31300 Series	 Tapered Roller Bearing
31300 Series	 Tapered Roller Bearing
31300 Series	 Tapered Roller Bearing

31300 Series

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.

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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

about Yinin

Shanghai Yinin Bearing and Transmission Company was founded in 2009 and has over 20 years of experience in the bearing field. We are China 31300 Series Tapered Roller Bearing manufacturers and offer custom 31300 Series Tapered Roller Bearing factory. Since 1999, starting from representing bearing manufacturers in China, we have exported different kinds of bearings. Nowadays we are developing one completed sales and manufacturing bearings group.

Industry Applications

Bearings also play a very important role in agricultural machinery. They are used to support rotatin...

Bearings are widely used in automobiles. They are the key supporting and rotating parts of many movi...

Used for support, height, angle, joint, and rotating parts of medical equipment.

Used for support, rotation, motor and compressor parts of household appliances.

Used for rotation and movement of support and guide parts of automation equipment

In building structures, bearings can be used to connect different structural components.

In the production process of food and beverages, pumps are needed to transport liquids and compresso...

Bearings are used in aircraft and spacecraft engines to support rotating components such as turbines...

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