Bearing housing and its types. Do-it-yourself bearing housing

2024 Author: Howard Calhoun | [email protected]. Last modified: 2023-12-17 10:16

In the mechanisms that are used in everyday life by a person, you can often find such a detail as a bearing. They are in the systems of both household appliances and industrial ones. The bearing housing is part of the part assembly. It comes in different shapes, varieties and sizes. To better understand its structure, it is necessary to study the bearing housing. Self-repair of many types of equipment will become clearer and more efficient. If desired, bearing housings can be created by hand.

General characteristics

The bearing housing is a special item. It is usually made of cast iron or other alloys. A bearing housing is used to fit the main shaft onto the main platform. It holds the piece tightly.

The body and the actual bearing - rolling, sliding and other varieties - together create a knot. It is easy to find in the equipment and technology of enterprises of all industrial sectors.

Since there are quite a lot of types of the presented part, there are still cases for themmore. Moreover, manufacturers are ready to produce both products of a standard configuration and housings for bearings of a special shape. In the latter case, an individual drawing is created, on the basis of which the master makes the required part. This allows you to ensure that the assembly meets the existing production conditions.

Modern bearing housings

Today, the production process allows you to make a mechanism with some additional part or as a separate product. The housings also differ in the mounting system of the bearing inside the housing, for example, it can be fixed on the legs. It depends on the type of part.

Cases of rolling, sliding and other types of bearings are made from high quality materials. It can be cast iron, pressed or stamped steel, synthetic rubber.

The modern market of bearing units is dominated by imported mechanism elements. Their popularity is explained by the increasing number of different foreign equipment. It requires during the operation of bearings of units of a certain type, which our production does not produce.

Case Types

There is a certain classification of housings for bearings. Each type is distinguished by its purpose, method of attachment, configuration and size. The following varieties are standard today:

• stationary solid;
• stationary detachable;
• flanged.

Wholethe fixed body type is made of pure nickel, which makes it more rigid and simpler. The axial fit of bearings in the housing has a complex axial type of mounting. Therefore, this variety is used in low-speed mechanisms that have a small shaft diameter.

The split fixed body is made of gray cast iron. It consists of a lid and a base. These housing elements are bolted together. This design makes it easy to change the bearing when it is worn, to make a secondary boring of the liner, and also to adjust the clearance. This is a common housing type in mechanical engineering.

Flanged body similar to previous type. It consists of a base and a cover connected by bolts. It is used for very demanding parts. It supports both the end shaft and the through shaft.

Features of operation

The bearing housing must provide the entire assembly with the required operating parameters. It functions under heavy loads and should not create an increased noise level. Extreme operating conditions of the unit should not reduce the durability of the case and the entire mechanism.

Depending on the purpose, there are a large number of types of structures. Each manufacturer labels them differently. You can select the most popular manufacturing companies.

The body has a spherical shape for the installation of the bearing itself. This allows the elements of the mechanism to be installed independently. Oil-repellent seals made of rubber in the form of rings are installed between the bearing and the housing.

Features of fastening tobody

There are several varieties of bearing fit on the shaft in the assembly housing. The technologies described below are the most common today.

One of the most common is the bearing in the housing on the legs. It has the ability to lubricate and is involved in the creation of high-speed mechanisms. These can be fans, emergency energy saving systems, flywheels. Their distinctive feature is the ability to work at elevated temperatures.

The inner ring can also be secured to the shaft with set screws. There are cases, the inner ring of which has a conical hole. The part is fixed in it with an adapter sleeve.

There are also cases in which the installed product is fixed with a special eccentric ring.

Benefits of non-lubricated and lubricated housings

Today, manufacturers produce both lubricated and non-lubricated bearing housings. The bearing housing, which is designed for standard relubricated units, has an oiler inside.

The advantages of non-replenishable relubrication housings include savings on maintenance, compact design. There is no possibility of oil leakage in such parts. This results in a cleaner part.

Re-lubricated housings operate at high temperatures and in a very dusty environment. If there is no possibilityuse a part with a cover, such an assembly is used in conditions where it is splashed with water or other liquids.

If such a housing is not used regularly, the bearing will work properly. Such parts are used at an accelerated course of the assembly, at increased loads and the need to reduce noise during operation.

Manufacturers and labels

Depending on the type of manufacturer, there is a certain part marking. Unless it is a DIY bearing housing, it will definitely have the designation of the respective company that created it.

There are a large number of brands, but the following manufacturers are considered popular today:

• China and Singapore launch FBJ parts.
• Italian bearing mechanism elements can be marked as KDF or TSC.
• Japan labels its cases as ASAHI or NSK.
• SKF products are so expensive that they are almost never found in the equipment of our country.

The price of such products depends on the manufacturer and, as a rule, the higher the quality of the part itself. Polish and Russian cases are considered the cheapest, but short-lived, the parts presented by the Japanese are made of higher quality. Further, Italian-made units have higher reliability and cost, followed by Serbian mechanisms. The most reliable, but very expensive, are German and Swedish, as well as some Japanese (NTN, KOYO) bearing housings.

Case marking depending ondesigns

The bearing housing can be marked with different markings depending on the type of assembly. Manufactured for radial parts that are installed in flanged assemblies, the mechanism is secured with set screws. The bearing in them is designated UC, and the housing for them is F, P, T, FL, FC. If this node is connected together, the part will look like, for example, UCP, UCT, UCFL.

For supporting structures, the housing is designated as SD, and the bearing itself as SN.

It is better to purchase such products from a direct representative of a particular manufacturer. This guarantees the quality of the purchased parts.

Homemade bearing housing

Making a bearing housing with your own hands is not so difficult.

The only thing, it will differ for obvious reasons from the factory sample. Therefore, if the greater strength and accuracy of the part is not important, this is quite a feasible task.

A good material for the manufacture of the case is graphite caprolon. It is characterized by increased wear resistance, strength and slip. You need to cut a hole by holding the material in a vise. A drill, a knife and a file should make an even hole in caprolon.

Insert the sliding pad inside. It is better to make the body split and clamp it with a screw on the shaft. The smoother the hole, the better the part will work.

It happens that the body is even made of wood. The ring is made fromsectors, which are then pulled together. This automatically compensates for bearing play.

Having considered the varieties and design of such a part as a bearing housing, you can understand the principle of its operation and perform independent repairs of a fairly large number of equipment at home.