Full Complement Cylindrical Roller Bearings

Full-complement cylindrical roller bearings are available as single-row NCF designs and double-row NNCF designs. Both designs use raceways filled with rollers and no cage, maximizing the number of rolling elements and radial load capacity.

NCF bearings provide a compact single-row locating solution, while NNCF bearings use two roller rows for higher radial capacity and rigidity. Open single- and double-row designs are used in general low-speed heavy-duty machinery; closed double-row designs are commonly used in crane sheaves.

Full-Complement Load Capacity

Without a cage occupying raceway space, the bearing accommodates more cylindrical rollers than a comparable caged design, providing increased radial load capacity for compact heavy-duty installations.

• Maximum roller complement
• High radial load capacity
• Compact load-carrying arrangement
• Suitable for heavy-load duty

Cageless Design, Speed and Lubrication

Because adjacent rollers guide and space one another, relative sliding occurs between roller surfaces. Friction and heat generation are therefore higher than in caged bearings, so NCF and NNCF bearings are primarily used at low speeds under heavy loads.

• Optimized for low-speed operation
• Designed for heavy radial loads
• Requires appropriate lubrication and thermal control

NCF and NNCF bearings provide high static and dynamic radial load capacity in a compact envelope. Reliable operation depends on suitable operating clearance, adequate lubrication and control of speed and temperature because roller-to-roller contact increases friction.

Catalog bore range : 150-1000 mm

Typical Applications

• General low-speed heavy-duty machinery
• Industrial gearboxes and transmissions
• Heavy-duty support rollers
• Presses and forming equipment
• Construction and material-handling machinery
• Crane sheaves and lifting equipment