31300 series tapered roller bearings are rolling bearings with high load-bearing capacity and excellent wear resistance, and are widely used in various industrial equipment and machinery. This series of bearings adopts a tapered roller design and can withstand radial and axial loads. It is suitable for use in high-load and high-speed operation environments. Its structural features include tapered contact surfaces on the inner and outer rings, ensuring a precise fit between rollers and raceways, thereby reducing friction and heat generation. The material of the 31300 series bearings is usually high-quality alloy steel that is heat treated to enhance hardness and durability. In addition, this bearing also has good self-aligning capabilities, which can compensate for deviations caused by improper installation or shaft bending, extending its service life. Common application areas include the automotive industry, mining machinery, metallurgical equipment, and aerospace.
Product parameters
Designation | Principal dimensions(mm) | Basic load ratings(KN) | Pu | Speed ratings(rpm) | Weight(Kg) | ISO335 | Dimensions (mm) | Abutment and fillet dimensions (mm) | Value | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
d1 | D | B | dyc(Cr) | stc(Cor) | Speed Ratings | Limiting Speed | Dimensions (ABMA) | d | d1~ | B | C | r1,2(min) | r3,4(min) | a | da(max) | db(min) | Da(min) | Da(max) | Db(min) | Ca(min) | Cb(min) | ra(max) | rb(max) | e | Y | Yo | |||
31305J2 | 25 | 62 | 18,25 | 38 | 40 | 4,4 | 7500 | 11000 | 0,26 | 7FB | 25 | 45,8 | 17 | 13 | 1,5 | 1,5 | 20 | 34 | 32 | 47 | 55 | 59 | 3 | 5 | 1,5 | 1,5 | 0,83 | 0,72 | 0,4 |
31306J2/Q | 30 | 72 | 20,75 | 55 | 50 | 5,7 | 7500 | 9500 | 0,39 | 7FB | 30 | 52,7 | 19 | 14 | 1,5 | 1,5 | 22 | 40 | 37 | 55 | 65 | 68 | 3 | 6,5 | 1,5 | 1,5 | 0,83 | 0,72 | 0,4 |
31307J2/Q | 35 | 80 | 22,75 | 71 | 67 | 7,8 | 6300 | 8500 | 0,52 | 7FB | 35 | 59,6 | 21 | 15 | 2 | 1,5 | 25 | 45 | 44 | 62 | 71 | 76 | 3 | 7,5 | 2 | 1,5 | 0,83 | 0,72 | 0,4 |
31308J2/QCL7C | 40 | 90 | 25,25 | 85 | 81,5 | 9,5 | 5600 | 7500 | 0,72 | 7FB | 40 | 67,1 | 23 | 17 | 2 | 1,5 | 28 | 51 | 49 | 71 | 81 | 86 | 3 | 8 | 2 | 1,5 | 0,83 | 0,72 | 0,4 |
31309J2/QCL7C | 45 | 100 | 27,25 | 106 | 102 | 12,5 | 5000 | 6700 | 0,95 | 7FB | 45 | 74,7 | 25 | 18 | 2 | 1,5 | 31 | 57 | 53 | 79 | 91 | 95 | 4 | 9 | 2 | 1,5 | 0,83 | 0,72 | 0,4 |
31310J2/QCL7C | 50 | 110 | 29,25 | 122 | 120 | 14,3 | 4500 | 6000 | 1,20 | 7FB | 50 | 81,5 | 27 | 19 | 2,5 | 2 | 34 | 62 | 60 | 87 | 100 | 104 | 4 | 10 | 2 | 2 | 0,83 | 0,72 | 0,4 |
31311J2/QCL7C | 55 | 120 | 31,5 | 140 | 137 | 16,6 | 4300 | 5600 | 1,55 | 7FB | 55 | 88,4 | 29 | 21 | 2,5 | 2 | 37 | 68 | 65 | 94 | 112 | 113 | 4 | 10,5 | 2 | 2 | 0,83 | 0,72 | 0,4 |
