 2 3.25 1.74
1215 75 130 25 1.5 83 122 1.5 1.05 0.56
2215 130 31 1.5 83 122 1.5 1.25 0.66
1216 80 140 26 2 89 131 2 1.28 0.69
2216 140 33 2 89 131 2 1.55 0.82
1217 85 150 28 2 94 141 2 1.59 0.85
2217 150 36 2 94 141 2 1.94 1.03
RTB model size(mm) Installation size(mm) weight weight
da Da ra
d D B r  (min) min max max (kg)  (kg) 
135 5 19 6 0.3 7 17 0.3 0.007 0.004
126 6 19 6 0.3 8 17 0.3 0.007 0.004
127 7 22 7 0.3 9 20 0.3 0.011 0.006
108 8 22 7 0.3 10 20 0.3 0.011 0.006
129 9 26 8 0.6 13 22 0.6 0.017 0.009
1200 10 30 9 0.6 14 26 0.6 0.026 0.014
2200 30 14 0.6 14 26 0.6 0.036 0.019
1300 25 11 0.6 14 31 0.6 0.045 0.024
2300 25 17 0.6 14 31 0.6 0.065 0.035
1201 12 32 10 0.6 16 28 0.6 0.031 0.016
2201 32 14 0.6 16 28 0.6 0.041 0.022
1301 37 12 1 17 32 1 0.052 0.027
2301 37 17 1 17 32 1 0.073 0.039
1202 15 35 11 0.6 19 31 0.6 0.038 0.02
2202 35 14 0.6 19 31 0.6 0.046 0.025
1302 42 13 1 20 37 1 0.072 0.039
2302 42 17 1 20 37 1 0.088 0.047
1203 17 40 12 0.6 21 36 0.6 0.056 0.03
2203 40 16 0.6 21 36 0.6 0.068 0.036
1303 47 14 1 22 42 1 0.1 0.053
2303 47 19 1 22 42 1 0.12 0.065
1204 20 47 14 1 25 42 1 0.09 0.049
2204 47 18 1 25 42 1 0.11 0.057
1304 52 15 1.1 26.5 45.5 1 0.13 0.067
1304 52 21 1.1 26.5 45.5 1 0.16 0.086
1205 25 52 15 1 30 47 1 0.11 0.058
2205 52 18 1 30 47 1 0.13 0.067
1305 62 17 1.1 31.5 55.5 1 0.2 0.11
2305 62 24 1.1 31.5 55.5 1 0.26 0.14
1206 30 62 16 1 35 57 1 0.17 0.09
2206 62 20 1 35 57 1 0.2 0.11
1306 72 19 1.1 36.5 65.5 1 0.3 0.16
2306 72 27 1.1 36.5 65.5 1 0.38 0.21
1207 35 72 17 1.1 41.5 65.5 1 0.25 0.13
2207 72 23 1.1 41.5 65.5 1 0.31 0.17
1307 80 21 1.5 43 72 1.5 0.39 0.21
2307 80 31 1.5 43 72 1.5 0.52 0.28
1208 40 80 18 1.1 46.5 73.5 1 0.32 0.17
2208 80 23 1.1 46.5 73.5 1 0.39 0.21
1308 90 23 1.5 48 82 1.5 0.55 0.29
2308 90 33 1.5 48 82 1.5 0.71 0.38
1209 45 85 19 1.1 51.5 78.5 1 0.36 0.19
2209 85 23 1.1 51.5 78.5 1 0.42 0.22
1309 100 25 1.5 53 92 1.5 0.74 0.39
2309 100 36 1.5 53 92 1.5 0.95 0.5
1210 50 90 20 1.1 56.5 83.5 1 0.4 0.22
2210 90 23 1.1 56.5 83.5 1 0.45 0.24
1310 110 27 2 59 101 2 0.93 0.5
2310 110 40 2 59 101 2 1.26 0.67
1211 55 100 21 1.5 63 92 1.5 0.54 0.29
2211 100 25 1.5 63 92 1.5 0.62 0.33
1311 120 29 2 64 111 2 1.22 0.65
2311 120 43 2 64 111 2 1.62 0.86
1212 60 110 22 1.5 68 102 1.5 0.69 0.37
2212 110 28 1.5 68 102 1.5 0.84 0.45
1312 130 31 2.1 71 119 2 1.51 0.8
2312 130 46 2.1 71 119 2 2 1.07
1213 65 120 23 1.5 73 112 1.5 0.88 0.47
2213 120 31 1.5 73 112 1.5 1.12 0.6
1313 140 33 2.1 76 129 2 1.88 1.01
2313 140 48 2.1 76 129 2 2.48 1.33
1214 70 125 24 1.5 78 117 1.5 0.97 0.52
2214 125 31 1.5 78 117 1.5 1.17 0.62
1314 150 35 2.1 81 139 2 2.3 1.23
2314 150 51 2.1 81 139 2 3.25 1.74
1215 75 130 25 1.5 83 122 1.5 1.05 0.56
2215 130 31 1.5 83 122 1.5 1.25 0.66
1216 80 140 26 2 89 131 2 1.28 0.69
2216 140 33 2 89 131 2 1.55 0.82
1217 85 150 28 2 94 141 2 1.59 0.85
2217 150 36 2 94 141 2 1.94 1.03

