Double Row Spherical Roller Bearings

● Introduction

Double row spherical roller bearings consist of an inner ring with double raceways, two rows of spherical rollers, cage and a large spherical outer ring. The outer ring of the bearing has 1 shared spherical raceway, the inner ring has 2 raceways, which are inclined at an angle relative to the bearing axis, so that the bearing can be self-aligned, and is not affected by the asymmetry of the shaft and the bearing housing or the shaft deformation, coaxial degree errors are compensated. In the section perpendicular to the rolling direction of the bearing, the generatrix of the roller is a curve, which can be well matched with the inner and outer raceways, the rollers and the raceway are in line contact, so the double spherical roller bearings can withstand a large radial load and can also withstand bidirectional shafts. It has a large bearing capacity, anti-vibration and impact resistance. The rollers have a high degree of agreement with the raceway, they are all curved generatrixes, so the relative sliding is serious, the friction is larger than that of the cylindrical roller bearing, so the allowable working speed of the spherical roller bearing is lower. Double row spherical roller bearings are particularly suitable for working under heavy or vibrating loads, but cannot withstand pure axial loads. The inner hole of the bearing is divided into two types: cylindrical and conical, and the taper of the conical taper hole is 1:30 and 1:12.

Spherical roller bearings can be used in mining, metallurgy, papermaking, construction and other large-scale machinery and equipment, such as papermaking machinery, reduction gears, railway vehicle axles, rolling mill gearbox bearing seats, rolling mill rollers, gearboxes, industrial pumps, agricultural machinery, and other household appliances fields.

● Bearing Series

The types of the bearings include 20000CC series, 20000CCK series, 20000CC/W33 series, 20000CCK/W33 series, 20000CCK plus H series and 20000CCK/W33 plus H series.

● Production Details

◆ General steps to develop a machining process

1. Clarify the part drawings and various technical requirements, and conduct process analysis and process review of the parts based on processing.

2. Select the blank.

3. Select the positioning datum.

4. Formulate the process route of parts processing, that is, parts go through several processing stages (roughing, finishing, super-finishing, etc.), what method is used to process, what process is heat treatment arranged on, and whether the process is centralized or scattered, etc.

5. Select the machine tools used in each process.

6. Select tools, fixtures, measuring tools and other auxiliary tools for each process.

7. Determine the machining allowance of each process, and draw process diagrams for parts with more complex process requirements.

8. Determine the cutting amount.

9. Calculate time quota and fill in process documents, etc.

◆ Configure equipment properly

1. The enterprise configures main production equipment, auxiliary production equipment (including process equipment, etc.) and power equipment according to the production process and technological characteristics of bearing products, so that the performance and efficiency of various equipment are coordinated with each other, which is convenient for matching.

2. Cooperative production between enterprises can not only reduce the type and quantity of equipment of enterprises, but also facilitate the matching of equipment of various enterprises and improve the utilization rate.

3. The productivity of the equipment should be adapted to the production tasks of the enterprise to increase the workload of the equipment.

4. The type, specification, performance and processing accuracy of the equipment should be adapted to the production characteristics of the enterprise and the technological requirements of the product.

5. The equipment should be equipped with safety devices and devices for treating "three wastes".

● Basic Requirements for Rolling Bearing Steels

1. Bearing steel must have high contact fatigue strength under use.

2. In order to reduce the friction and wear of the bearing, maintain the accuracy of the bearing and prolong the service life, the bearing steel should be well wear-resistant. In the state of use, the hardness of bearing steel generally reaches 6064HRC.

3. In order to prevent the plastic deformation of the bearing under high load and the loss of accuracy, the bearing is required to have a high elastic limit.

4. The bearing steel is required to have good toughness.

5. Bearing steel should have good dimensional stability.

6. Bearing steel should be well rust-proof.

7. Bearing steel is required to have good cold and hot workability, such as plastic workability, machinability and hardenability.

● Advantages

Shaanxi Gainhui Heavy Industries Co., Ltd. was established in 2009, covering an area of 16,000 square meters and a plant area of 8,800 square meters, including production workshops, assembly workshops, packaging workshops, testing centers, finished products warehouses, raw materials warehouses, office spaces, etc. The company specializes in the production and processing of various types of precision bearings for many years, producing bearings with various precision levels of P0, P6, P5, P4 and P2.

● 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 spherical roller 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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