Double-Row Cylindrical Roller Bearings

Higher Axial Load Capacity:Compared to single-row designs, double-row bearings can withstand higher axial loads.
Variety of Cage Materials:
Cage materials are diversified, including steel, brass, and engineering plastics, to meet different application needs.
High Rigidity:
The double-row design increases the bearing’s rigidity, ensuring stability and precision of the equipment under high load conditions.

Product Detail

Double-row cylindrical roller bearings feature two sets of rollers, allowing them to bear higher radial loads compared to single-row bearings. These bearings have high radial rigidity, making them ideal for the main spindles of precision machine tools. The cages are typically made from pressed steel or machined brass, although some models use molded polyamide resin cages.

Structure

Parameter

Single-row bearings are designated as NU, NJ, NUP, N, or NF, depending on the use of side ribs. Double-row bearings are designated as NNU or NN. All types allow the inner ring and outer ring to be separated.

Model	Variant Structure	Model	Variant Structure
202	N NU NJ NF NUP	2209	N NU NJ NF NUP
240	N NU NJ NF NUP	2220	N NU NJ NF NUP
303	N NU NJ NF NUP	2240	N NU NJ NF NUP
330	N NU NJ NF NUP	2304	N NU NJ NF NUP
405	N NU NJ NF NUP	2310	N NU NJ NF NUP
420	N NU NJ NF NUP	2320	N NU NJ NF NUP
1004	N NU NJ NF NUP	2330	N NU NJ NF NUP
1060	N NU NJ NF NUP	2340	N NU NJ NF NUP

Application

Double-row cylindrical roller bearings, known for their high radial and axial load capacity, high rigidity, and low friction, are widely used in the steel industry, heavy machinery, motors, generators, machine tools, and turbines.