Split-type bearing refers to the parts designed and produced by special technology on the basis of the whole bearing.
Split type refers to the separable object, generally refers to the split type bearing seat. The upper cover and the base of the split type bearing seat can be separated, mainly bear radial load, suitable for spherical roller bearings and self-aligning ball bearings with cylindrical and tapered holes.
The characteristics of split bearing housings are as follows:
With good thermal conductivity,
1: Convenient installation and disassembly, sealing effect is greatly improved.
2: split type bearing seat application: the bearing seat is mainly used in metallurgy, mining, transportation system, environmental protection equipment, etc.
The split-type bearing has low working resistance, stable operation and working temperature up to 180 degrees Celsius. They are very suitable for low speed, heavy load, impact force, poor sealing performance of the place to use. Its biggest advantage is the convenience of bearing installation and disassembly, which can save a lot of time and reduce production costs.
Split-type bearings are suitable for all industrial fields, mainly used for converter support, for all kinds of large conveying equipment, cast roller support, elevator and feeder, papermaking machinery and other places that are difficult to disassemble.
Some major international brands are COOPER and SRB in the UK and HKT in South Korea.
What should I do if the split bearing rotates inflexibly?
Split-type bearings are designed and produced by special technology on the basis of integral bearings. Low resistance, stable operation, working temperature up to 180 degrees Celsius. Due to the special process design of split-type bearings than other bearings, it is especially suitable for the places with low speed, heavy load, high impact force and poor sealing performance. Its biggest advantage is the convenience of bearing installation and disassembly, which can save a lot of time and reduce production costs.
Split-type bearings are suitable for all industrial fields, mainly used for converter support, for all kinds of large conveying equipment, cast roller support, elevator and feeder, papermaking machinery and other places that are difficult to disassemble.
The editor learned from the Internet that many users will find the operation of split bearings is not flexible when using split bearings. What’s going on here? We need to look at it on a case-by-case basis to find the best solution. The phenomenon of inflexible movement of split bearings is mainly reflected in three cases. This paper introduces three kinds of phenomena of inflexible operation of split bearing and the solutions to different situations.
Newly assembled rotary split bearing products do not run smoothly
- Check the production date of split-type bearings. If the time is long and the climate is cold, it is possible that the grease viscosity in the raceway is too large, resulting in the failure of operation, which is more prominent in winter in cold areas.
② The idling problem of the newly assembled rotary split bearing product is not solved smoothly: if it can run and there is no other abnormality after the force is added, it can be used normally. If accompanied by abnormal noise, should check for serious injury during transportation.
Split bearing does not run flexibly after reassembly
① Rule out whether the axial clearance after installation of the split bearing cannot compensate for the deformation of the split bearing because the mounting surface of the host and the mounting surface of the split bearing do not match. The split bearing is in a negative clearance state, and the rolling element is difficult to run in the raceway (sometimes accompanied by abnormal noise); Bad meshing or foreign matter stuck in the big and small gears.
(2) Remedy the inflexible operation of the separated bearing after reorganization
(1) Reprocess the installation plane of the host to make the installation plane meet the requirements; Or the gasket enrichment method.
(2) Adjust the meshing clearance of the gear according to the requirements, especially pay attention to the position of the gear runout.
(3) Check to ensure that there is no foreign matter in the meshing position of the big and small gears.
(4) Replace the split bearing with a larger clearance.
In daily use, the split bearing is inflexible during use
(1) Grease is insufficient, fill up as required.
② The seal is damaged, resulting in foreign bodies entering the raceway (such as poor working conditions, dust intrusion into the raceway, etc.).
(3) Check the meshing of the size of the gear, whether there are foreign bodies or broken teeth.
Things to keep in mind when choosing a split bearing.
Of course, when we buy split bearings, we also need to know some selection skills, so as to get more suitable bearings and make mechanical equipment work better.
- Choose according to the fixed load, because the fixed load has the characteristics of synthetic radial load vector and relatively static clamp.
- The split bearing is selected according to the number of rotational loads, because the rotational loads have the characteristics of the synthetic radial load vector with respect to the rotation of the ring.
- Select split bearing according to swing load and variable load. Swing load refers to the synthetic load in which the rotational load is much smaller than the fixed load. The swinging load means that the load on some clamps is sometimes a rotating load, sometimes a fixed load, sometimes a swinging load.
Warm reminder: Because the vibration ring of the split bearing needs to have a certain transition fit or interference fit with the shaft or seat hole, when the interference size is the same as the interference size of the loaded rolling bearing, the vibration type split bearing ring is on the shaft or shaft. The principle is that there is no “creep” phenomenon on the mating surface in the seat hole.
What are the benefits of split housings and flanged housings?
What are the advantages of split-type houses and flanged houses? The answer is as follows:
Division of housing
Split-type bearing housing is the most common mounting component. The product is designed to be divided into two horizontal parts, the cover and the bottom can be separated, so the installation, debugging and maintenance of the equipment is also very convenient. For more demanding equipment, split type bearing seats are also designed with double stud holes and four stud holes. These members mainly bear the radial load directly borne by the inner base. For demanding equipment. This housing can accommodate a wide range of shaft sizes and can withstand higher loads. Heavy duty enclosures are available in gray cast iron as standard, providing greater flexibility in sealing and lubrication options (grease or oil available). Suitable equipment includes: belt processing equipment for steel mills, fans and blowers, felt rollers and dryers for the paper industry
Used for cylinder, crusher, hammer mill and drying furnace in ore processing industry. Standard split enclosures are made of cast iron, cast steel, and ductile iron. LEP/LOR three-ring oil seal, contact oil seal, horn oil seal and end cap can be used for split housing. Make shaft and housing surface work
The clearance is very small to prevent contaminants from entering and retaining grease or oil. So as to ensure that the service life of bearings and bearing housing is longer.
In addition, for large equipment, SKF split housing is available in three types: SAF\SAW and SDAF. The fourth is the extended series, which is custom-designed to meet the needs of large equipment and includes shaft sizes between 250 and 500mm.
Mounting – Cylindrical mounting
Cylindrical hole mounting involves mounting a straight hole bearing to a cylindrical shaft with an interference fit. This assembly method is especially suitable for high-speed equipment. In cylindrical hole installations, the shaft must have tight tolerances in the housing and lock nuts must have machined threads, usually requiring heating of the inner ring.
Mounting – tapered hole mounting
When the adapter is installed, the tapered hole bearing is mounted to the cylindrical shaft through the tapered adapter. Adapter installation is considered a common installation method. Most split-type bearing houses use this method to transfer the bearing to the shaft. The shaft seat does not need to be machined to the tight tolerances required for cylindrical hole installation, and this installation method does not require heated bearings. In addition, due to the use of tapered adapters, disassembly is also quite convenient. The total cost of adapter installation is also lower than that of cylindrical hole installation.
The positioning ring that fixes the bearing in the housing is also called a “fixed” bearing. Other terms are “fixed or floating” or the more common “fixed or unfixed”.
The flange of housing
Flange bearing seat from the shape of many types: square, round, diamond, square boss, round boss, ring type, slider type, etc. The flange bearing housing of the above type has mounting holes, four holes, three holes, two holes and no mounting holes. No mounting hole belongs to the slider type, there are two chutes up and down. It can be moved back and forth on the shelf. Therefore, it is most suitable for situations where the distance between axes needs to be adjusted. The shaft of the machine can also be moved during operation. Mainly used for belt, chain and other drive shaft.
Flanged housing is the most typical and commonly used type for all transmissions and machinery where the shaft is parallel to the mounting surface. It has sufficient strength and stiffness when used.
