Cylindrical roller bearing

double-rowsteelfor machine tools

Double-row cylindrical roller bearings are available in two types, NN and NNU, and two series, 30 and 49. The rollers in the NN type bearing are guided by the ribs of the inner ring. The rollers in the NNU type bearing are guided by the ribs of the outer ring. Bearings are available with either a tapered bore (which allows adjustment of radial internal clearance of bearing) or a standard cylindrical bore. The bearings come in two types, standard type and high-speed HS type. Standard cage is machined brass. Single-row cylindrical roller bearings are available in two types, high-speed N10HS type and ultra highspeed N10HSRT6 type. The N10HS type bearings have high-strength machined brass cages, while the N10HSR type bearings have special molded resin cages, which can be used for both grease lubrication and air-oil lubrication. The eco-friendly N10HSLT6 type is a variation from the high-speed N10HSRT6 type bearing and can be used with air-oil lubrication only.