China Standard Inched/Metric 30000 Tapered Roller Bearing for Yoyo Ball/Roller Skate/Wind Turbine/Hydraulic Turbine/Precise Instrument/Gear Reducer/Shredder/Cutting Machine bearing air

Product Description

All sizes of thrust ball bearing could be supplied by us. We use professional bearing steel as the raw material to produce high quality bearing. They are with the following advantages.
1.high rotating speeds
2.low noise,low friction coefficient,low vibration 
3.radial and axial loads are available
4.easy to mount
5.low maintenance frequency

Product Description

Name: 30000 tapered roller  bearing for heavy machinery
Type: Tapered Roller Bearing/Taper Roller Bearing
Material: Bearing steel 
Cage: Steel Cage and Nylon Cage
Rolling body: Roller
Material Bearing Steel 
Number of Row Single Row
Noise Level Z1,Z2,Z3
Vibration V1,V2,V3
Advantages High Quality, Competitive Price, Durable
Application Area Crane hook, vertical water pump, vertical centrifuge, jack, low-speed reducer
Brand DNT or Customized
Package Type 1.Plastic Tube+Carton+Pallet 
2.Plastic bag+Single color box+Carton+Pallet 
3.industrial package
4.According to your requirement
Delivery time 3-10 days depends on quantity needed

 

 

Product Parameters

Various types Tapered Roller Bearings:

Tapered Roller Bearing
30000 Series Tapered Roller Bearing
Bearing No. Dimensions(mm) Weight(kg)
d D T
35712 15 35 11 0.053
35713 17 40 13.25 0.079
35714 20 47 15.25 0.126
35715 25 52 16.25 0.154
35716 30 62 17.25 0.231
35717 35 72 18.25 0.331
35718 40 80 19.75 0.422
35719 45 85 20.75 0.474
35710 50 90 21.75 0.529
35711 55 100 22.75 0.713
35712 60 110 23.75 0.904
35713 65 120 24.75 1.13
35714 70 125 26.25 1.26
35715 75 130 27.25 1.36
35716 80 140 28.5 1.65
35717 85 150 31 2.1
35718 90 160 33 2.52
35719 95 170 35 3.17
35710 100 180 37.5 3.8
35711 105 190 39.5 4.5
35712 110 200 41.5 5.16
35714 120 215 44 6.27
30302 15 42 13 0.098
30303 17 47 15.25 0.129
30304 20 52 16.25 0.165
30305 25 62 18.25 0.263
30306 30 72 20.75 0.387
30307 35 80 22.75 0.515
30308 40 90 25.25 0.747
30309 45 100 27.25 0.984
3571 50 110 29.25 1.28
3571 55 120 31.5 1.63
3571 60 130 33.5 1.99
3571 65 140 36 2.44
3571 70 150 38 2.98
3571 75 160 40 3.57
3 0571 80 170 43 4.5
3 0571 85 180 45 5.25
3 0571 90 190 47 5.79
3571 95 200 50 7.2
30320 100 215 52 8.27
30321 105 225 54 10.5
30322 110 290 55 11.4
Tapered Roller Bearing
31000 Series Tapered Roller Bearing
Bearing No. Dimensions(mm) Weight
d D B
31303 17 47 15 0.13
31304 20 52 16.5 0.17
31305 25 62 18.5 0.26
31306 30 72 21 0.38
31307 35 80 23 0.517
31308 40 90 25.5 0.66
31309 45 100 27.5 0.974
31310 50 110 29.5 1.23
31311 55 120 32 1.5
31312 60 130 34 1.92
31313 65 140 36.5 2.29
31314 70 150 38.5 2.87
31315 75 160 40 3.43
31316 80 170 42.5 4.09
31317 85 180 45 4.91
32000 Series Tapered Roller Bearing
Bearing No. Dimensions(mm) Weight
d D B
32203 17 40 17.25 0.102
32204 20 47 19.25 0.16
32205 25 52 19.25 0.187
32206 30 62 21.25 0.287
32207 35 72 24.25 0.445
32208 40 80 24.75 0.532
32209 45 85 24.75 0.573
32210 50 90 24.75 0.626
32211 55 100 26.75 0.853
32212 60 110 29.75 1.17
32213 65 120 32.75 1.55
32214 70 125 33.25 1.64
32215 75 130 33.25 1.74
32216 80 140 35.5 2.15
32217 85 150 39 2.75
32218 90 160 43 3.42
32219 95 170 46 4.33
32220 100 180 49.5 5.14
32221 105 190 53.3 5.9
32222 110 200 56.5 7.5
32304 20 52 22.25 0.23
32305 25 62 25.25 0.368
32306 30 72 28.75 0.562
32307 35 80 32.75 0.763
32308 40 90 35.25 1.04
32309 45 100 38.25 1.4
32310 50 110 42.25 1.89
32311 55 120 45.5 2.37
32312 60 130 48.5 2.9
32313 65 140 51 3.51
32314 70 150 54 4.34
32315 75 160 58 5.37
32316 80 170 61.5 6.38
32317 85 180 64 7.33
32318 90 190 68 8.91
32319 95 200 72 10.5
32320 100 215 78 12.8
32321 105 225 82 13.8
32322 110 240 85 18.1
33000 Series Tapered Roller Bearing
Bearing No. Dimensions(mm) Weight
d D B
33005 25 47 17 0.129
33006 30 55 20 0.201
33007 35 62 21 0.25
33008 40 68 22 0.306
33009 45 75 24 0.398
33571 50 80 24 0.433
33011 55 90 27 0.651
33012 60 95 27 0.691
33013 65 100 27 0.732
33014 70 110 31 1.07
33015 75 115 31 1.12
33016 80 125 36 1.63
33017 85 130 36 1.75
33018 90 140 39 2.157
33019 95 145 39 2.3
33571 100 150 39 2.4
33206 30 62 25 0.355
33207 35 72 28 0.524
33208 40 80 32 0.715
33209 45 85 32 0.77
33210 50 90 32 0.867
33211 55 100 35 1.18
33212 60 110 38 1.56
33213 65 120 41 2.04
33214 70 125 41 2.15
33215 75 130 41 2.25
33216 80 140 46 2.94
33217 85 150 49 3.56
33218 90 160 55 4.69
33219 95 170 58 5.54
33220 100 180 63 6.4

