Four-row cylindrical roller bearings are used almost exclusively for the roll necks of rolling mill stands, calenders and roller presses. Because they are normally mounted with an interference fit on the roll neck, four-row cylindrical roller bearings are well suited for rolling mill applications where the rolling speed is high.Because four-row cylindrical roller bearings can accommodate only radial loads, they are mounted together with deep groove or angular contact ball bearings, or with tapered roller bearings (either radial or thrust design) which accommodate the axial loads.
- Exceptional high load carrying capacity
Because of their high number of rollers, four-row cylindrical roller bearings are suitable for very heavy radial loads.
- Low friction (Roller end / flange contact area)
The open flange design, together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction.
- Long service life
The logarithmic roller profile reduces edge stresses at the roller/raceway contact and sensitivity to misalignment and shaft deflection.
- Enhanced operational reliability
The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film.
- High speed capability
The cage designs are suitable for high speeds, rapid accelerations and peak loads.
- Low cross-sectional height
The low cross-sectional height of four-row cylindrical roller bearings allows for relatively large roll neck diameters compared to the roll diameter.
Single row cylindrical roller bearings are available in many designs, series and sizes.
Double row cylindrical roller bearings are available in several designs with a cylindrical or tapered bore.
Four-row cylindrical roller bearings are used almost exclusively for the roll necks of rolling mill stands, calenders and roller presses.
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Single row angular contact ball bearings can accommodate axial loads in one direction only.
The design of the double row angular contact ball bearings corresponds to two single row angular contact ball bearings arranged back-to-back.
Four-point contact ball bearings are radial single row angular contact ball bearings with raceways that are designed to support axial loads in both directions.
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Single row tapered roller bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.
The assortment of matched single row tapered roller bearings is based on popular sizes of single row tapered roller bearings.
Double row tapered roller bearings can accommodate heavy radial loads, axial loads in both directions and have a high degree of stiffness.
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Cylindrical roller thrust bearings are designed to accommodate heavy axial loads and impact loads.
Needle roller thrust bearings are fitted with a form-stable cage to reliably retain and guide a large number of needle rollers.
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Pillow block bearing units consist of an insert bearing mounted in a housing, which can be bolted to a support surface.
Flanged bearing units consist of an insert bearing mounted in a housing, which can be bolted to a machine wall or frame.
The take-up bearing unit assortment comprises of insert bearing series and designs, with the main differences between the take-up units being the housing design, the locking method onto the shaft, the sealing solution, and the options for end covers and back seals.
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