Bearing No. Boundary dimensions Basic load rating(kN) Limiting speeds Mass mm Dynamic Static rpm Kg d D B rs min rs1 min Cr Cor Grease Oil ≈ N308 40 90 23 1.5 1.5 58.5 57 8,000 9,400 0.643 N309 45 100 25 1.5 1.5 74 71 7,200 8,400 0.857 N310 50 110 27 2 2 87 86 6,500 7,700 1.11 N311 55 120 29 2 2 111 111 5,900 7,000 1.42 N312 60 130 31 2.1 2.1 124 126 5,500 6,500 1.76 N313 65 140 33 2.1 2.1 135 139 5,100 6,000 2.18 N314 70 150 35 2.1 2.1 158 168 4,700 5,500 2.65 N315 75 160 37 2.1 2.1 190 205 4,400 5,200 3.21 N316 80 170 39 2.1 2.1 190 207 4,100 4,800 3.77 N317 85 180 41 3 3 212 228 3,900 4,600 4.44 N318 90 190 43 3 3 240 265 3,700 4,300 5.18 N319 95 200 45 3 3 259 285 3,400 4,000 5.99 N320 100 215 47 3 3 299 335 3,300 3,800 7.32 N321 105 225 49 3 3 320 360 3,100 3,700 8.33 Cylindrical roller bearing are in many designs,dimension series and sizes.Bearings with a cage can accomodate heavy radial loads and operate at high speeds.Full complement bearings are suitable for very heavy radial loads at moderate speeds.This type of bearings is separable.As their rollers lineary come into contact with inner ring and outer ring with less coefficient of friction,these bearings have very good capacity of radial load,suitable for electric motors,automobiles,transmission shafts,gear shafts and so on.Double row cylindrical roller bearings are good at the spindles of machine tools.
