Problems and trends in the bearing manufacturing industry

Problems and trends in the bearing manufacturing industry

Grinding is the core means of the bearing manufacturing industry. It occupies the main production time and cost. The quality of grinding and productivity are related to the success of bearing companies. Floating gripper type centerless grinding (commonly referred to as 'Microcentric') is the most common technique for producing bearing rings. It is so common because of three main advantages:
– Very fast workpiece handling.
- The bearing ring is ground without stress. After processing, it has almost no deformation.
– It is entirely possible to achieve better accuracy/roundness beyond the spindle of the machine itself. At the same time, Microcentric has several important fundamental weaknesses:

1. The geometric and dynamic stability during grinding is low. The roundness of the final bearing ring is very sensitive to the optimum position of the "floating clamp arm", the initial roundness of the ring, the feed rate and other conditions, and so on. Due to the above factors, each harmonic may be generated again and more and more.
2. A lot of time is spent on modifying the settings of the machine, and only trained people can do the job. The operator must find the optimum position of the “floating clamp arm” (the angle between the α and β of the floating clamp arm and the grinding point). The optimal α-β angle is the balance between achieving the best accuracy and highest efficiency. It usually takes multiple iterations. In addition, this technology requires regular accuracy monitoring and regular machine adjustments.
3. The rigidity of the workpiece processing system is insufficient - thin-walled bearings - it has become a huge problem in the processing of thin-walled bearings.

Overcoming the above technical deficiencies is crucial. At present, the global bearing market is highly competitive. The market demands higher precision and more customer-specific bearings, but the price is moderate. Many bearings are produced in small batches. Under such conditions, to make money, technical flexibility is the key. Unskilled industrial labor that lacks technology has hit all economies. Long and complicated machine setups turn into a real problem. In addition, because of the new steel material application and advanced design, modern bearings become lighter and lighter, which means that the bearing ring becomes thinner and thinner, and the rigidity of the bearing workpiece system is getting lower and lower.
Related News
  • Bearing Storage Manual

    Bearing Storage Manual

    August 24, 2019Bearing storageThe conditions in which bearings are stored can have adverse effects on operational performance. Inventory control also exerts an important role on bearing performance, particularly sea...view
  • How to identify the quality of rolling bearings?

    How to identify the quality of rolling bearings?

    July 28, 2019(1) Identification of radial ball bearingsFor a radial ball bearing with normal technical state, the inner and outer ring raceways shall be free of flaking and severe wear marks, and shall be a bright...view
  • Installation Of Deep Groove Ball Bearings

    Installation Of Deep Groove Ball Bearings

    February 26, 2019Preload RequirementsFor the required precision deep groove ball bearing drive, such as deep groove ball bearing spindle, there are often preload requirements. These deep groove ball bearing preload ar...view
  • Simple and practical cleaning method for ball transfer units

    Simple and practical cleaning method for ball transfer units

    June 22, 2019Ball transfer units(also called universal ball bearings) are important accessories in many industries and have very good lubrication properties. Universal ball bearings can be subdivided into light-punching a...view
  • What causes synchronous belt noise and how can it be reduced?

    What causes synchronous belt noise and how can it be reduced?

    December 29, 2019BY DANIELLE COLLINS Synchronous belts are common in motion systems, providing smoother operation and better high-speed performance than chains and lacking the problems of slipping and stretching that ...view
  • What makes a quiet bearing?

    What makes a quiet bearing?

    August 31, 2019Noise coming from a bearing is commonly associated with damaged wheel bearings in cars. When wheel bearings become damaged, excess noise is probably the easiest way to identify the bearing is broken. ...view
  • TEL:+86-574-6399-8066
  • FAX:+86-574-6399 8025
  • EMAIL:
  • ADDRESS:No.500, North 3rd Ring Road West, Cixi, Ningbo, 315300, China