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SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine

China SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine, Find details about China Roller Bearing, Ball Bearing from SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine

Model NO.
SD. 750.20.00. C
Type
No Gear
Craft
Grinding
Precision
P5/P4/P2
Weight
38kg
Delivery Period
40 Days
Isolation Block
Plastic
Heat Treatment
Surface Hardening
Warranty
1 Year
Trademark
LYDZC
Transport Package
Wooden Box
Specification
534*748*56
Origin
Luoyang, China
HS Code
84821020
Model NO.
SD. 750.20.00. C
Type
No Gear
Craft
Grinding
Precision
P5/P4/P2
Weight
38kg
Delivery Period
40 Days
Isolation Block
Plastic
Heat Treatment
Surface Hardening
Warranty
1 Year
Trademark
LYDZC
Transport Package
Wooden Box
Specification
534*748*56
Origin
Luoyang, China
HS Code
84821020
 SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
                    Cross roller bearing, because the divided inner ring or outer ring is fixed with the cross roller collar after the rollers and spacer are installed, so as to prevent the cross roller collar from being separated from each other, it is easy to operate when installing the cross roller collar. Because the rollers are arranged crosswise, only one set of crossed roller collars can bear loads in all directions, and the rigidity is improved by 3-4 times compared with the traditional model. At the same time, because the inner ring or outer ring of the crossed roller bearing is of a split structure, the bearing clearance can be adjusted, and even if a preload is applied, high-precision rotary motion can be obtained.                                 
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
                The above slewing bearing can also be divided into three different types.
                              #1  Slewing bearing with no gear
                              #2  Slewing bearing with external gear
                              #3  Slewing bearing with internal gear
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
The size of the inner and outer rings of the crossed roller bearing is minimized, especially the ultra-thin structure is close to the limit of small size and has high rigidity, so it is most suitable for a wide range of applications such as joints or rotating parts of industrial robots, rotating tables of machining centers, rotating parts of manipulators, precision rotating tables, medical instruments, measuring instruments, IC manufacturing devices, etc. 5. High speed capability 6. Reduce the shaft length and processing cost, and thermal expansion leads to limited changes in geometric dimensions 7. Using nylon divider, the moment of inertia is low, the starting torque is low, and the angle division is easy to control 8. Optimize the pre-tightening force, with high rigidity and high running accuracy of the guide roller 9. Carburized steel provides excellent impact resistance and surface wear resistance 10. Simple but well lubricated


SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
 SD.750.20.00.C    is ball slewing ring bearing without  gear teeth

 SD.750.20.00.C    Product structure 
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
                      SD.750.20.00.C  Live shooting

SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
                                                                           
                                                               SD.750.20.00.C   detailed product parameters
   
Designation DimensionsMounting Hole SizeStructure dimensions Coa(kN)kg 
 INARothe ErdeTG DdHD1D2n1n2φ1φ2D4d2H1H2d1D3 
  230.20.0400.013  518304564903328121818  45.545.5415.5412.525023.4 
  230.20.0400.503  5183045649033216241818  45.545.5415.5412.525023 
   SD.505.20.00.C 5183045649033281218φ184533754646415.5412.550024.3 
LYDZ200414ZTVLU200414ZT   51830456490332812φ18φ18458.5369.547.547.5415.5412.560026.5 
LYDZ200414VLU200414   518304564903328121818  47.547.5415.5412.529523.5 
  230.21.0475.013  517305564903328121818  45.545.5415.5412.525023.4 
  230.20.0500.013  6484345662046210141818  45.545.5545.5542.533031 
  230.20.0500.503  6484345662046220281818  45.545.5545.5542.533030.4 
   SD.650.20.00.C 64843456620462101418φ185835054646545.5542.566032 
  230.20.0500.013  648434566204622028φ18φ1858350545.545.5545.5542.566030.4 
LYDZ200544ZTVLU200544ZT   648434566204621014φ18φ18588.5499.547.547.5545.5542.580035.4 
LYDZ200544VLU200544   6484345662046210141818  47.547.5545.5542.538531 
   SD.650.20.00.C 648434566204621014φ18φ185835054646545.5542.540031 
  230.21.0575.013  6474355662046210141818  45.545.5545.5542.533031 
  230.20.0600.013  7485345672056212161818  45.545.5645.5642.539036.4 
  230.20.0600.503  7485345672056224321818  45.545.5645.5642.539035.8 
   SD.750.20.00.C 74853456720562121618φ186836054646645.5642.578038 
LYDZ200644ZTVLU200644ZT   748534567205621216φ18φ1868560247.547.5645.5642.578038 
LYDZ200644ZTVLU200644ZT   748534567205621216φ18φ18688.5599.547.547.5645.5642.590042 
LYDZ200644 VLU200644   7485345672056212161818  47.547.5645.5642.545536.5 
   SD.750.20.00.C 748534567205621216φ18φ186836054646645.5642.546036.5 
  230.21.0675.013  7475355672056212161818  45.545.5645.5642.539036.4 
   SD.750.20.00.C 746536567205621216φ18φ186836054646645.5642.578038 
  230.20.0700.013  8486345682066212161818  45.545.5745.5742.545042.8 
  230.20.0700.503  8486345682066224321818  45.545.5745.5742.545042.2 
LYDZ200744ZTVLU200744ZT   848634568206621216φ18φ18788.5699.547.547.5745.5742.5105045 
LYDZ200744 VLU200744   8486345682066212161818  47.547.5745.5742.553042.5 
  230.21.0775.013  8476355682066212161818  45.545.5745.5742.545042.8 
  230.20.0800.013  9487345692076214181818  45.545.5845.5842.551047.8 
  230.20.0800.503  9487345692076228361818  45.545.5845.5842.551047.1 
   SD.950.20.00.C 94873456920762141818φ188838054646845.5842.5103050 

                           We do customised Rothe Erde model slewing ring bearing:
Standard Series KD 210
250.14.0300.013, 250.14.0400.013, 250.15.0300.013,
250.15.0400.013, 250.15.0375.013, 250.15.0475.013

230.20.0400.013, 230.20.0500.013, 230.20.0600.013,
230.20.0700.013, 230.20.0800.013, , 230.20.0900.013, 230.20.1000.013

231.20.0400.013, 231.20.0500.013, 231.20.0600.013, 231.20.0700.013, 231.20.0800.013
231.20.0900.013, 231.20.1000.013

232.20.0400.013, 232.20.0500.013, 232.20.0600.013, 232.20.0700.013
232.20.0800.013, 232.20.0900.013, 232.20.1000.013

230.20.0400.503, 230.20.0500.503, 230.20.0600.503, 230.20.0700.503
230.20.0800.503, 230.20.0900.503, 230.20.1000.503

231.20.0400.503, 231.20.0500.503, 231.20.0600.503, 231.20.0700.503
231.20.0800.503, 231.20.0900.503, 231.20.1000.503

232.20.0400.503, 232.20.0500.503, 232.20.0600.503, 232.20.0700.503
232.20.0800.503, 232.20.0900.503, 232.20.1000.503

230.21.0475.013, 230.21.0575.013, 230.21.0675.013, 230.21.0775.013
230.21.0875.013, 230.21.0975.013, 230.21.1075.013

231.21.0475.013, 231.21.0575.013, 231.21.0675.013, 231.21.0775.013
231.21.0875.013, 231.21.0975.013, 231.21.1075.013

232.21.0475.013, 232.21.0575.013, 232.21.0675.013, 232.21.0775.013
232.21.0875.013, 232.21.0975.013, 232.21.1075.013
Standard Series RD 900
191.20.1250.990.41.1502, 191.20.1400.990.41.1502, 191.20.1600.990.41.1502
191.20.1800.990.41.1502, 191.20.2000.990.41.1502, 192.20.1250.990.41.1502
192.20.1400.990.41.1502, 192.20.1600.990.41.1502, 192.20.1800.990.41.1502
192.20.2000.990.41.1502, 191.25.1800.990.41.1502, 191.25.2000.990.41.1502
191.25.2240.990.41.1502, 191.25.2500.990.41.1502, 191.25.2800.990.41.1502
192.25.1800.990.41.1502, 192.25.2000.990.41.1502, 191.32.2240.990.41.1502
191.32.2500.990.41.1502, 191.32.2800.990.41.1502, 191.32.3150.990.41.1502
191.32.3550.990.41.1502, 191.32.4000.990.41.1502, 192.32.2240.990.41.1502
192.32.2500.990.41.1502, 192.32.2800.990.41.1502, 192.32.3150.990.41.1502
192.32.3550.990.41.1502, 192.32.4000.990.41.1502, 191.40.2800.990.41.1502
191.40.3150.990.41.1502, 191.40.3550.990.41.1502, 191.40.4000.990.41.1502
191.40.4500.990.41.1502, 192.40.2800.990.41.1502, 192.40.3150.990.41.1502




