Four-row cylindrical roller bearings
- SKF–roll neck bearings four row cylindrical roller bearings are available in a variety of designs.
- With cylindrical or tapered bore
- open or sealed
- Four-row cylindrical roller bearings are used almost exclusively for the roll necks of rolling mill stands, calenders and roller presses.
- Because they are usually mounted on the roll neck with an interference fit, four row cylindrical roller bearings are well suited for rolling mill applications with high rolling speeds.
- Because four-row cylindrical roller bearings can only accommodate radial loads, they are mounted with deep groove or angular contact ball bearings or tapered roller bearings (radial or thrust design) to accommodate axial loads.
Features and Benefits
- large bearing–high carrying capacity（roll neck bearings）
Due to the existence of the second row of rollers, double row cylindrical roller bearings are suitable for heavy radial loads. - Low friction (roller end/flange contact area)
The open flange design, combined with the roller end design and surface treatment, promotes the formation of a lubricating oil film, which reduces friction and increases axial load capacity. - long lasting–large bearing
Logarithmic roller profiles reduce edge stress at the roller/track contact and susceptibility to misalignment and shaft misalignment. - Enhanced operational reliability
The surface finish of the roller and raceway contact surfaces contributes to the formation of a hydrodynamic lubricating film. - separable and interchangeable
The separable parts of SKF double row cylindrical roller bearings are interchangeable. This facilitates installation and removal, as well as（roll neck bearings） maintenance inspections. - high speed capability–roll neck bearings
The cage is designed for high speeds, rapid accelerations and peak loads.
Applications
The following are examples of applications where Four-row cylindrical roller bearings （roll neck bearings）may be used.
material handling
Industrial Transmission
mechanical tool
Trucks, Trailers and Buses
FAQ
Loads are defined by their direction. Loads perpendicular to the shaft are called radial loads and loads parallel to the shaft are called axial (thrust) loads.
Successful mounting is critical to the life cycle of your bearing. Proper bearing dismounting can safeguard other machine components and maintenance workers.
- The bearing is at the heart of all rotating equipment, and the condition of the bearing often reflects how well a machine is running.
- Learn more about bearing damage and bearing failure – and how to prevent it.
Sure, free samples are available for stock products if you can pay for the shipping cost.
We have regular stock for standard bearings that can be shipped right after your payment. It will take 15-60 days for new production order,which depends on your order quantity.
- All our bearings are 100% inspected strictly before packing.
- If any defective products received, please provide photos and video to show us the problem and help us improve the quality.
- New products will be sent to you as replacement if the probelm is product quality.
