Product Description

Metric Sizes Tapered Roller Bearings
Product Number Bore Dia Outer Dia Inner Width Outer Width Width
(d) (D) (Bi) (Bo) (B)
35712 15 mm 35 mm 11 mm 10 mm 11.75 mm
30302 15 mm 42 mm 13 mm 11 mm 14.25mm
35713 17 mm 40 mm 12 mm 11 mm 13.25mm
30303 17 mm 47 mm 14 mm 12 mm 15.25 mm
32303 17 mm 47 mm 19 mm 16 mm 20.25 mm
35714 20 mm 47 mm 14 mm 12 mm 15.25 mm
35714B 20 mm 47 mm 14 mm 12 mm 15.25 mm
30304 20 mm 52 mm 15 mm 13 mm 16.25mm
30304C 20 mm 52 mm 16 mm 12 mm 16.25 mm
32204 20 mm 47 mm 18 mm 15 mm 19.25 mm
32304 20 mm 52 mm 21 mm 18 mm 22.25mm
35715 25 mm 52 mm 15 mm 13 mm 16.25 mm
30305 25 mm 62 mm 17 mm 15 mm 18.25 mm
31305 25 mm 62 mm 17 mm 13 mm 18.25 mm
32005 25 mm 47 mm 15 mm 11.50 mm 15 mm
32205 25 mm 52 mm 18 mm 16 mm 19.25 mm
32305 25 mm 62 mm 24 mm 20 mm 25.25 mm
33205 25 mm 52 mm 22 mm 18 mm 22 mm
32026 26 mm 47 mm 15 mm 11.50 mm 47 mm
32571 28 mm 52 mm 16 mm 12 mm 16. mm
33228 28 mm 58 mm 24 mm 19 mm 24 mm
35716 30 mm 62 mm 16 mm 14 mm 17.25 mm
30306 30 mm 72 mm 19 mm 16 mm 20.75 mm
31306 30 mm 72 mm 19 mm 14 mm 20.75 mm
32006 30 mm 55 mm 17 mm 13 mm 17 mm
32206 30 mm 62 mm 20 mm 17 mm 21.25 mm
32306 30 mm 72 mm 27 mm 23 mm 28.75 mm
33206 30 mm 62 mm 25 mm 19.5 mm 25 mm
32032 32 mm 58 mm 17 mm 13 mm 17 mm
32032A 32 mm 58 mm 17 mm 13 mm 17 mm
32332B 32 mm 75 mm 28 mm 23 mm 29.75 mm
33232 32 mm 65 mm 26 mm 20.5 mm 26 mm
35717 35 mm 72 mm 17 mm 15 mm 18.25 mm
30307 35 mm 80 mm 21 mm 18 mm 22.75 mm
31307 35 mm 80 mm 21 mm 15 mm 22.75 mm
32007 35 mm 62 mm 18 mm 14 mm 18 mm
32207 35 mm 72 mm 23 mm 19 mm 24.25 mm
32307 35 mm 80 mm 31 mm 25 mm 32.75 mm
33207 35 mm 72 mm 28 mm 22 mm 28 mm
35718 40 mm 80 mm 18 mm 16 mm 19.75 mm
30308 40 mm 90 mm 23 mm 20 mm 25.25 mm
31308 40 mm 90 mm 23 mm 17 mm 25.25 mm
32008 40 mm 68 mm 19 mm 14.5 mm 19 mm
32208 40 mm 80 mm 23 mm 19 mm 24.75 mm
32308 40 mm 90 mm 33 mm 27 mm 35.25 mm
33108 40 mm 75 mm 26 mm 20.5 mm 26 mm
33208 40 mm 80 mm 32 mm 25 mm 32 mm
35719 45 mm 85 mm 19 mm 16 mm 20.75 mm
30309 45 mm 100 mm 25 mm 22 mm 27.25 mm
31309 45 mm 100 mm 25 mm 18 mm 27.25 mm
32009 45 mm 75 mm 20 mm 15.5 mm 20 mm
32209 45 mm 85 mm 23 mm 19 mm 24.75 mm
32309 45 mm 100 mm 36 mm 30 mm 38.25 mm
33209 45 mm 85 mm 32 mm 24.5 mm 32 mm
27709 45 mm 100 mm 29 mm 20.50 mm 31.75 mm
33109 45 mm 80 mm 26 mm 20.5 mm 26 mm
27709K 45 mm 100 mm 29 mm 20.50 mm 32 mm
