Luoyang Slewing Bearing Material
What are the commonly used for luoyang slewing bearings materials?
Slewing bearing, also called slewing ring bearing, is often used in engineering and manufacturing machinery, such as excavators, roadheaders, wind power generation equipment, industrial robots, port machinery and other equipment.
The slewing bearing is usually composed of ferrules, rolling elements, cages, sealing rings, etc. Since different parts have special functions in practical applications, there are different considerations in the design and selection of slewing bearing materials.
1.slewing bearing materials for ring and rolling elements
In general, the rolling elements of the slewing ring material are made of carbon-chromium bearing steel which is hardened as a whole. The grade is made of GCr15 or GCr15SiMn steel; the slewing bearing ring material is made of surface hardened steel.
When the user has no special requirements,the slewing bearing material it is generally made of 50Mn steel, but sometimes in order to meet the needs of the host in some special applications For specific use conditions,the slewing bearing material select other grades of surface hardened steel, such as 42CrMo, 5CrMnMo, etc.
Small and medium-sized slewing bearing forgings all use round or square bars as blanks. The grain structure and mechanical properties of the bar are uniform and good, the shape and size are accurate, and the surface quality is good, which is convenient for mass production.
As long as the heating temperature and deformation conditions are reasonably controlled, forgings with excellent performance can be forged without large forging deformation.
Ingots are only used for large forgings. The ingot is an as-cast structure with large columnar crystals and a loose center.
Therefore, through large plastic deformation, the columnar crystals must be broken into fine grains, and the loose compaction can be obtained in order to obtain excellent metal structure and mechanical properties.
2. Materials for cage
The cages for slewing bearings materials have integral, segmented, spacer block and other structural forms. where integral and segmental hold
The frame is made of 20-gauge steel or ZL102 cast aluminum alloy. The spacer block type is made of polyamide 1010 resin, ZL102 cast aluminum alloy, etc.
In recent years, with the continuous development of the material industry, nylon GRPA66.25 has also been popularized and applied in the design of segmented cages.
3. Slewing bearing materials of sealing ring
The slewing bearing materials sealing ring is made of oil-resistant nitrile rubber, oil-resistant rubber and fluorine rubber. The slewing bearing materials used for the seals must be able to withstand a wide operating temperature range and have certain chemical resistance.
The codes of the ferrule for slewing bearing material and the supply status of the blank are as specified in the table. In the table, “T” means that the blank of the ring is supplied in a quenched and tempered state, and “Z” means that the blank of the ring is supplied in a normalized state.
Code 01 02 03 04 05 06.
Material and rough state 45BT 45BZ 42CrMoT 42CrMoZ 5CrMnMoT 5CrMnMoZ.
Code 07 08 09 10 11 12.
Material and rough state 42SiMnT 42SiMnZ 45MnT 45MnZ 50MnT 50MnZ.
The diameter of the center circle of the rolling element is 3150mm, the diameter of the ball is 75mm, the gear modulus is m=20mm, the ring material is 50Mn, and the blank material is the normalized state. .
The above is a brief introduction to the commonly used materials for slewing bearings. Luoyang MC is a comprehensive entity enterprise integrating design, research and development, production, sales and service of slewing bearings/slewing bearings.
It mainly produces slewing ring/slewing ring bearings with a diameter of 50-9800mm and various high-precision slewing rings, large thrust ball bearings, non-standard special-shaped bearings and other products.
The precision covers four grades of P0, P6, P5, and P4. Four-point contact ball structure, crossed cylindrical roller structure, three-row cylindrical roller structure, double-row ball slewing bearing, ball-column joint structure, thin-walled flange structure, large thrust ball structure, etc.
