China supplier China 30202 30203 30204 30205 30206 30207 30208 30209 Tapered Roller Bearing bearing bronze

Product Description

China 35712 35713 35714 35715 35716 35717 35718 35719 Tapered Roller Bearings

Product Description

Tapered roller bearings refer to radial thrust rolling bearings whose rolling elements are tapered rollers. There are 2 kinds of small cone angle and large cone angles. The small cone angle mainly bears the combined radial and axial loads dominated by radial loads. It is often used in pairs and installed in reverse. The inner and outer races can be installed separately, and the radial and axial clearances can be adjusted during installation and use; The large cone angle mainly bears the combined axial and radial loads, which are mainly axial loads. Generally, it is not used to bear pure axial loads alone but can be used to bear pure radial loads when arranged in pairs (the ends with the same name are installed opposite to each other).

Tapered roller bearings are separable bearings, and both the inner and outer rings of the bearing have tapered raceways. This type of bearing is divided into different structural types such as single-row, double-row, and four-row tapered roller bearings according to the number of rows of rollers installed. Single-row tapered roller bearings can bear radial loads and axial loads in 1 direction. When the bearing is subjected to radial load, an axial component force will be generated, so another bearing that can withstand the axial force in the opposite direction is needed to balance it.

Size range
The basic dimensions of CZPT tapered roller bearings are listed in the dimension data table,

Single-row tapered roller bearings:
Inner diameter size range: 20mm~1270mm
Outer diameter range: 40mm~1465mm
Width size range: 15mm~240mm

Double-row tapered roller bearings:
Inner diameter size range: 38mm~1560mm
Outer diameter range: 70mm~1800mm
Width size range: 50mm~460mm

Four-row tapered roller bearings:
Inner diameter size range: 130mm~1600mm
Outer diameter size range: 200mm~2000mm
Width size range: 150mm~1150mm

Product Parameters

Product Name 

Tapered Roller Bearing


Tapered Roller Bearing


Tapered roller, retainer, inner and outer ring tapered

Applicable Industries

Building materials workshop, construction engineering, machinery maintenance workshop, retail, manufacturing plant, motor,
automobile hub, agricultural machinery

Brand Name




Accuracy Class


Seal Number of Rows

Single row / Double row / Four-row


ZheJiang , China






Long-life High Speed

    Bearing  No.                               Dimension(mm)                                     Basic Load  Weight(kg)
      Model No. d D T B C r(min) r1(min)
32571X 50 80 20 20 15.5 1 1 0.389
33110 50 85 26 26 20 1.5 1.5 0.594
35710 50 90 21.75 20 17 1.5 1.5 0.566
32210 50 90 24.75 23 19 1.5 1.5 0.643
33210 50 90 32 32 24.5 1.5 1.5 0.887
3571 50 110 29.25 27 23 2.5 2 1.32
32310 50 110 42.25 40 33 2.5 2 1.89
32011X 55 90 23 23 17.5 1.5 1.5 0.569
33011 55 90 27 27 21 1.5 1.5 0.672
33111 55 95 30 30 23 1.5 1.5 0.868
35711 55 100 22.75 21 18 2 1.5 0.732
32211 55 100 26.75 25 21 2 1.5 1.18
33211 55 100 35 35 27 2 1.5 1.18
3571 55 120 31.5 29 25 2.5 2 1.65
32311 55 120 45.5 43 35 2.5 2 2.38
32012X 60 95 23 23 17.5 1.5 1.5 0.621
35712 60 110 23.75 22 19 2 1.5 0.945
32212 60 110 29.75 28 24 2 1.5 1.19
3571 60 130 33.5 31 26 3 2.5 2.08
32312 60 130 48.5 46 37 3 2.5 2.99
32013X 65 100 23 23 17.5 1.5 1.5 0.664
33113 65 110 34 34 26.5 1.5 1.5 1.33
35713 65 120 24.75 23 20 2 1.5 1.18
32213 65 120 32.75 31 27 2 1.5 1.58
33213 65 120 41 41 32 2 1.5 2.02
3571 65 140 36 33 28 3 2.5 2.56
32313 65 140 51 48 39 3 2.5 3.64
32014X 70 110 25 25 19 1.5 1.5 0.884
33014 70 110 31 31 25.5 1.5 1.5 1.09
35714 70 125 26.25 24 21 2 1.5 1.32
32214 70 125 33.25 31 27 2 1.5 1.17
3571 70 150 38 35 30 3 2.5 3.08
32314 70 150 54 51 42 3 2.5 4.5
32015X 75 115 25 25 19 1.5 1.5 0.93
33015 75 115 31 31 25.5 1.5 1.5 1.16
33115 75 125 37 37 29 2 1.5 1.84
35715 75 130 27.25 25 22 2 1.5 4.42
32215 75 130 33.25 31 27 2 1.5 1.77
33215 75 130 41 41 31 2 1.5 2.26
3571 75 160 40 37 31 3 2.5 3.65
32315 75 160 58 55 45 3 2.5 5.41
32016X 80 125 29 29 22 1.5 1.2 1.32
33116 80 130 37 37 29 2 2.2 1.93
35716 80 140 28.25 26 22 2.5 2 1.72
32216 80 140 35.25 33 28 2.5 2 2.17
33216 80 140 46 46 35 2.5 2 2.99
3 0571 80 170 42.5 39 33 3 2.5 4.46
32316 80 170 61.5 58 48 3 2.5 6.31
32017X 85 130 29 29 22 1.5 1.5 1.38
33017 85 130 36 36 29.5 1.5 1.5 1.72
33117 85 140 41 41 32 2.5 2 2.43


