Product Description

Bearing Design

Standard cylindrical roller bearings feature a tapered bore (taper 1:12) for precise adjustment of the radial clearance. Thus the desired radial clearance or radial preload can be adjusted by axial displacement on the tapered shaft. Hybrid cylindrical roller bearings with rollers from ceramic material have been newly included in the product range.

Thanks to the use of ceramic rollers, they offer significantly improved characteristics in terms of bearing friction and wear.

This reduces the demand on the lubricant and leads to lower temperatures.

Consequently, higher speeds are permissible and the service life is extended to a significant degree. Furthermore, ceramic

rollers lead to increased static and dynamic rigidity and their lower thermal expansion coefficient defuses an increase in preload at elevated temperatures.

In the case of oil lubrication, attention has to be paid to their lower oil requirement in comparison with angular contact ball bearings.

The oil circuits have to be kept separate if these two bearing types are mounted side by side. Excess lubrication due to oil flow from the angular contact ball bearings has to be avoided as a sharp increase in bearing temperatures is to be expectedotherwise.

The bearings comprise solid outer rings without ribs, solid inner rings with three ribs and cylindrical roller and cage assemblies with solid brass cages. For optimum setting of the radial internal clearance, the inner ring has a tapered bore with a taper of 1:12. The cylindrical roller bearings can be dismantled and are therefore easier to fit and remove. Both bearing rings can therefore have an interference fit.

super precision cylindrical roller bearings are characterized by:

high speed capability

high radial load carrying capacity

high rigidity

low friction

low cross-sectional height

ABOUT US

Luoyang De Run Precision Machine Tool Bearings Co., Ltd. (DRZ), is a professional company in developmentand produce all kinds of precision machine tools bearings, apply for precisionmachine tool and precision transmission parts. 

Our company developed'machine tool spindle with precision double row cylindrical rollerbearings series' identified by the Henan provincial science and technologydepartment as a high-tech products, Our company have been identified ashigh-tech enterprises.Luoyang De Runprecision Machine Tool Bearings Co., Ltd. (DRZ), build in 2001 . DRZ andLuoyang Bearing Research Institute(ZYS) has establish close cooperativerelationship, DRZ Luoyang Bearing Research Institute(ZYS)’s precision bearingsproduction base factory. Henan province science and Technology Departmentidentified as high and new technology products. Registered capital of thecompany of 120 million Yuan, capital assets more than 300 million Yuan, coversan area of 18000 square meters, construction area more than 8500 square meters,DRZ own more than 200 sets of precision bearings processing equipment andtesting equipment ,with  group of highquality production and development of human resources, with strong ability todevelop new high tech products, has  developed precision cylindrical roller bearings high precision high speed angular contact  bearings  double direction angular contact thrust ball bearings Ball Screw Support Bearings tapered roller bearings 6 major series precision machine tool spindle bearings more than 280 varieties .

Our company  located in Luoyang high tech Development ZoneHua Xia Road, Transportation is convenient with beautiful environment. Thecompany take the customer as the focus ,has established a perfect qualityassurance system, which has passed the ISO9001:2000 international qualitysystem certification in 2002. The company  have advanced processing equipment and testingequipment, establish and improve the strictly quality assessment rules andregulations. Annual production of various types of bearings about 2000000 PCS ,the gross annual value about 50000000 Yuan. Products sold in all the provincesand cities in china, applied for all kinds of precision machine tools, latheCNC, CCNC machine tools, precision machinery, automotive, spindles,constructionmachinery, transport machinery, agricultural machinery enterprises. DRZ hasbecome a shining pearl among the bearing industry.'Sincere andpragmatic, pioneering and innovative' is the soul of the company'sbusiness, 'customer first, reputation first, service first' is thecompany's business objectives. 

Company with a unique management ways as aleader, to promote the efficient operation of the enterprises, with a uniquesystem, the implementation of the intensity, reach new level of management. DRZbases on 'Human-oriented ', To promote Unity, integrity,dedication as team spirit. to focus on customers  , respect customers, sincere service, sincerefriends with customer.DRZ bearingsstrictly follow the ISO9001: 2000 quality management system standard toestablish a complete set of quality management system, integrate with theinternational practice of working mechanism. DRZ bearings steps to greaterinternational market established good foundation. Let us stride forward thehopeful and challenge future together hand in hand,Share together oncoming infinite scenery.