Product Specifications
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Product Description
Slewing bearing is a special bearing, which can bear combined axial, radial loads and tipping moment.
Characteristics:
Slewing bearing is a special bearing, which can bear combined axial, radial loads and tipping moment. Generally, slewing bearing is equipped with installation holes, lubricant holes and sealing devices in order to meet various requirements of main equipments in various operation conditions. Besides, slewing bearing features compact in structure, convenient to guide and rotate, easy for installation and maintenance. It is widely used rotary devices for rigging, transportation equipment, excavating equipment, port equipment, medical equipment and military equipment.
Types:
Slewing bearing is classified according to its structure into:
1. Four-point contact ball slewing bearing
This type is generally composing of two housing washers, which is compact in structure and light with steel balls contacting with spherical cage at four points. It can bear axial, radial loads and tipping moment. It can be used for construction equipment including rotary transporter, welding machine, small/medium sized crane and excavators. Four-point contact ball slewing bearing honors quite high dynamic load capacity.
1. Double-row angular contact ball slewing bearing
This type is equipped with three housing washers. Steel ball and separator can be directly LED to top/bottom cage. Two steel balls in different bores are equipped to fit for different load condition. This kind of configuration is quite easy to operate, which can bear heavy axial load and tipping moment. It is quite big in axial/radial size and compact in structure, which makes it particularly suitable for those equipments like bridge crane and truck-mounted loading/unloading equipment.
1. Crossed cylindrical roller slewing bearing
This type is generally composed of two housing washers, which features compact in structure, light, precise in manufacturing and small clearance during assembly. Thus it requires high-level precision for installation. Roller is laid across. It is capable to bear axial load, tipping moment and heavy radial load, which is widely used in rigging, transportation, construction equipment and military porducts. Besides, it can bear heavy static load. Furthermore, preloaded mounting can be reached to have rigid support and precise rotary.
1. Three-row cylindrical roller combined slewing bearing
This type is composed of three housing washers, raceway of which is separable in top, bottom, radial and axial direction. This makes to accurately define load of each row of roller. It can bear various loads at the same time rating first place in bearing capacity among four kinds of bearings.
It has big axial/radial dimension as well as strong structure, which are particularly suitable for heavy equipment requiring big diameter, like wheel excavator, wheel crane, liquid steel turret and heavy-duty truck-mounted crane. This bearing can lift bearing capacity and lead it to its radial direction and various loads can be born by each raceway and roller set, then its diameter can be decreased largely under same force condition, therefore it makes its main body compact featuring high bearing capacity as slewing bearing.
Also, the slewing bearing can be classified according to gear into:
1. Slewing bearing without gear
2. Slewing bearing with external gear
3. Slewing bearing with internal gear
Luoyang Jiawei Bearing Manufacture Co., Ltd., is an enterprise that manufacture and sell turntable bearings, great or weithty bearings and non-standard bearings. It is advanced in tumtable bearing and special bearing's research and development. It began to sell weighty turntable bearings abroad in 2003 and got very good remark.
Our company to relies on the most important bearing manufacture base-Luoyang. So We have strong technical force. Our ability of tackle key problems of products in the same trade. Our technical persons make innovations and develop new products gradvally. And through many times trainings and chechs, we got professional worker stuff. They work strickly and they are very strict with our product's quality.
Brief machines and intruments: 5meter 4 meter 2.5meter 1.6meter huge vertical lathes, 5meter huge teeth-miller 3.5meter universal grinder and 80mm radial drill and so on.
We have been certified by quality management system in accordance with ISO9001: 2000 and also have been authorized to operate import and export. We have many years history in manufacturing slewing bearing and our products are exported to USA, England, France and some other western countries.
1. General:
Our company manufactures various kinds of slewing bearing for different applications, such as stacker reclaimer, lade turret, offshore crane, medical equipments, engineering machinery, mineral machinery, windmill, steel mill, etc. The types we produce include:
Single-row four-point contact ball slewing bearing;
Double-row four-point contact ball slewing bearing;
Three-row cylindrical roller slewing bearing;
Crossed cylindrical roller slewing bearing;
Crossed taper roller slewing bearing;
Ball and cylindrical roller slewing bearing.
2. Bearing materials:
Inner and outer rings: GCr15(SAE52100, 100Cr6), 45# (C45), 50Mn, 42CrMo(42CrMoV);
Seal: NBR, VITON;
Cage: Nylon, steel, brass, AL;
Grease: Ca+ base, Li+ base grease (Such as Shell, Kluber, Chevlon etc. -- We can use the grease as per customer's instructions);
Packaging: Plywood case, plywood pallet, iron pallet.
3. Documentations:
We record the complet documentations for traceability.
Raw material certification;
Forging part certification;
Heat treatment certification;
Hardness valuse report;
Ultrasonic testing;
Rolling part (ball/ roller) certification;
Seal physical and chemical testing;
Cage certification;
Process flow records;
Final dimensional report.
Manufacturing facilities and technical abilities
Our inspecting and testing instruments are advanced and complete, engineers are professional, and management system is scientific. So we can offer slewing bearings with various types, specifications, and precision grades.
Our R&D and effective operation create a good production base. High standard material, advanced inspection equipment, standard inspection process, and mature craft (cast, lathe, heat treatment, grinder, mill and bore) make a reliable quality. We always believe that quality is the soul of an enterprise.
We are looking forward to your enquiry and to cooperating with you successfully with "win-win" concept.