Detailed Photos



Q1:What is your Before-sales Service?
1>. Offer to bear related consultation about technology and application;

2>.Help customers with bearing choice, clearance configuration, product” life, and reliability analysis;

3>. Offer highly cost-effective and complete solution program according to site conditions;

4>. Offer localized program on introduced equipment to save running cost

Q2: What is your After-sales Service?
1>. Offer training about bearing installation and maintenance;

2>.Help customers with trouble diagnosis and failure analysis;

3>. Visit customers regularly and feedback on their rational suggestions and requirements to the company.

Q3: How about your company’s strength?
contact us by email or trade manager, we will send the free samples according to your request. 

2>. World-Class Bearing:
We provide our customers with all types of indigenous roller bearings of world-class quality.

3>.OEM or Non-Stand Bearings: 
Any requirement for Non-standard roller bearings is Easily Fulfilled by us due to our vast knowledge and links in the industry. 

4>.Genuine products With Excellent Quality: 
The company has always proved the 100% quality products it provides with genuine intent.

5>. After-Sales Service and Technical Assistance: 
The company provides after-sales service and technical assistance as per the customer’s requirements and needs.

6>.Quick Delivery: 
The company provides just-in-time delivery with its streamlined supply chain.

7>.Cost Saving: 
We provide long-life, shock-resistant, and high-reliability roller bearings with excellent quality and better performance.
Resulting in increased cost savings.

Q4: What will we do if you are not satisfied with the product?
A: If have any abnormal, Please contact us at the first time, and we will immediately process

Q5: How long will you respond to our problems?
A: We will respond within 1 hour. 24 hours to solve your problem

Q6: Is optional lubrication provided?
A: We can offer a wide range of oils and greases for a variety of applications. Please contact our engineer for technical
assistance with any special requirements

Rolling Body: Ball Bearings
The Number of Rows: Double
Outer Dimension: Large (200-430mm)
Material: Alloy
Spherical: Aligning Bearings
Load Direction: Radial Bearing
US$ 10/Piece
1 Piece(Min.Order)

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Customized Request


Advantages of Ball Bearings

What is a ball bearing? A ball bearing is a type of rolling-element bearing that utilizes balls to maintain separation between two bearing races. Its contact angle between the balls and the races helps it reduce friction between the loads. There are several advantages to ball bearings, including their ability to withstand water. Read on to learn more. Here are a few of the benefits. You can use them in your daily life, from your car to your boat.