31312J2/QCL7C | 60 | 130 | 33,5 | 166 | 166 | 20,4 | 3800 | 5300 | 1,90 | 7FB | 60 | 95,9 | 31 | 22 | 3 | 2,5 | 39 | 74 | 72 | 103 | 118 | 123 | 5 | 11,5 | 2,5 | 2 | 0,83 | 0,72 | 0,4 |
31313J2/QCL7C | 65 | 140 | 36 | 190 | 193 | 23,6 | 3600 | 4800 | 2,35 | 7GB | 65 | 103 | 33 | 23 | 3 | 2,5 | 42 | 80 | 77 | 111 | 128 | 132 | 5 | 13 | 2,5 | 2 | 0,83 | 0,72 | 0,4 |
31314J2/QCL7C | 70 | 150 | 38 | 216 | 220 | 27 | 3400 | 4500 | 2,95 | 7GB | 70 | 110 | 35 | 25 | 3 | 2,5 | 45 | 85 | 82 | 118 | 138 | 141 | 5 | 13 | 2,5 | 2 | 0,83 | 0,72 | 0,4 |
31315J2/QCL7C | 75 | 160 | 40 | 240 | 245 | 29 | 3200 | 4300 | 3,50 | 7GB | 75 | 116 | 37 | 26 | 3 | 2,5 | 48 | 91 | 87 | 127 | 148 | 151 | 6 | 14 | 2,5 | 2 | 0,83 | 0,72 | 0,4 |
31316J1/QCL7C | 80 | 170 | 42,5 | 260 | 265 | 32 | 3000 | 4000 | 4,05 | 7GB | 80 | 124 | 39 | 27 | 3 | 2,5 | 52 | 97 | 92 | 134 | 158 | 159 | 6 | 15,5 | 2,5 | 2 | 0,83 | 0,72 | 0,4 |
31317J2 | 85 | 180 | 44,5 | 242 | 285 | 33,5 | 2600 | 3800 | 4,60 | 7GB | 85 | 131 | 41 | 28 | 4 | 3 | 55 | 103 | 99 | 143 | 166 | 169 | 6 | 16,5 | 3 | 2,5 | 0,83 | 0,72 | 0,4 |
31318J2 | 90 | 190 | 46,5 | 264 | 315 | 36,5 | 2400 | 3400 | 5,90 | 7GB | 90 | 138 | 43 | 30 | 4 | 3 | 57 | 109 | 105 | 151 | 176 | 179 | 5 | 16,5 | 3 | 2,5 | 0,83 | 0,72 | 0,4 |
31319J2 | 95 | 200 | 49,5 | 292 | 355 | 39 | 2400 | 3400 | 6,95 | 7GB | 95 | 145 | 45 | 32 | 4 | 3 | 60 | 114 | 110 | 157 | 186 | 187 | 5 | 17,5 | 3 | 2,5 | 0,83 | 0,72 | 0,4 |
31320XJ2/CL7CVQ051 | 100 | 215 | 56,5 | 430 | 465 | 51 | 2400 | 3000 | 8,60 | 7GB | 100 | 158 | 51 | 35 | 4 | 3 | 65 | 121 | 115 | 168 | 201 | 202 | 7 | 21,5 | 3 | 2,5 | 0,83 | 0,72 | 0,4 |
31322XJ2 | 110 | 240 | 63 | 457 | 585 | 62 | 1900 | 2800 | 12,0 | 7GB | 110 | 176 | 57 | 38 | 4 | 3 | 72 | 135 | 125 | 188 | 226 | 224 | 7 | 25 | 3 | 2,5 | 0,83 | 0,72 | 0,4 |
31324XJ2 | 120 | 260 | 68 | 539 | 695 | 73,5 | 1700 | 2400 | 15,5 | 7GB | 120 | 190 | 62 | 42 | 4 | 3 | 78 | 145 | 135 | 203 | 245 | 244 | 9 | 26 | 3 | 2,5 | 0,83 | 0,72 | 0,4 |
31326XJ2 | 130 | 280 | 72 | 605 | 780 | 81,5 | 1600 | 2400 | 18,5 | 7GB | 130 | 204 | 66 | 44 | 5 | 4 | 84 | 157 | 150 | 218 | 263 | 261 | 8 | 28 | 4 | 3 | 0,83 | 0,72 | 0,4 |
31328XJ2 | 140 | 300 | 77 | 693 | 900 | 88 | 1500 | 2200 | 24,5 | 7GB | 140 | 219 | 70 | 47 | 5 | 4 | 90 | 169 | 160 | 235 | 283 | 280 | 9 | 30 | 4 | 3 | 0,83 | 0,72 | 0,4 |
31330XJ2 | 150 | 320 | 82 | 781 | 1020 | 100 | 1400 | 2000 | 29,5 | 7GB | 150 | 234 | 75 | 50 | 5 | 4 | 96 | 181 | 170 | 251 | 303 | 300 | 9 | 32 | 4 | 3 | 0,83 | 0,72 | 0,4 |
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