Roller bearings
Four-Row Tapered Roller Bearings
Rolling-mill duty. Four tapered rows inside one chock carry extreme radial load and locate the roll axially at the same time, so the housing needs no separate thrust bearing.
- Series
- 380000 · 800000 series
- Bore
- 120 – 1200 mm
- Class
- P5 / P4
Design
Four rows, one chock.
Every batch is measured on the finished part, and the measurement file travels with the goods. Send a designation, a drawing or a photo of the failed part and an engineer will answer with a lead time and a price, usually inside 48 hours.
- Four rows, one chockTwo double-row assemblies face each other; the whole set is matched to a measured end play.
- Case-hardened ringsRings and rollers are case-hardened so the raceway keeps its hardness through the case depth.
- Sealed or openSealed chock designs keep mill scale and cooling water out of the raceway.
- Shipped with its recordEnd play, bore and OD figures travel with the set, keyed to its serial number.
Technical data
380000 · 800000 series| Designs | Two double-row assemblies, back-to-back or face-to-face, in one chock |
|---|---|
| Bore range | 120 – 1200 mm |
| Outer diameter | 200 – 1600 mm |
| Rows | 4 |
| Accuracy | P5 / P4, with a measured end-play record per set |
| Cage | Machined brass, pin type |
| Heat treatment | Case-hardened rings and rollers |
| Lubrication | Oil circulation or grease, sealed chock on request |
Where it is used
Common applicationsRolling mills
Work-roll and backup-roll necks in hot and cold strip mills.
Calenders
Multi-roll calender stacks in rubber and plastics lines.
Heavy presses
Press frames and slide guides where radial load dominates.
Crushers
Eccentric shaft supports in jaw and cone crushers.
Send the part number.
We will send the answer.
A designation, a drawing, or a photo of the failed part is enough to start. Technical questions reach an engineer, not a mailbox.
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