Rolling Mill Bearings
Four-Row Tapered Roller Bearing
Four-row tapered roller bearings for rolling mill applications — combined radial and axial load support for work roll and backup roll chock assemblies. Interchangeable with major brand equivalents. Factory direct from ANDE.
Technical Overview
Four-Row Tapered Roller Bearings combine the heavy radial load capacity of a four-row design with the ability to support significant axial thrust loads in both directions. The tapered roller geometry creates line contact for high load capacity while the four-row arrangement distributes the load across multiple rows for maximum bearing life. These bearings are essential components in rolling mill work roll and backup roll bearing chock assemblies where both radial and axial forces are present. ANDE four-row tapered roller bearings are manufactured to exacting standards with precision-ground tapered raceways, heat-treated rollers, and robust cage assemblies designed for the continuous high-load operation typical in hot and cold steel rolling mills. Our four-row tapered roller bearings serve as the primary roll neck support in main mill stands, handling the combined forces generated during hot strip rolling, cold rolling, and plate rolling operations. We provide interchangeable size and performance benchmarking solutions that can directly replace equivalent bearings from major international manufacturers. All trademarks mentioned belong to their respective owners.
Key Features
Technical Specifications
Why use four-row tapered roller bearings for combined radial and axial load rolling?
Four-row tapered roller bearings are selected when a mill stand must carry heavy radial rolling forces together with significant axial thrust and positional control. They are commonly specified for cold strip, plate, and other stands where integrated combined-load support simplifies the bearing arrangement.
Material and inspection focus
- Through-hardened or case-hardened route matched to bearing size and operating duty
- Axial setting, preload or clearance target, and contact pattern reviewed during engineering selection
- Dimensional tolerance, hardness, and final assembly inspection documented before dispatch
Replacement review note
Cross-reference work should confirm arrangement style, effective spread, load zone, and thermal setting before approving any brand replacement.
Applications
Frequently Asked Questions
Q1When should I choose a four-row tapered roller bearing over a cylindrical roller bearing?
Choose four-row tapered roller bearings when the roll position experiences significant combined radial and axial loads. Unlike cylindrical roller bearings which handle only radial loads, tapered roller bearings carry both load types simultaneously, eliminating the need for separate thrust bearings. This is common in heavy-duty hot strip mills, aluminum foil mills, and high-precision cold rolling mills.
Q2What is the advantage of adjustable internal clearance in four-row tapered roller bearings?
Adjustable clearance allows you to optimize the bearing setting for your specific operating conditions. During installation, clearance can be set to compensate for thermal expansion of the roll neck, housing tolerances, and expected load conditions. This ensures optimal load distribution across all four rows and maximizes bearing service life.
Q3What precision classes are available for ANDE four-row tapered roller bearings?
ANDE offers four-row tapered roller bearings in P5 (standard) and P4 (high precision) classes. P5 is suitable for most hot rolling applications, while P4 is recommended for high-precision cold rolling mills and aluminum foil mills where tighter strip thickness tolerances are required.
Q4Can ANDE supply four-row tapered roller bearings for non-ferrous rolling mills?
Yes. Our four-row tapered roller bearings are widely used in aluminum, copper, and other non-ferrous metal rolling mills. We offer specific configurations optimized for the lighter loads but higher precision requirements typical of non-ferrous rolling, including P4 precision class and special clearance settings.
Related Products
Backing Bearing
Specialized multi-row bearings for Sendzimir cluster mills and other multi-roll cold rolling mill configurations.
Four-Row Cylindrical Roller Bearing
Four-row cylindrical roller bearings for rolling mill work rolls and backup rolls — maximum radial load capacity for hot strip mills, plate mills, and section mills. Factory direct from ANDE bearing manufacturer.