Shandong Xinkaite Bearing Co.,Ltd.
Unified Social Credit Code: 9137 1525MA3C 5428XP
Production Department
Address: Xu Village Industrial Garden, Gan Town, Guan County, Shandong
Tel: +86 635 5638235
Fax: +86 635 5638808
Mobile: +86 15563545668
Service Hotline: 4000 305204
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Address: 314 Puli Mansion, Beixiaoxinzhuang West Street, Jinan City, Shandong
Tel: +86 15562637177
Fax: +86 531 87901699
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Email: xkte@xinkaite.com
Installation and maintenance of self aligning ball bearing
Clicks:26611 Date:12-15
Pay attention to the main points
From the angle of use, the following points should be paid attention to ensuring that the bearing can work reliably.
1, improve the quality of lubrication, control oil pressure, temperature and flow, strengthening the oil filter.
2, adopt the fuel and lubricating oil that conform to the regulations.
3. The control of the temperature state of the diesel generator set is unfavorable in the case of overcooling and overheating. The cold, diesel engine preheating before starting, and turned by hand crank oil into the friction surface.
4, the surface quality and geometry of the bearing and neck should be strictly guaranteed.
5, the bearing clearance should be appropriate, the generating set is too large to produce impact, too small to lubricate bad, may burn tile.
How to ensure the reliable work of bearing
Generally speaking, we should pay attention to the following points from the angle of use:
1. bearing clearance should be appropriate, too large to produce impact, too small to lubricate bad, may burn tile;
2. the quality and geometry of the surface of the bearing and the neck should be strictly guaranteed.
3. improve the quality of lubrication, control oil pressure, temperature and flow, strengthening the oil filter;
4. the oil and lubricating oil are used in accordance with the regulations.
In order to give full play to the bearing and maintain its due performance for a long time, it is necessary to do a good job of regular maintenance (periodic inspection). It is very important to improve the productivity and economy by the proper periodic inspection, the early detection of failure and the prevention of the accident.
install
Whether the installation of the bearing is correct or not affects the accuracy, life and performance. Therefore, the design and assembly department should fully study the installation of the bearings. It is hoped that the installation should be carried out according to the operating standard. The work standard is usually as follows:
(1) cleaning bearing and bearing parts
(2) check the size and finishing of the connected components
(3) installation
(4) check after installation of bearings
(5) supply lubricants
It is hoped that the packing will be opened before the installation of the bearing. The general lubricating grease is lubricated and not cleaned, and the grease is filled directly. Lubricating oil is lubricated, and it is not necessary to clean, but the instrument or high speed bearing, etc., should be cleaned with clean oil, and the antirust agent on the bearing is removed. The bearing of the antirust agent is removed, and it is easy to rust, so it can not be ignored. Furthermore, have grease sealed bearings, not directly use cleaning.
The installation method of bearing is different because of the bearing structure, coordination and conditions. Generally, because of the rotation of the shaft, the inner ring needs interference fit. Cylindrical bore bearing, multiple press press, or multi - use hot charging method. Tapered bore, directly installed in the taper shaft, or sleeve installation.
When the shell is installed to the shell, the general clearance fits more, the outer ring has the excess amount, usually pressed into the press, or the cold shrink fit method after the cooling is installed. The water in the air will be condensed on the surface of the bearing with the dry ice as the coolant, the cold shrinkage and the installation. Therefore, appropriate measures for rust prevention are needed.
Maintenance
Disassemble
The disassembly of the bearing is regular maintenance and the bearing is replaced when the bearing is replaced. After dismantling, if you continue to use it or check the state of the bearing, the disassembly should be carried out as carefully as the installation. It is difficult to handle the dismantling of the bearing parts, especially the interference fit bearings.
It is also very important to design and make disassembly tools according to the needs. In disassembly, the method of disassembly, the order of disassembly and the matching conditions of the bearing are investigated in order to get the total loss of the disassembly operation.
The outer ring of the outer ring is broken off, and the outer ring of the interference fit is arranged. A plurality of outer ring extrusion screws are arranged on the circumference of the shell in advance, and the screws are uniformly screwed on the same side, and the other side is disassembled. These screw holes are usually covered with blind bearings, tapered roller bearings and other separation bearings. There are several incisions on the outer part of the shell, which are disassembled with a press, or tapped by a press.
The disassembly of the inner ring can be pulled out of the simplest by the press. At this time, we should pay attention to the inner ring to bear its pulling force. Furthermore, as shown in the drawing fixture is also used, regardless of the kind of fixture, it must be firmly clamped in the inner side. Therefore, need to consider the shaft shoulder size, or study in shoulder processing on the channel, in order to use the drawing fixture.
The internal ring of large bearing is dismantled by oil pressure method. The oil pressure is placed on the oil hole of the bearing to make it easy to pull. Width of the bearing oil injection combined with drawing fixture, disassembly operations.
The inner ring disassembly of cylindrical roller bearings can be used by induction heating. A method of heating a part in a short time so that the inner ring is expanded after expansion. It is necessary to install a large number of this type of bearing inner ring, and also use induction heating.
Clean
When the bearing is removed, the appearance of the bearing is recorded by means of photography. In addition, the amount of the remaining lubricants should be confirmed and the lubricants are sampled, and then the bearings are cleaned.
A, the cleaning of the bearing is washed and cleaned, and the metal grid can be placed at the bottom of the container used.
B, when washing, use a brush to remove grease or adhesive in the oil. At this time, if the bearings are rotated in the oil, it will be noted that the rolling surface will be damaged by the foreign objects.
When the C is cleaned, the bearing is slowly rotated in the oil, and it must be carried out carefully.
The usual cleaning agent is neutral and non hydrated diesel or kerosene, and sometimes the temperature alkaline solution is used according to the need. No matter which kind of detergent is used, it should be regularly filtered to keep clean.
After cleaning, antirust oil or antirust grease will be coated on the bearing immediately.
Inspection and judgment
In order to determine whether the removed bearing can be reused, we must focus on checking its dimensional accuracy, rotation accuracy, internal clearance and mating surface, raceway surface, cage and seal ring. Because the large bearing can not be rotated by hand, check the rolling body and roll.
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