35710 50 mm 90 mm 20 mm 17 mm 21.75 mm
3571 50 mm 110 mm 27 mm 23 mm 29.25 mm
31310 50 mm 110 mm 27 mm 19 mm 29.25 mm
32571 50 mm 80 mm 20 mm 15.5 mm 20 mm
32210 50 mm 90 mm 23 mm 19 mm 24.75 mm
32310 50 mm 110 mm 40 mm 33 mm 42.25 mm
33110 50 mm 85 mm 26 mm 20 mm 26 mm
33210 50 mm 90 mm 32 mm 24.5 mm 32 mm
30111 55 mm 100 mm 21 mm 18 mm 22.75 mm
3571 55 mm 120 mm 29 mm 25 mm 31.5 mm
31311 55 mm 120 mm 29 mm 21 mm 31.5 mm
32011 55 mm 90 mm 23 mm 17.5 mm 23 mm
32211 55 mm 100 mm 25 mm 21 mm 26.75 mm
32311 55 mm 120 mm 43 mm 35 mm 45.5 mm
32311A 55 mm 120 mm 43 mm 35 mm 45.5 mm
33111 55 mm 95 mm 30 mm 23 mm 30 mm
33211 55 mm 100 mm 35 mm 27 mm 35 mm
35712 60 mm 110 mm 22 mm 19 mm 23.75 mm
3571 60 mm 130 mm 31 mm 26 mm 33.5 mm
31312 60 mm 130 mm 31 mm 22 mm 33.5 mm
32012 60 mm 95 mm 23 mm 17.5 mm 23 mm
32212 60 mm 110 mm 28 mm 24 mm 29.75 mm
32312 60 mm 130 mm 46 mm 37 mm 48.5 mm
32312B 60 mm 130 mm 46 mm 37 mm 48.5 mm
33112 60 mm 100 mm 30 mm 23 mm 30 mm
33212 60 mm 110 mm 38 mm 29 mm 38 mm
35713 65 mm 120 mm 23 mm 20 mm 24.75 mm
3571 65 mm 140 mm 33 mm 28 mm 36 mm
30613E 65 mm 110 mm 30 mm 24 mm 30.5 mm
31313 65 mm 140 mm 33 mm 23 mm 36 mm
32013 65 mm 100 mm 23 mm 17.5 mm 23 mm
32213 65 mm 120 mm 31 mm 27 mm 32.75 mm
32313 65 mm 140 mm 48 mm 39 mm 51 mm
32313B 65 mm 140 mm 48 mm 39 mm 51 mm
33113 65 mm 110 mm 34 mm 26.50 mm 34 mm
33213 65 mm 120 mm 41 mm 32 mm 41 mm
35714 70 mm 125 mm 24 mm 21 mm 26.25 mm
3571 70 mm 150 mm 35 mm 30 mm 38 mm
31314 70 mm 150 mm 35 mm 25 mm 38 mm
32014 70 mm 110 mm 25 mm 19 mm 25 mm
32214 70 mm 125 mm 31 mm 27 mm 33.25 mm
32314 70 mm 150 mm 51 mm 42 mm 54 mm
32314B 70 mm 150 mm 51 mm 42 mm 54 mm
33114 70 mm 120 mn 37 mm 29 mm 37 mm
33214 70 mm 125 mm 41 mm 32 mm 41 mm
35715 75 mm 130 mn 25 mm 22 mm 27.25 mm
3571 75 mm 160 mm 37 mm 31 mm 40 mm
30615 75 mm 135 mm 45 mm 36.5 mm 44.5 mm
31315 75 mm 160 mm 37 mm 26 mm 40 mm
32015 75 mm 115 mm 25 mm 19 mm 25 mm
32215 75 mm 130 mm 31 mm 27 mm 33.25 mm
32315 75 mm 160 mm 55 mm 45 mm 58 mm
32315B 75 mm 160 mm 55 mm 45 mm 58 mm
33115 75 mm 125 mm 37 mm 29 mm 37 mm
33215 75 mm 130 mm 41 mm 31 mm 41 mm
35716 80 mm 140 mm 26 mm 22 mm 28.25 mm
3 0571 80 mm 170 mm 39 mm 33 mm 42.5 mm
30616 80 mm 140 mm 45 mm 36.5 mm 45 mm
31316 80 mm 170 mm 39 mm 27 mm 42.5 mm
32016 80 mm 125 mm 29 mm 22 mm 29 mm
32216 80 mm 140 mm 33 mm 28 mm 35.25 mm