How to Replace a Bearing

If you want to select a bearing for a specific application, you should know a few basics. This article will give you an overview of ball, angular contact, and sliding-contact bearings. You can choose a bearing according to the application based on the characteristics of its material and preload. If you are not sure how to choose a bearing, try experimenting with it. The next step is to understand the Z-axis, which is the axes along which the bearing moves.

Z axis

When it comes to replacing your Z axis bearing, there are several things you must know. First, you need to make sure that the bearings are seated correctly. Then, you should check the tension and rotation of each one. To ensure that both bearings are equally tensioned, you should flex the Core to the desired angle. This will keep the Z axis perpendicular to the work surface. To do this, first remove the Z axis bearing from its housing and insert it into the Z axis motor plate. Next, insert the flanged bearing into the Z axis motor plate and secure it with two M5x8mm button head cap screws.
Make sure that the bearing plate and the Z Coupler part are flush and have equal spacing. The spacing between the two parts is important, as too much spacing will cause the leadscrew to become tight. The screws should be very loose, with the exception of the ones that engage the nylocks. After installing the bearing, the next step is to start the Z axis. Once this is done, you’ll be able to move it around with a stepper.

Angular contact

bearing
Ball bearings are made with angular contacts that result in an angle between the bearing’s races. While the axial load moves in one direction through the bearing, the radial load follows a curved path, tending to separate the races axially. In order to minimize this frictional effect, angular contact bearings are designed with the same contact angle on the inner and outer races. The contact angle must be chosen to match the relative proportions of the axial and radial loads. Generally, a larger contact angle supports a higher axial load, while reducing radial load.
Ball bearings are the most common type of angular contact bearings. Angular contact ball bearings are used in many applications, but their primary purpose is in the spindle of a machine tool. These bearings are suitable for high-speed, precision rotation. Their radial load capacity is proportional to the angular contact angle, so larger contact angles tend to enlarge with speed. Angular contact ball bearings are available in single and double-row configurations.
Angular contact ball bearings are a great choice for applications that involve axial loads and complex shapes. These bearings have raceways on the inner and outer rings and mutual displacement along the axial axis. Their axial load bearing capacity increases as the contact Angle a rises. Angular contact ball bearings can withstand loads up to five times their initial weight! For those who are new to bearings, there are many resources online dedicated to the subject.
Despite their complexity, angular contact ball bearings are highly versatile and can be used in a wide range of applications. Their angular contact enables them to withstand moderate radial and thrust loads. Unlike some other bearings, angular contact ball bearings can be positioned in tandem to reduce friction. They also feature a preload mechanism that removes excess play while the bearing is in use.
Angular contact ball bearings are made with different lubricants and cage materials. Standard cages for angular contact ball bearings correspond to Table 1. Some are machined synthetic resins while others are molded polyamide. These cage materials are used to further enhance the bearing’s axial load capacity. Further, angular contact ball bearings can withstand high speeds and radial loads. Compared to radial contact ball bearings, angular contact ball bearings offer the greatest flexibility.

