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Ball Screw Support Bearings

NEWORLD Ball screw bearings are manufactured as per to the design of FAG, TIMKEN, SKF, NTN and NSK. Our products range covers axial angular contact ball bearings with single row, double row and triple row, needle roller/ axial cylindrical roller bearings, Angular contact ball bearing, ball screw support bearings with cartridge units and pillow block units.

Product Description

FAG   SKF   INA  TIMKEN   NSK   IKO   NTN

With our forward-looking bearing arrangement solutions for feed spindles, main spindles, rotary tables and linear guidance units, NEWORLD have been at the forefront of the Chinese market over a decade. In terms of products, we offer you a comprehensive, precisely balanced range, precision technology and top product quality.

 

FAG Bearings for screw drives

Types

Double row axial angular contact ball bearings

      Series ZKLF, ZKLF..-PE, ZKLF..-2AP

      Series ZKLN, ZKLN..-PE, ZKLN..-2AP, ZKLN..-DAC

♦ Single row axial angular contact ball bearings

     Series BSB, BSB..-SU, 7602, 7603

Angular contact ball bearing

     Series ZKLR, ZKLR..-2RS, ZKLR..-2Z

Double row and triple row axial angular contact ball bearings

     Series ZKLFA, DKLFA

Needle roller/ axial cylindrical roller bearings

     Series ZARF(L), DRS, ZARN(L)

Ball Screw Support BearingsBall Screw Support Bearings

Ball Screw Support Bearings

 

TIMKEN BALL SCREW SUPPORT SERIES

METRIC SERIES/ INCH SERIES

• Designed for maximum axial rigidity, low drag torque and extreme control of lateral eccentricity.

• Manufactured to ABEC 9/ISO P2 axial tolerances.

• Non-separable angular-contact type design (60 degree contact angle).

• Manufactured to ABEC 7/ISO P4 radial and envelope tolerances.

• Maximum complement of balls.

• Supplied prelubricated with heavy-duty grease NLGI #2.

• Packaged in DB arrangement [can be mounted in duplexed pairs and in multiplexed sets in either Back-to-Back (DB), Face-to-Face (DF) or Tandem (DT) arrangements].

Ball Screw Support Bearings

BALL SCREW SUPPORT BEARING CARTRIDGE UNITS

 

♦  BSBU D – STANDARD AND HEAVY-DUTY BEARINGS

• Designed and developed to give the machine manufacturer a ready-made unit providing excellent stiffness and accuracy in ball screw applications.

• Units combine the features of MM-BS-DU (Duplex) ball screw support bearings with an accurately manufactured housing and laminar ring seals.

• Each unit is prepacked with a measured quantity of high quality bearing grease and requires no further lubrication.

• Units are supplied with the bearings in pairs mounted in the “DB” (“O”) arrangement.

• Other bearing arrangements can be accommodated if required.

• For load and speed ratings, refer to bearing data on page 203.

 

♦  BSBU Q – STANDARD AND HEAVY-DUTY BEARINGS

• Similar in design and features to the series BSBU D except MM-BS-QU Quadruplex bearings are used.

• Units are supplied with the bearings in quad sets mounted in the "DB" ("O") arrangement.

Ball Screw Support Bearings

BALL SCREW SUPPORT BEARING PILLOW BLOCK UNITS

♦  BSPB D – STANDARD AND HEAVY-DUTY BEARINGS

• Designed for ball screw applications.

• Incorporates similar features to the series BSBU D but is designed to bolt down onto a flat surface, parallel to the ball screw axis.

• In the standard unit, pilot holes for dowels are provided.

• Units are supplied with the bearings in duplex sets mounted in the "DB" ("O") arrangement.

• Units with fi nished holes for dowels can be supplied by special order if required.

 

♦  BSPB Q – STANDARD AND HEAVY-DUTY BEARINGS

• Similar in design and features to the Series BSPB D, except MM-BS-QU Quadruplex bearings are used.

• Units are supplied with the bearings in quad sets mounted in the "DB" ("O") arrangement.