                                                   LYDZC Bearing
          Four-point contact ball turntable bearing is one of the widely used parts, and almost all the bearing manufacturers and workers have dealt with it. Most colleagues think that turntable bearing is a very difficult "opponent", which is easy to crack in water quenching but not hard in oil quenching. The bearing is mainly used for assembling various mechanical equipment, and the large bearing can be used in a rotating state, and the positioning direction of the machinery can also be changed; Small bearings are basically quenched and tempered. According to requirements, bearings can also be tempered at low or medium temperature after quenching. With the development of national economy and the demand of export-oriented economy, 010.40.800 bearing can be used not only to manufacture various components in engineering, but also to manufacture low-grade optional parts, as well as slow cutting wire equipment, pig raising equipment, and also to assemble various hardware tools such as various machines, as well as various garden machinery and agricultural machinery tools. The following is a brief introduction to the production technology and surface modification of turntable bearings for reference by colleagues in the industry. I. Chemical composition, critical point of heat treatment and general process of 010.40.800 The general heat treatment process of four-point contact ball turntable bearing is as follows: 1) blank softening treatment: 740~760ºC×4~6h, furnace cooling to 600ºC at a cooling rate of 50~100ºC/h, and air cooling. 2) Normalization: heating at 850~870ºC, discharging and air cooling. 3) Quenching and tempering: quenching at 840~860ºC and tempering at 450~550ºC. 4) Quenching+tempering: heat quenching at 820~840ºC, and select appropriate coolant according to the actual situation; Tempering process depends on the required mechanical properties of the workpiece.
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
                                      Strict production process
1.Drawings    
According to the customers specific requirements, the field where the bearing is used and working conditions. We optimize the design of products in order that the customers could economize and get their desired pruducts
2.materials
All the materials are high-quality bearing steel with high purity. The quality is strictly inspected and checked. The high quality of the product is guaranteed from the first procedure.

3.Forging
The professional forging equipment and advanced set-forging process are used. 
Steel bar is heated with the medium frequency induction and its different positions temperature is measured with the thermometer. After heating and thermal hydraulic shear, they are forged in accordance with the needs of grind and expansion. Then they are groud and expanded with CNC grinding machine so that the products could meet the technological requirements in size and geometry

4.Heat treatment annealing
All products are produced with the spheroidal annealing to ensure the product temperature uniformity good internal structure and other characteristics which is beneficial to the next step turning and quenching.
Heat treatment with quenching and tempering
The heat treatment in strict accordance with advanced process and the precious control quenching ensure that the bright quenching effect be reached
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
5.Rough grinding
Although it is a rough grinding process,  we still strictly control the size accuracy and geometric accuracy to lay a solid foundation for the precise grinding quality
Stable tempering
We have stable tempering on the ring after the rough grinding to eliminate stress and further stabilize the size and geometric precision
Thus guarantee high-quality products
6.Precision grinding
The use of advanced CNC automatic production ensure that the geometric accuracy of the product reach P4 or P2
Flaw detection
Every single crack of the spare parts must be detected thoroughly to guarantee Zero Defect
Demagnetization
The residual magnetism of bearing parts is eliminated to relieve the harm to the bearings and get high-quality product
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
7.Assembling
We use automatic assembling line with online inspection of vibration noise and clearance etc and classify the quality level strictly. All these measures guarantee delivery of qualified products to customers 
8.Spare parts
We choose steel ball ,cage ,dust cover , sealing ring , grease  ,and other parts in line with international standards to ensure our product quality
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
9.Cleaning ,  locating cleaning
drying ,  oiling , greasing  packaging  storage  and delivery
SD. 750.20.00. C Ball Bearing Automatic Grinder Single Column Hydraulic Press Planer Dump Truck Lift Crawler Excavator Tower Crane Rebar Cutting Machine
    Every process is perfect and any defective product is combed out

 

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