VCD has its own professional bearing life testing machine for bearing lifespan testing.

We place the bearing into (ABLT-3). Set a radial load of 1KN and an axial load of 500N, and run continuously at a speed of 15000 revolutions per minute for 1000 hours, then disassemble the bearing for analysis. Through experiments, VCD bearings have the advantages of long service life and high durability.

1. Diversification of VCD sealing ring materials

Nitrile rubber NBR (-40~250F) 40~90 Low compression characteristics, high ductility, high wear resistance, excellent oil resistance, not suitable for high temperature conditions, and avoid direct sunlight and chemical (such as acid ether ester, etc.) erosion.

Hydrogenated nitrile rubber HNBR/NEM (-30~330F) 50~90 Heat resistant, high ductility, improved physical strength and chemical corrosion resistance, but not suitable for ultra-low temperature conditions, avoid direct sunlight and chemical erosion (such as acid ether ester, etc.).

Fluororubber FKM/FPM (-20~400F) 50~95 High temperature resistant, significant chemical corrosion resistance, resistant to corrosive petroleum products (such as acid and silicone oil), not suitable for situations requiring low temperature flexibility.

Acrylic rubber ACM Rubber (0~350F) 40~90 Strong resistance to thermal oil, direct sunlight, and ozone degradation corrosion while having strong crack resistance. Poor waterproof performance, not suitable for ultra-low temperature working conditions.

Lubricant selection

VCD has had many years of in-depth cooperation with several internationally renowned grease suppliers as part of the company's service support. From a range of lubricants, our company has set a series of greases suitable for rolling bearings.

2. High temperature resistant grease

High temperature resistant grease includes good synthetic crude oil with thermal stability characteristics and contains organic or inorganic thickeners. However, for long-lasting lubrication, VCD recommends that the working temperature should be relatively lower than the limit temperature to achieve satisfactory operating time.

3. Low temperature resistant grease

The minimum viscosity of lubricating grease increases at low temperatures, exhibiting excellent low temperature stability. Suitable base oils for low temperatures are synthetic esters, perfluoropolyether oils, and olefins.

When bearings operate under load, heat is generated internally due to rotation, sliding, and friction. As the operating speed of the bearings increases, the temperature also rises. If the speed is too high and the temperature exceeds a certain limit, the effectiveness of the lubricant will be significantly reduced, and the bearings will not be able to operate stably.

To control the temperature rise under high-speed conditions, the VCD Technology Center has conducted a series of experiments with globally renowned greases tailored to the characteristics of bearings required by different industries. Their overall performance under high speed is outstanding, especially in terms of high-temperature resistance and service life.

Generally, people only measure the temperature of the outer diameter of the bearing, which is an unscientific practice. In most cases, although the surface temperature of the bearing is only 40°C, the internal temperature and that of the grease may have reached as high as 100°C. VCD pays more attention to the maximum internal temperature of the bearing when selecting grease and sealing materials.

In recent years, VCD has been committed to reducing friction, making mechanical operation more efficient. Through optimized design, lubrication, retainers, and manufacturing technology, our deep groove ball bearings currently have significantly reduced friction torque or friction loss in certain bearing sizes and application conditions, with some even reducing by 30% compared to traditional bearings. When bearings operate at high speeds, the friction between the raceway and the balls is the most important factor leading to an increase in bearing temperature. To reduce friction, it is necessary to control the precision and roughness of the raceway. For this purpose, we use fully automatic ultra-precision machines in the processing of bearing raceways, and effectively monitor raceway precision and roughness with internationally leading "Taylor Hobson" equipment.

Sealing performance is crucial for the cleanliness of grease and the overall service life of bearing applications. The sealing performance of a good bearing must be able to block contamination and ensure grease leakage. VCD bearings have multiple patented technologies such as "a deep groove ball bearing with a one-sided dust-proof cage" and "an embedded lip self-compensating sealing ring" to better meet the protective needs of bearings.

In order to make product development more efficient and reduce the likelihood of problems after the product enters the market, VCD strictly follows the IATF16949 procedures for development, quality, and production requirements.

Experimental and testing equipment

In recent years, VCD has continuously invested funds in research and development. The company's R&D center is equipped with excellent measuring equipment that can be used to test, analyze, and evaluate bearings. VCD bearings undergo 100% noise and vibration checks as well as appearance inspections before leaving the factory.

Our company obtains stable size tolerances through self-inspection, random inspection, patrol inspection, and full inspection during the production process, thereby ensuring the accuracy of the bearings.

Roughness, roundness, and profile analyzer

The low noise and vibration of bearings have become increasingly important in most applications. One of the main reasons for high vibration values is the roughness of bearing components. VCD bearings use the imported "Taylor Hobson Tester" from the UK, which can effectively obtain the roughness of semi-finished products during production, providing solid and reliable data for the company's quality and production department to improve processes and quality control. This device measures roughness amplitude in nanowaves, meeting the requirements for precise measurement and obtaining analytical data.

Noise testing

In the production of VCD bearings, the channel analyzer is used to measure the amplitude and frequency distribution of vibrations. Our company's automated production line integrates the channel analyzer, which can electronically convert signals through a heterodyne process, allowing them to emit sound and see feedback data. This enables timely control of bearing noise during production, allowing for prompt adjustments when issues are detected, thereby reducing defect rates and improving production efficiency.