Ball bearings reduce friction between loads

Ball bearings reduce friction between loads by constraining the relative motion between moving parts. These bearings consist of a ring of small metal balls that reduce friction between moving objects. The name “ball bearing” is derived from the verb “to bear.” The lubricant within the bearing reduces friction between moving particles. In a machine, ball bearings reduce friction between moving parts and improve linear motion around a fixed axis.
These bearings are commonly used to reduce friction between loads in rotating machines. They have two tracks, one fixed to the rotating part and one stationary. The rolling balls of a ball bearing have lower friction than flat surfaces. Because of this, they are useful for bar stool bearings. They reduce friction between surfaces and maintain the separation between bearing races. Hence, minimal surface contact is possible. Ball bearings have the potential to increase the life of machines and reduce energy consumption.
Ball bearings can be as small as a wrist watch or as large as an industrial motor. They function the same way, reducing friction between loads. Among their many uses, ball bearings are essential for everyday operations. Clocks, air conditioners, fans, and automobile axles all use ball bearings. In fact, anything that uses a motor requires ball bearings. It’s no wonder they’re gaining popularity in industries and everyday life.

They support radial and axial loads

Radial ball bearings are used primarily for radial loads, but they also have a capacity for axial load. This load capacity is usually given as a percentage of the radial load rating. Axial load capacity is generally greater for a bearing with a larger difference between the inner and outer ring diameters. The axial load capacity is also affected by the bearing’s raceway depth, with shallow raceways being more suitable for heavier axial loads.
The two main types of axial and radial loads are defined by their orientation. Axial loads apply forces in one direction while radial loads act on the opposite direction. In both cases, the bearing must support the forces that are imposed. Axial loads apply forces to a bearing in a single direction, while radial loads apply forces in both directions. Regardless of the type of load, axial and radial loads should be considered when selecting a bearing for a given application.
Angular and radial ball bearings differ in their materials. Radial ball bearings are made largely of through-hardened materials. They typically have a Rockwell hardness rating of 58 Rc. The raceways and balls of these bearings are made of 440C stainless steel. They may also contain shields and seals. SAE 52100 steel is the most common material for the raceway, while molybdenum steels are excellent for high temperatures.

They have a contact angle between the balls and the races

When comparing axial load bearings with their radial counterparts, the angular contact angle is more important. Axial load bearings, have a contact angle between the balls and the races of 35 degrees. They are suitable for axial loads and a limited radial load. The contact angle of these bearings is a result of the shape of the inner and outer rings. Each rolling element comes into contact with the inner and outer rings only at one point, forming a 30 degree angle with the radial plane. The radial force of the axial load on these bearings is therefore increased by increasing the contact angle between the balls and the races.
This contact angle determines the amount of friction between the balls and the races, and allows angular contact bearings to withstand heavy radial and thrust loads. In addition, the larger the contact angle, the greater the axial load support. Angular contact bearings come in standard imperial (inch) and metric (mm) sizes. The angular contact angle is determined by the free radial play value and the curvature of the inner track.

They are water-resistant

In addition to their water-resistant qualities, corrosion-resistant ball bearings can also protect against the damaging effects of corrosive environments. Generally, standard metals, such as steel, are susceptible to rust, which can significantly reduce their performance and extend the life of parts. However, plastics, stainless steel, and ceramics can provide corrosion-resistant ball bearings. And because these materials are much more durable, they offer other advantages, such as being easy to maintain.
Among the advantages of plastic ball bearings is their high resistance to extreme temperatures, high speeds, and corrosion. Depending on their construction, plastic bearings are often able to resist corrosion and anti-static properties. They’re lightweight and inexpensive compared to steel ball bearings. CZPT Sales Corporation was established in 1987 with a modest turnover of four lacs. As of the last financial year, it has grown to 500 lacs in sales.
Other advantages of water-resistant ball bearings include corrosion resistance, which is a key consideration in many applications. While stainless steel is highly corrosion-resistant, it decreases the bearing’s load-carrying capacity. Also, corrosion-resistant deep groove ball bearings are usually made with a specified internal clearance, which absorbs loss in clearance during mounting and shaft expansion. This factor affects their performance, and if these are compromised, a replacement may be necessary.

