Angular Contact Ball Bearing for Steam Turbine-generators

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QJ238M Angular Contact Ball Bearing for steam turbine-generators
1.High precition and long life
2.high quality

QJ238M Angular Contact Ball Bearing for steam turbine-generators

 Angular contact ball bearings are particularly suitable for carrying combined (axial and radial) loads. Sometimes, they also can carry pure axial load and operate in higher speed. Under radial load, axial component force will be produced which must be counteracted. So the bearings are normally adjust against a second bearing.   


Four Points Angular Contact Ball Bearing product specifications

Bearing NO.Size(mm)weight(kg)




Q:What's my consideration when I choose a bearing?

 A:- The type and size of bearing you need.

     - The quality or application you prefer.


Q: What's bearing's advantage.

A: - Substantial inventory, unified quality control,save much cost and time for customers.


Q: What's your guarantee on quality problem?

A: - Free to change in 2 month and in your next order,10% value of order can be paid after receiving goods and checking out no quality issues.


Q: Can I be a distributor of TIANHE?

A: Of course you can.


Q:What are the benefits of being a TIANHE distributor?

A:-Special Discount

   -Marketing Protection

   -Priority Delivery than other orders.

   -Point to point technical supports and after sales services.


Q:How can I become a distributor of TIANHE?

A: Contact us immediately for further details by sending us an inquiry.

Packaging & Delivery

Packaging Details:in cartons or as per customer's requirements
Delivery Detail:25-30 days after getting the deposit







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Q:What are the technical requirements and precautions for the assembly of plain bearings?
When the shaft rotates at a high speed, the shaft to the bearing with periodically varying load, sometimes accompanied by shock.
Q:Can self lubrication plain bearings bear both axial and radial loads?
Bearing type is different, the load is not the same. Self lubrication bearings, in fact, are the same as plain sliding bearings, but are designed to lubricate themselves, so they can bear axial and radial loads. General bearings can withstand two-way load, but just to accept the size is not the same. Hope to help you.
Q:What are the main applications of plain bearings?
Sliding bearings (sliding, bearing) bearings that work under sliding friction. Plain bearings work smoothly, reliably and without noise. Under the condition of liquid lubrication, the sliding surface is separated by the lubricant without direct contact, and the friction loss and surface wear can be greatly reduced. The oil film also has a certain vibration absorption capacity. But the starting friction resistance is larger. The shaft supported by the bearing is called the journal, and the part that matches the journal is called the bush.
Q:Selection of rolling bearings and sliding bearings 5
The specific choice is usually to see the design needs. Plain bearings generally consider heavy loads or poor lubrication conditions.
Q:What are the differences between rolling bearings and plain bearings? What are their respective applications?
The second is the movement in different ways, the way of rolling motion the bearing is rolling motion; x0d sliding bearing is sliding, so the situation on the friction is not the same. The general mechanical equipment used in relatively small rolling bearing, high speed, such as motor x0d, Gear box, sliding bearing applications generally in low speed and heavy load conditions, or maintenance and operation of the site maintenance and lubricating oil is difficult, such as ship propulsion shaft x0d.x0d hope my answer to help you.
Q:What are the parameters that are generally considered in the dynamic characteristics of plain bearings?
Hello, Chen Han Plain bearings mainly have the following parameters:Load;Linear velocity;Service temperature;Tensile and yield strength;Hardness;Coefficient of friction;PV value;
Q:What are the aspects of the performance of plain bearing materials?
The material selection of the sliding bearing depends on the form of failure. The main failure modes are wear and fatigue damage of bearings and shafts. The prevention of wear and fatigue damage of bearings and bushings is the key to the selection of bearings and bushings. The main considerations are as follows:Wear resistance and friction reduction;Running in (running fit);Hiding property;Compliance;Strength and plasticity;The heat transfer and good corrosion resistance;The process of economy, etc..
Q:What are the two types of friction lubrication in plain bearings?
(3) non liquid friction sliding bearing calculation and checking, limit pressure P, to ensure that the lubricating oil film is not destroyed; limit value of PV, in order to ensure the bearing temperature is not too high, because the temperature is too high, easy to cause the rupture boundary of oil film.(4) according to the principle of hydrodynamic lubrication, the hydrodynamic lubrication sliding bearing is designed, which is mainly used in the continuous high speed operation.
Q:10kV High Voltage Motor how to distinguish between rolling and sliding bearings, preferably pictures
Rolling has steel ball sliding, there is oil tank bearing
Q:What are the lubrication methods of plain bearings?
Many types of sliding bearing, manufacturing materials, credit conditions and the important degree of difference, so the lubricant requirements vary, the Chongqing auto parts of sliding bearings commonly used lubricants are briefly reviewed. (1) lubricating oil. Lubricating oil is the most widely used lubricant in sliding bearings, and most of the lubricants currently used are mineral oils. The main indexes of lubricating oil are viscosity, oiliness, extreme pressure, chemical stability, etc. when selecting lubricating oil, speed, load and working condition should be taken into account. For large load, high temperature bearings, it is better to choose lubricating oil with high viscosity, small load and high speed bearing, it is better to choose less viscous lubricating oil. (2) grease. Grease is a mixture of lubricating oils and various thickening agents (such as calcium, sodium, aluminum and other metal soaps). Grease is used to form a film that separates the sliding surface. Grease seal is simple, do not need to add often, not easy to drain. But grease is easy to change, friction loss, no cooling effect, it is often used for those who are not demanding, difficult to often oil, or low speed, heavy load and not often used.

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