Ball Screw Support Bearings

BALL SCREW SUPPORT BEARINGS

SEALED, DOUBLE-ROW FLANGED STYLE

MMF SERIES

• Specifi cally designed for ball screw applications.

• Integral double-row design supports axial and combined loads.

• Nominal contact angle 60 degrees for superior axial rigidity and accuracy.

• Low torque, integral contact seals.

• Easy and fl exible installation without external clamping.

• Sealed duplex confi guration standard with optional seals, shields, ceramic balls and quadruplex sets available.

 

BALL SCREW SUPPORT BEARINGS

SEALED, DOUBLE-ROW CARTRIDGE STYLE

MMN SERIES

• Specifi cally designed for ball screw applications.

• Integral double-row design supports axial and combined loads.

• Nominal contact angle 60 degrees for superior axial rigidity and accuracy.

• Low torque, integral contact seals.

• Easy and fl exible installation for both fi xed and rotating nut designs.

• Sealed duplex confi guration standard with optional seals, shields, ceramic balls and quadruplex sets available.

Ball Screw Support Bearings

 

SKF Angular contact thrust ball bearings for screw drives

SKF supplies three types of support bearings:

• single direction bearings

• double direction bearings

• cartridge units with a flanged housing

Ball Screw Support BearingsBall Screw Support Bearings

The units are available with different bearing arrangements ( fig. 5):

• two bearings arranged back-to-back, designation suffix DB

• two bearings arranged face-to-face, designation suffix DF

• two bearing pairs arranged tandem backto-back, designation suffix QBC

• two bearing pairs arranged tandem face-toface, designation suffix QFC

Ball Screw Support BearingsBall Screw Support Bearings

Application examples

Screw drives are typically supported at both ends with bearing sets in a back-to-back or face-to-face arrangement (fig. 13). With universally matchable single direction bearings, it is possible to adjust the arrangement to the requirements of a particular application.

Sealed bearings ( fig. 14) offer additional benefits. There are fewer components to install, the bearing is protected against contaminants, and no lubricant is required during mounting.

For short screw drives, an overhung support at one end is common ( fig. 15). Back-to-back arrangements are best suited for overhung supports.

Double direction bearings (fig. 16) can further reduce the number of components. Bearings that are bolt mounted ( fig. 17) do not require a housing and can be mounted easily.

For stretched screw drives, particularly stiff bearing arrangements can be designed if tandem arrangements, adjusted against each other, are used at both ends. Cartridge units with a flanged housing are particularly well suited for these screw drive designs. ( fig. 18)

Ball Screw Support BearingsBall Screw Support Bearings

Ball Screw Support BearingsBall Screw Support BearingsBall Screw Support Bearings

NTN Ball Screw Support Bearings

Types:

♦ Angular contact thrust ball bearings 2A-BST series

♦ Duplex angular contact ball bearings HT series

♦ Needle roller bearings with double-row thrust needle roller bearings AXN series

♦ Needle roller bearings with double-row thrust cylindrical roller bearings ARN series

Ball Screw Support BearingsBall Screw Support BearingsBall Screw Support Bearings

NTN ball screw bearings are optimized to support a ball screw.

These bearings are categorized as shown in Table 13.1.

Ball Screw Support Bearings

Application :

The BST type is mainly installed on ball screws of machine tool feed systems, and two to four row arrangements are used in many cases. This type is popular because greased sealed angular contact ball bearings are easy to handle.

The back-to-back duplex arrangement is commonly used because it allows acquisition of the specified preload by tightening the inner ring.

The face-to-face duplex arrangement may be used if more precise alignment is required. It is not commonly used for machine tools.

Examples of bearing arrangement are shown in Figs. 13.16 and 13.17.

Ball Screw Support BearingsBall Screw Support Bearings

Contact Us

Email: Alice@neworld-cnctools.com

Email: Jane@neworld-cnctools.com

Mob.: +86 136 5143 1763

WeChat: +86 136 5143 1763

Skype: +86 136 5143 1763

Whatsapp: +86 136 5143 1763

Add.: No.1, Qianwan Road 1, Qianhai Shenzhen-Hongkong Cooperation Zone,Shenzhen, China.

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