They are tough

A few things make ball bearings tough: they’re made of real materials, which means that they have inherent imperfections. Grade-1 balls are made especially for high-stress applications, such as Formula One engines. Grade-3 balls, on the other hand, strike the perfect balance between performance and cost. Ceramic balls, for example, are made to spin at a high rate of 400 RPM, and they’re finished with a mirror finish.
A steel carbon ball bearing is one of the toughest forms of ball bearings available. The material is incredibly strong, but the contact between the balls isn’t the best. Low-carbon steel is best for linear shafting and is usually coated with a polymer to prevent damage. Steel ball bearings with moderate amounts of carbon are tough, durable, and water-resistant. They’re ideal for gears, but their high-carbon steel counterparts are particularly tough and can resist corrosion.
A ceramic ball bearing is another option. This type has steel inner and outer rings but ceramic balls. Ceramic balls can withstand higher temperatures than steel and are also electrically insulating. Ceramic ball bearings also tend to be lighter and are more resistant to wear and tear. They’re also ideal for applications in which grease is not an option, such as in space shuttles. Despite the fact that ceramic ball bearings are tough, they’re still cheaper than steel ball bearings.

They are conductive

You may have heard the term “ball bearing” if you’ve studied introductory physics. What does that mean? Essentially, ball bearings are conductive because of their ability to conduct electricity. This ability is reflected in the charge distribution on the surface of the ball. Positive charges are drawn toward the positive plate, while negative charges are drawn away from the positively charged ball bearing. You may have even seen a ball bearing in action.
However, despite their conductive nature, ball bearings can still become damaged by electrical discharge. A higher voltage can cause the balls to pit, and the raceways to become uneven. These uneven surfaces will first show up as excessive noise, and eventually cause the bearing to malfunction. Fortunately, engineers have found a way to counter this problem: conductive grease. This grease enables current to flow through the ball bearing, preventing both heat and voltage buildup.
The difference between steel and ceramic ball bearings is their density. Steel bearings are more conductive than glass or hybrid ceramics. Steel ball bearings have an even grain structure and are conductive for resonance flow. When moving fast, the air surrounding the steel ball bearing carries resonance from the inner ring to the outer. This makes them ideal for high-speed resonance transfer. In addition to being conductive, glass microbeads are harder and lighter than steel.

They are used in pulley systems

Pulley systems use ball bearings to move the sprocket, which is a wheel that rotates. These bearings are installed on the center mounting hole of the pulley wheel. They protect the entire system from heat, while allowing higher speed and smooth operation. They distribute the weight of the load evenly, minimizing friction and wobbling, and ensure a smooth rotation. Ball bearings are typically made from steel and are installed inside the pulley wheel.
The moment of inertia and bearing friction are measured to within ten percent accuracy. These two variables affect the speed of the pulley system, which can lead to crashes if the weight holders are not balanced. Therefore, ball bearings are used to minimize the chance of such crashes. When you want to know more about ball bearings in pulley systems, here are the advantages they provide.
Another benefit of ball bearings in pulley systems is that they have lower friction than their solid counterparts. In order to reduce friction, however, ball bearings must be made of good materials. Some of the common ball materials are high-quality plastics and stainless steel. Good materials and clever block design are essential to minimizing friction. If you are planning to use ball bearings in your pulley system, check out the following tips and make sure you are choosing the right one for your application.
China supplier China 30202 30203 30204 30205 30206 30207 30208 30209 Tapered Roller Bearing   bearing bronzeChina supplier China 30202 30203 30204 30205 30206 30207 30208 30209 Tapered Roller Bearing   bearing bronze
editor by CX 2023-05-05