32316 80 mm 170 mm 58 mm 48 mm 61.5 mm
33116 80 mm 130 mm 37 mm 29 mm 37 mm
33216 80 mm 140 mm 46 mm 35 mm 46 mm
35717 85 mm 150 mm 28 mm 24 mm 30.5 mm
3 0571 85 mm 180 mm 41 mm 34 mm 44.5 mm
31317 85 mm 180 mm 41 mm 28 mm 44.5 mm
32017 85 mm 130 mm 29 mm 22 mm 29 mm
32217 85 mm 150 mm 36 mm 30 mm 38.5 mm
32317 85 mm 180 mm 60 mm 49 mm 63.5 mm
33117 85 mm 140 mm 41 mm 32 mm 41 mm
33217 85 mm 150 mm 49 mm 37 mm 49 mm
35718 90 mm 160 mm 30 mm 26 mm 32.5 mm
3 0571 90 mm 190 mm 43 mm 36 mm 46.5 mm
31318 90 mm 190 mm 43 mm 30 mm 46.5 mm
32018 90 mm 140 mm 32 mm 24 mm 32 mm
32218 90 mm 160 mm 40 mm 34 mm 42.5 mm
32318 90 mm 190 mm 64 mm 53 mm 67.5 mm
33118 90 mm 150 mm 45 mm 35 mm 45 mm
35719 95 mm 170 mm 32 mm 27 mm 34.5 mm
3571 95 mm 200 mm 45 mm 38 mm 49.5 mm
31319 95 mm 200 mm 45 mm 32 mm 49.50 mm
32019 95 mm 145 mm 32 mm 24 mm 32 mm
32219 95 mm 170 mm 43 mm 37 mm 45.5 mm
32319 95 mm 200 mm 67 mm 55 mm 71.5 mm
33019 95 mm 145 mm 39 mm 32.5 mm 39 mm
35710 100 mm 180 mm 34 mm 29 mm 37 mm
30320 100 mm 215 mm 47 mm 39 mm 51.5 mm
31320 100 mm 215 mm 51 mm 35 mm 56.5 mm
32571 100 mm 150 mm 32 mm 24 mm 32 mm
32220 100 mm 180 mm 46 mm 39 mm 49 mm
32320 100 mm 215 mm 73 mm 60 mm 77.5 mm
33220 100 mm 180 mm 63 mm 48 mm 63 mm
35711 105 mm 190 mm 36 mm 30 mm 39 mm
30321 105 mm 225 mm 49 mm 41.00 mm 53.50 mm
31321 105 mm 225 mm 53 mm 36 mm 58 mm
32571 105 mm 160 mm 35 mm 26 mm 35 mm
32221 105 mm 190 mm 50 mm 43 mm 53 mm
32321 105 mm 225 mm 77 mm 63 mm 81.5 mm
35712 110 mm 200 mm 38 mm 32 mm 41 mm
30322 110 mm 240 mm 50 mm 42 mm 54.5 mm
31322 110 mm 240 mm 57 mm 38 mm 63 mm
32571 110 mm 170 mm 38 mm 29 mm 38 mm
32222 110 mm 200 mm 53 mm 46 mm 56 mm
32322 110 mm 240 mm 80 mm 65 mm 84.5 mm
33571 110 mm 170 mm 47 mm 37 mm 47 mm
33122 110 mm 180 mm 56 mm 43 mm 56 mm
35714 120 mm 215 mm 40 mm 34 mm 43.5 mm
30324 120 mm 260 mm 55 mm 46 mm 59.5 mm
31324 120 mm 260 mm 62 mm 42 mm 68 mm
32571 120 mm 180 mm 38 mm 29 mm 38 mm
32224 120 mm 215 mm 58 mm 50 mm 61.50 mm
32324 120 mm 260 mm 86 mm 69 mm 90.5 mm
35716 130 mm 230 mm 40 mm 34 mm 43.75 mm
30326 130 mm 280 mm 58 mm 49 mm 63.75 mm
31326 130 mm 280 mm 66 mm 44 mm 72 mm
32026 130 mm 200 mm 45 mm 34 mm 45 mm
32226 130 mm 230 mm 64 mm 54 mm 67.75 mm
35718 140 mm 250 mm 42 mm 36 mm 45.75 mm
30328 140 mm 300 mm 62 mm 53 mm 67.75 mm
31328 140 mm 300 mm 70 mm 47 mm 77 mm
32571 140 mm 210 mm 45 mm 34 mm 45 mm
