Slewing bearing

High quality and high precision rotary bearing

High quality and high precision rotary bearing belong to slewing bearing. They are axial and radial combined cylindrical roller bearings,including two thrust needle roller bearings and a radial cylindrical roller bearing with the combination of axial and radial preload,for the convenience of transportation and fixing, two or three symmetrical screws are fastened to the two rings in order to prevent roller and rings generating collisions which influence bearing accuracy.

In addition to standard parts, we undertake a variety of non-standard workpiece processing

Product   Process

1   Forging raw material 

2  Rough turning   

Rough and finish turning by CNC lathes. Each process will be checked according to the drawings. Especially for the oil groove, ellipse, triangle, outer circle(ring) allowance, inner circle(ring) allowance, and chamfer must meet the requirements of the drawing. Well prepared for next steps.

4  Heat treatmeng      

Heat treatment will be done according to the types of row material.  Row material must ensure the hardness and heat treatment deformation are controlled within the qualified range.

5  Rough machining      

  A: Surface: Make sure that the machine is cooled in place, control the surface(plane)

bending and parallel difference(tolerance). Pickling flaw detection for the first product to see whether there is burning damage

or crack.

   B: Outer diameter(ring): Control ellipse, triangle and size. When the product height is large, repeated grinding is needed .

  C: Inner diameter(ring): Control ellipse, wall thickness and taper. If the product height is large, the vertical difference should meet the requirements.

  D: Raceway: Due to the particularity of the product, it is necessary to grind at a fixed distance and ensure that the cooling is in place. The flaw detection of wall thickness for the sample should be qualified not less than 80%.

6   Hardness lathing                      

 Ensure chamfer, oil groove smooth and without vibration.

7&8   Additional tempering   &  Teeth processing 

The temperature should be within 150 degrees to eliminate interal stress

9  Finish grinding

100% finish grinding the surface, inner diameter and raceway. The key function is to improve the products’ accuracy, eliminate the ellipse and triangle deformation because of the tempering.

10&11     The second  additional tempering   &  Final   grinding       

All procedures should be processed strictly in accordance with the drawings. Special for the temperature difference during tempering; roughness and angle during raceway processing for outer&inner diameter should be 100% inspected.

12  magnetic particle inspection

13&14  Degaussing,cleaning & check  appearance

Finally   Assembling   

The above is all the process flow. We are also very serious about the later packing. We support packing and acceptance in the form of video or on-site visit. Welcome to visit!

Company   profile

Luoyang Liandong machinery Co., Ltd. was established in 2011 with a registered capital of 6 million. The company is located in Luoyang City, Henan Province.We are specialized in the development, production, transformation and maintenance of power equipment, mining equipment, cement machinery equipment, mixing equipment, energy-saving and environmental protection equipment, automatic control equipment, hydraulic and pneumatic equipment, engineering machinery, petroleum equipment, mechanical transmission equipment, etc.; We also produces and processes reducer, gearbox, gear, gear shaft, gear ring, spiral gear, helical gear and bearing , casting and forging, construction mold, injection mold, non-standard mold.To undertake the transformation and maintenance of non-standard equipment and production line in large factories and mines. To provide customers with the best demand solutions.

We  have a mechanical processing branch factory, located in ximagou Industrial Park, Luoyang City, with gear processing, mining accessories processing, power equipment accessories processing, shield machine parts processing and other functional workshops; the existing professional production and technical staff of more than 20 people, equipment hobbing machine, gear grinding machine, lathe, CNC machine tool and automation equipment more than 10 sets, plant area of more than 3000 square meters, is the west of Henan Province One of the most professional production and processing centers for mechanical parts. Our company has long maintained cooperation with major scientific research institutes in the development of scientific and technological projects, which can be targeted for different industries and various complex working conditions to meet the personalized needs of users.

Luoyang Liandong machinery Co., Ltd. takes standardized management, perfect pre-sale technical consultation, after-sale technical guidance, customer-centered, to meet the purpose of users. Sincerely new and old customers to our company's consistent support and guidance.