Bearing Wholesalers
  • Address258 Bearing Wholesalers Center Hill, Singapore 628925
  • Factory Address258 Bearing Wholesalers Center Hill, Singapore 628925
  • Worktime9: 00-18: 00 (بتوقيت بكين)
  • Phone(Working Time)+6531591338
  • Phone(Nonworking Time)+6531591338
  • Fax+6531591338

Four Row Tapered Roller Bearings NTN

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Four-row tapered roller bearings are used successfully worldwide for rolling mill bearing arrangements where rolling speeds are slow to moderate. Because of their design they are able to take up those axial loads which occur in such applications in addition to radial loads and generally no separate thrust bearings are required in such arrangements. This means that the roll necks can be relatively short and the chocks at both sides of the roll can have the same design .
Four-row tapered roller bearings, because of their design, must be installed as complete bearings in the chocks. To enable quick roll changes to be made they must therefore have a loose fit on the roll necks. Loose fits have the disadvantage that the inner rings wander on their seats under the prevailing load conditions causing wear to the seats which normally have a lower hardness than the rings. To alleviate the effects of a loose fit to some extent, i.e. to reduce wear, bearings have a helical groove in the bore and/or lubrication grooves in the side faces of the inner rings . These grooves enable lubricant to be supplied to the contact surfaces of the inner ring and seat. Additionally, the grease-filled grooves can absorb the wear particles.
Produces an extensive range of four-row tapered roller bearings which covers not only the conventional designs with intermediate rings between the outer and/or inner rings , but also a new design with modified rings which integrate the intermediate rings .

Our brands include NSK, TIMKEN, KOYO, NTN, IKO and so forth.

Bearing CRO-6204

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate CRO-6204

Bearing 623068

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate 623068

Bearing 625988

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate 625988

Bearing CRO-13202

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate CRO-13202

Bearing EE171000D/171450/171451D

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate EE171000D/171450/171451D

Bearing 625976

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate 625976

Bearing LM263149D/LM263110/LM263110D

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate LM263149D/LM263110/LM263110D

Bearing CRO-7105

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate CRO-7105

Bearing CRO-3617

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate CRO-3617

Bearing M224749D/M224710/M224710D

Japan Germany USA NTN SKF FAG TIMKEN NSK KOYO
Original Cerificate M224749D/M224710/M224710D
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