32228 140 mm 250 mm 68 mm 58 mm 71.75 mm
35710 150 mm 270 mm 45 mm 38 mm 49 mm
30330 150 mm 320 mm 65 mm 55 mm 72 mm
31330 150 mm 320 mm 75 mm 50 mm 82 mm
32030 150 mm 225 mm 48 mm 36 mm 48 mm
32230 150 mm 270 mm 73 mm 60 mm 77 mm
35712 160 mm 290 mm 48 mm 40 mm 52 mm
30332 160 mm 340 mm 68 mm 58 mm 75 mm
32032 160 mm 240 mm 51 mm 38 mm 51 mm
32232 160 mm 290 mm 80 mm 67 mm 84 mm
35714 170 mm 310 mm 52 mm 43 mm 57 mm
30334 170 mm 360 mm 72 mm 62 mm 80 mm
32034 170 mm 260 mm 57 mm 43 mm 57 mm
32234 170 mm 310 mm 86 mm 71 mm 91 mm
32334 170 mm 360 mm 120 mm 100 mm 128 mm
35716 180 mm 320 mm 52 mm 43 mm 57 mm
32036 180 mm 280 mm 64 mm 48 mm 64 mm
32236 180 mm 320 mm 86 mm 71 mm 91 mm
35718 190 mm 340 mm 55 mm 46 mm 60 mm
32038 190 mm 290 mm 64 mm 48 mm 64 mm
32238 190 mm 340 mm 92 mm 75 mm 97 mm
35710 200 mm 360 mm 58 mm 48 mm 64 mm
32040 200 mm 310 mm 70 mm 53 mm 70 mm
32240 200 mm 360 mm 98 mm 82 mm 104 mm
32044 220 mm 340 mm 76 mm 57 mm 76 mm
32244 220 mm 400 mm 108 mm 90 mm 115 mm
32048 240 mm 360 mm 76 mm 57 mm 76 mm
32948 240 mm 320 mm 51 mm 39 mm 51 mm

Packing & Delivery

1.industrial packing+industrial cartons+pallets

2.single brand box+brand cartons+pallets

3.follow customer’s requests

A.Plastic Tubes or Single Boxes ( Usually 10pcs in 1 plastic tube for steel bearings);

B.Cartons ( No more than 30kg for 1 carton );

C. Pallet ( Usually more than 400kg totally will use pallet )

 

D. Delivery time :7-35 days ( by sea or by air )
 

 Generally,We will choose the most suitable packing method for products. If you have any special requirements for packing, please contact us in advance.

Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Large (200-430mm)
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Axial Bearing
Samples:
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1 Piece(Min.Order)

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Customization:
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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 wholesaler 32321 Tapered Roller Bearing High Quality Machinery Parts for Machine Tool Spindle Instrument Motor Hydraulic Machinery   bearing and raceChina wholesaler 32321 Tapered Roller Bearing High Quality Machinery Parts for Machine Tool Spindle Instrument Motor Hydraulic Machinery   bearing and race
editor by CX 2023-11-11