Ball bearings

bearing
Ball bearings are circular structures with two separate rings. The smaller ring is mounted on a shaft. The inner ring has a groove on the outer diameter that acts as a path for the balls. Both the inner and outer ring surfaces are finished with very high precision and tolerance. The outer ring is the circular structure with the rolling elements. These elements can take many forms. The inner and outer races are generally made of steel or ceramic.
Silicon nitride ceramic balls have good corrosion resistance and lightweight, but are more expensive than aluminum oxide balls. They also exhibit an insulating effect and are self-lubricating. Silicon nitride is also suitable for high-temperature environments. However, this type of material has the disadvantage of wearing out rapidly and is prone to cracking and shattering, as is the case with bearing steel and glass. It’s also less resistant to heat than aluminum oxide, so it’s best to buy aluminum nitride or ceramic ball bearings for applications that are subjected to extremely high temperatures.
Another type of ball bearings is the thrust bearing. It has a special design that accommodates forces in both axial and radial directions. It is also called a bidirectional bearing because its races are side-by-side. Axial ball bearings use a side-by-side design, and axial balls are used when the loads are transmitted through the wheel. However, they have poor axial support and are prone to separating during heavy radial loads.
The basic idea behind ball bearings is to reduce friction. By reducing friction, you’ll be able to transfer more energy, have less erosion, and improve the life of your machine. With today’s advances in technology, ball bearings can perform better than ever before. From iron to steel to plastics, the materials used in bearings have improved dramatically. Bearings may also incorporate an electromagnetic field. So, it’s best to select the right one for your machine.
The life expectancy of ball bearings depends on many factors, including the operating speed, lubrication, and temperature. A single million-rpm ball bearing can handle between one and five million rotations. As long as its surface contact area is as small as possible, it’s likely to be serviceable for at least one million rotations. However, the average lifespan of ball bearings depends on the application and operating conditions. Fortunately, most bearings can handle a million or more rotations before they start showing signs of fatigue.

Sliding-contact bearings

bearing
The basic principle behind sliding-contact bearings is that two surfaces move in contact with one another. This type of bearing works best in situations where the surfaces are made of dissimilar materials. For instance, a steel shaft shouldn’t run in a bronze-lined bore, or vice versa. Instead, one element should be harder than the other, since wear would concentrate in that area. In addition, abrasive particles tend to force themselves into the softer surface, causing a groove to wear in that part.
Sliding-contact bearings have low coefficients of friction and are commonly used in low-speed applications. Unlike ball and roller bearings, sliding contact bearings have to be lubricated on both sides of the contacting surfaces to minimize wear and tear. Sliding-contact bearings generally are made of ceramics, brass, and polymers. Because of their lower friction, they are less accurate than rolling-element bearings.
Sliding-contact bearings are also known as plain or sleeve bearings. They have a sliding motion between their two surfaces, which is reduced by lubrication. This type of bearing is often used in rotary applications and as guide mechanisms. In addition to providing sliding action, sliding-contact bearings are self-lubricating and have high load-carrying capacities. They are typically available in two different types: plain bearings and thrust bearings.
Sliding-contact linear bearing systems consist of a moving structure (called the carriage or slide) and the surfaces on which the two elements slide. The surfaces on which the bearing and journal move are called rails, ways, or guides. A bore hole is a complex geometry, and a minimum oil film thickness h0 is usually used at the line of centers. It is possible to have a sliding-contact bearing in a pillow block.
Because these bearings are porous, they can absorb 15 to 30% of the lubrication oil. This material is commonly used in automobile and machine tools. Many non-metallic materials are used as bearings. One example is rubber, which offers excellent shock absorbency and embeddability. While rubber has poor strength and thermal conductivity, it is commonly used in deep-well pumps and centrifugal pumps. This material has high impact strength, but is not as rigid as steel.