Product Details

● Introduction

In design, the double row deep groove ball bearings are basically the same as the Single Row Deep Groove Ball Bearings. The bearing consists of an inner ring, an outer ring, two sets of cages and two sets of steel balls, and two nylon cages are inserted into the two sides of the bearing respectively. In addition to having a radial load capacity 1.62 times higher than that of single row deep groove ball bearings, the bearing can also withstand axial loads. In addition to bearing radial loads, Bearings can also withstand axial loads acting in both directions. Double row deep groove ball bearings are suitable for a bearing arrangement where single row deep groove bearings cannot be loaded. Under normal circumstances, if the bearing is to bear pure axial load, it should not exceed 0.5Co. Excessive axial load may greatly reduce the working life of the bearing. The external dimensions of the bearings accord with DIN 625-3, the dimensional tolerances and rotational accuracy accord with standard DIN 620.

Bearings are used in many fields, including machinery and equipment, precision instruments, machine tool equipment, conveying equipment, agricultural machinery, textile machinery, industrial equipment, etc.

● Bearing Series

The types of the double groove ball bearing include 4200 series and 4300 series.

● Production Details

◆ Process of machining inner and outer rings

The process of inner ring processing: grinding end face → rough grinding inner diameter → fine grinding outer diameter → inner groove (branch outer diameter) → fine grinding inner diameter (branch outer diameter) → inner groove superfinishing (branch outer diameter or inner diameter).

The process of outer ring processing: grinding end face→grinding outer diameter→finishing outer diameter→grinding outer groove→superfinishing outer groove.

◆ Sampling inspection

The theoretical basis of sampling test is probability theory, mathematical statistics, management and economics. It is an important part of statistical quality control and one of the contents of quality assurance model. Sampling inspection should reflect scientificity and usability. A "good" sampling inspection system includes the lowest inspection cost (economical), effective control of product quality (scientificity), and inspection of product quality and reliable evaluation conclusions (reliability), and easy implementation (usability) .

● Bearing Static Load Rating

The rated static load of the bearing refers to the total permanent deformation of 0.0001 times the diameter of the rolling element at the contact center of the rolling element and the raceway that can withstand the maximum load. It is the equivalent static load that does not affect the subsequent operation of the bearing. Depending on the requirements for smooth running and friction, and the actual contact surface geometry, the allowable equivalent static load can be less than, equal to or greater than the rated static load. Selected by calculating the static load safety factor F. In general, it requires a bearing with smooth operation and extremely low noise, the value of F should be high. For occasions where only moderate running noise is required, the value of F can be smaller. Recommended selection: F=1.5~2.5 is suitable for low noise requirements. F=1.0~1.5 is suitable for normal noise requirements. F=0.7~1.0 is suitable for medium noise requirements.

● Why Choose Us

Shaanxi Gainhui Heavy Industries Co., Ltd. has complete quality control system, professional quality inspection department, equipped with advanced inspection equipment and professional inspection personnel. We have advanced testing methods and processes, complete technical data and drawings. Our company controls the bearing production process strictly, formulates complete quality inspection system, monitors the entire process from purchasing raw materials, forging, turning, heat treatment, grinding, assembly and packaging.

● About Us

Shaanxi Gainhui Heavy Industries Co., Ltd. is a professional bearing manufacturer and and distributor in china. Equipped with a professional large factory, we can supply competitive bearing products and OEM service to worldwide customers. With high quality, competitive price and great after-sale service of double row deep groove ball bearings, welcome to contact us in time.

Because we are focused, we are professional.

● Packing Methods

● Delivery Methods

● Technical Parameters

For more data, please click the download button at the top of this page to download the catalogue.

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