Product Detail

Angular contact thrust ball bearings for precision ball screws have been designed specifically for each application. Lineup includes both a highly rigid series and high capacity series.

Application:

Used in high precision, high-speed precision machine tools.

Precision measuring instruments and precision feed actuators such as robots.

All ball screw support bearings are nonseparable angular contact bearings and have cutaway shoulders on both the inner and outer rings.

They can support very high thrust loads in one direction or combinations of radial and thrust loads, but not radial loading alone. These bearings are designed to provide machine tool drive systems with extreme axial rigidity, low drag torque and minimal axial runout. They are intended for specific applications in machine tools, e.g., ball screw supports, cross slides, X Y table positioners and transfer tables. They should not be used in place of standard angular contact spindle bearings.

BS Series bearings have a molded nylon, glass fiber reinforced polyamide cage with spherical ball pockets.

Inch Series, L bearings, have a landpiloted cage of reinforced phenolic, precision machined, with evenly spaced ball pockets.

All metric (BS, 7602, 7603 Series) ball screw support bearings come with the molded nylon cage, standard. Series L bearings are equipped with the phenolic cage, standard.

Bearing pairs and sets are matchmarked on their outside diameter surfaces to indicate correct positioning of each bearing. Barden packaging also contains detailed instructions for proper installation.

Recommendations for shaft and housing shoulder diameters are based on maximum support of duplexmountedbearings as found in the product tables. In circumstances with other mounting arrangements, consult Barden Product Engineering.

Most ball screw support bearing applications are subject to duty cycle loading with constantly changing feeds, speeds and operating loads. These factors, in combination with the heavy preloads built into the bearings, make life calculationsdifficult. Consult Barden Product Engineering for information which can be used in specific cases.

Ball screw support bearings (rings and balls) are made from 52100 steel. Bearings are also available with X lifeultra rings and ceramic (silicon nitride) balls for even greater speeds and longer life.

Ball screw support bearings are available as singles, standard duplex pairs or quadruplex sets. In addition, wewill supply custom combination sets to meet specialized application needs.

Ballscrew bearings could be designed into sets of two, three, four or various other combinations in order to meet a ballscrews loading requirements. Ballscrew bearings can be arranged into either a face to face or a backto back duplex bearing. These types of ball bearings can handle the loading force from both the axial and radial directions, and byincreasing the number of ball bearing sets will improve their loading capacity.

For a back to back configuration, there is a large distance between the acting load center of the bearings resulting in a higher moment load capacity. Therefore, this kind of bearing arrangement is commonly used in machine center spindles. Although the moment load capacity for a face to face configuration is smaller, it has an advantage of having a larger misalignment angle.

DRZ ballscrew bearings have a contact angle of 60°. This type of bearing can handle

larger axial loads when compared to the normal type. It is specially designed to be used

in ballscrew assembly. Since the axial load capacity is high, this also provides a high axial

stiffness . This could prevent the ballscrew from shifting when loaded . The functionality of ballscrew bearings is to help the ballscrew reach it's best accuracy .

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.