JOJI single-row cylindrical roller bearings are available in various designs, series, and sizes. The main design differences between the bearings presented in this section are:

Cage design and material

Construction of inner and outer ring ribs

JOJI high-load cylindrical roller bearings combine the high load capacity of full complement bearings with the high-speed capabilities of caged bearings. They are designed for applications such as industrial gearboxes, wind turbine gearboxes, and mining equipment.

JOJI double-row cylindrical roller bearings are available in various designs with cylindrical or tapered bores. JOJI standard products offered in this section include:

• NNU bearings
• NN bearings
• NNUP bearings

SKF four-row cylindrical roller bearings are available in a variety of designs.

• With a cylindrical or tapered bore
• Open or sealed

Four-row cylindrical roller bearings are almost exclusively used on the roll necks of rolling mills, calenders, and roller presses. Because these bearings are typically mounted on the roll necks with an interference fit, four-row cylindrical roller bearings are particularly well-suited for rolling mill applications with high rolling speeds.
Because four-row cylindrical roller bearings can only carry radial loads, they are mounted in conjunction with deep groove or angular contact ball bearings, or with tapered roller bearings (radial or thrust designs) to carry axial loads.

JOJI single-row full complement cylindrical roller bearings contain the largest number of rollers because they are not equipped with a cage.
Basic JOJI products available here include:

• NCF type bearings
• NJG type bearings

JOJI double-row full complement cylindrical roller bearings contain the largest number of rollers because they do not have a cage.
The basic JOJI product offerings here include:
Open bearings in three different designs:

• NNCL type
• NNCF type
• NNC type
• NNF type sealed bearings