 

 

 

Performance

 

1. The service life is relatively high under high loads, general requirements of 3~5 times theory life;
2. In the gearbox, foreign matters can’t enter bearings easily, require bearings have a high compressive strength and wear resistance.
3.The height of the grease technology -improve the performance of the bearing.

 

Our Advantages

1.Professional supplier: we are the biggest bearing supplier in China. Besides of our own factory, we also have a stable supply chain to provide all types of bearing.
2.Quality: we can supply bearing with world-class quality.
3.OEM or Non-Standard Bearing: OEM & Non-Standard bearing are available.
4.Professional teams:we have professional teams with technology, research and production.
5. Quick delivery: we can provide the shortest delivery time.

 

                                                            

Company Profile

 

 

       ZheJiang Dente International Trade Co.,Ltd has taken in this line for more than 20 years. Besides of our own factory, we also cooperate with more than 500 bearing factories to meet market requirements. 
Our products include deep groove ball bearings, tapered roller bearings, pillow block bearings, self-aligning ball bearings, spherical roller bearings, cylindrical roller bearings, thrust ball bearings, non-standard bearings of automobiles. Simultaneously we also supply needle roller bearings, stainless steel bearings ,inch series bearings, non-standard bearings, imported bearings of global brand, wheel hub bearings.
 

Our products include deep groove ball bearing, tapered roller bearing, pillow block bearing, self-aligning ball bearing, spherical roller bearing, cylindrical roller bearing, thrust ball bearing, non-standard bearing of automobiles. Simultaneously we also supply needle roller bearing, stainless steel bearing ,inch series bearing, non-standard bearing, imported bearing of global brand, wheel hub bearing. And we also supply some customized bearing.
The company has strong production capacity to meet large-scale order demands:

Testing equipment
Company testing center is equipped with professional testing equipment,bearings produced by professional and technical personnel to detect bearing greatly enchance the ability to control the technical indicators,to ensure that the pass rate of products manufactured to meet customer demand.
 

DNT bearing products used have undergone multiple rigorous technical screening, testing, and release to ensure that the performance of each product matches the precision of the unit and device. The factory has complete testing equipment, ensuring safety and quality that you can rest assured!

Packaging & Shipping

 

 

Package & shipping
Inner plastic bags+ cartons+ pallets
Tubes+cartons+pallets
Customized packages
 

FAQ

1.who are you?
We are the biggest supplier of bearing in China. ZheJiang Dente International Trade Co.,Ltd

2.Are you a Manufacturer or trading company?
We are a comprehensive enterprise with factory and trading company.

3.Can I get a sample to check out the quality?
Sure, free samples are available for stock products if you pay for the shipping cost.

4.What is your delivery time?
Most orders will be shipped within 7-15 days of payment being received.

Any problems, pls feel free to contact us.100% after-sales service!

 We can supply high-quality bearing products with competitive price and the shortest delivery time if you choose us!

 

 

Shipping Cost:

Estimated freight per unit.



To be negotiated
Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Small and Medium-Sized (60-115mm)
Samples:
US$ 0.8/Piece
1 Piece(Min.Order)

|

Order Sample

Chrome steel
Customization:
Available

|

Customized Request

bearing

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

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.

China Standard Inched/Metric 30000 Tapered Roller Bearing for Yoyo Ball/Roller Skate/Wind Turbine/Hydraulic Turbine/Precise Instrument/Gear Reducer/Shredder/Cutting Machine   bearing airChina Standard Inched/Metric 30000 Tapered Roller Bearing for Yoyo Ball/Roller Skate/Wind Turbine/Hydraulic Turbine/Precise Instrument/Gear Reducer/Shredder/Cutting Machine   bearing air
editor by CX 2023-04-23

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