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Back to back-Paired Single Row Tapered Roller Bearings OEM/ODM

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Back to back-Paired Single Row Tapered Roller Bearings

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  • Design Variants
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Model
 Dimensions Rated load Fatigue load Extreme speed Weight Bearing dimensions Adjacent and rounded corner sizes Calculation factor
d
D
 T Dynamic load Cr Static load Cor pu Grease lubrication Oil lubrication kg c r1.2 min r5 min db max Db min Cb max ra maxe rc maxe e Y1 Y2 Yo
30308T72DB
40
90
 72 170 190 21.6 5300 8000 1.9 61.5 2 0.6 49 82 5 2 0.6 0.35 1.9 2.9 1.8
30215T70DB
75
130
 70 238 355 41.5 3000 5000 3.25 59.5 2 0.6 84 124 5 2 0.6 0.43 1.6 2.3 1.6
32215T80DB
75
130
 80 275 425 49 3000 5000 3.8 67.5 2 0.6 84 125 6 2 0.6 0.43 1.6 2.3 1.6
32216T78DB
80
140
 78 319 490 57 2800 4500 4.45 63.5 2.5 0.6 90 134 7 2 0.6 0.43 1.6 2.3 1.6
32017T66XDB
85
130
 66 238 450 51 2800 4800 2.7 52 1.5 0.6 92 125 7 1.5 0.6 0.44 1.5 2.3 1.4
33017T70DB
85
130
 70 308 620 69.5 2800 4800 3.5 56 1.5 0.6 92 125 7 1.5 0.6 0.44 1.5 2.3 1.4
30217T71DB
85
150
 71 303 440 51 2600 4300 4.1 58.5 2.5 0.6 95 141 6.5 2 0.6 0.43 1.6 2.3 1.6
31318T103DB
90
190
 103 457 630 73.5 1900 3400 12.5 70 4 1 105 179 16.5 3 1 0.83 0.81 1.2 0.8
32220T108DB
100
180
 108 539 880 96.5 2200 3600 10.5 88 3 1 112 171 10 2.5 1 0.43 1.6 2.3 1.6
32220T140DB
100
180
 140 539 880 96.5 2200 3600 12.5 120 3 1 112 171 10 2.5 1 0.43 1.6 2.3 1.6
32022T84XDB
110
170
 84 402 780 85 2200 3600 6.5 66 2.5 0.6 121 163 9 2 0.6 0.43 1.6 2.3 1.6
32024T84XDB
120
180
 84 418 830 88 2000 3400 7 66 2.5 0.6 131 173 9 2 0.6 0.46 1.5 2.2 1.4
32224T146DB
120
215
 146 792 1400 146 1800 3000 21 123 3 1 132 204 11.5 2.5 1 0.43 1.6 2.3 1.6
31324T146DB
120
260
 146 935 1400 146 1400 2400 35 134 4 1 135 244 26 3 1 0.93 0.81 1.2 0.9
30226T97.5DB
130
230
 97.5 627 980 106 1700 2800 15 70 4 1 145 217 9.5 3 1 0.43 1.6 2.3 1.6
30326T142DB
130
280
 142 1080 1600 166 1400 2400 36.5 112.5 5 1.5 150 255 14.5 4 1.5 0.35 1.9 2.9 1.8
32028T130XDB
140
210
 130 561 1160 116 1700 2800 12.7 108 2.5 0.6 152 202 11 2 0.6 0.46 1.5 2.2 1.4
30228T106DB
140
250
 106 721 1140 116 1500 2600 19.5 86.5 4 1 156 234 9.5 3 1 0.43 1.6 2.3 1.6
32228T158DB
140
250
 158 1100 2000 200 1500 2600 31 130.5 4 1 156 238 13.5 3 1 0.43 1.6 2.3 1.6
32230T167DB
150
270
 168 1250 2280 224 1400 2400 38 134 4 1 166 254 17 3 1 0.43 1.6 2.3 1.6
32230T248DB
150
270
 248 1250 2280 224 1400 2400 39.5 214 4 1 166 254 17 3 1 0.43 1.6 2.3 1.6
31330T179XDB
150
320
 179 1340 2040 200 1100 2000 58.5 115 5 1.5 170 300 32 4 1.5 0.83 0.81 1.2 0.8
32232T179DB
160
290
 179 1510 2800 265 1300 2200 52.5 145 4 1 176 274 17 3 1 0.43 1.6 2.3 1.6
32034T162XDB
170
260
 162 880 1830 180 1400 2200 30.5 134 3 1 184 249 14 2.5 1 0.44 1.5 2.3 1.6
32936T135DB
180
250
 135 605 1460 137 1400 2600 14.5 83 2.5 0.6 192 241 11 2 0.6 0.48 1.4 2.1 1.4
32036T150DB
180
280
 150 1100 2320 220 1300 2200 29.5 118 3 1 194 267 16 2.5 1 0.43 1.6 2.3 1.6
32236T196DB
180
320
 196 1720 3250 300 1100 1900 61.5 156 5 1.5 200 297 14 4 1.5 0.44 1.5 2.3 1.4
32938T102DB
190
260
 102 616 1530 143 1300 2400 15 80 2.5 0.6 202 251 11 2 0.6 0.48 1.4 2.1 1.4
32938T122DB
190
260
 122 616 1530 143 1300 2400 15.5 100 2.5 0.6 202 251 11 2 0.6 0.48 1.4 2.1 1.4
32038T146X.DB
190
290
 146 1120 2400 224 1200 2000 31.5 114 3 1 204 279 16 142 1 0.44 1.5 2.3 1.4
32038T183X.DB
190
290
 183 1120 2400 224 1200 2000 32.5 151 3 1 204 279 16 179 1 0.44 1.5 2.3 1.4
32040T154.5X.DB
200
310
 154.5 1280 2750 255 1100 1900 39.5 120.5 3 1 214 297 17 147 1 0.43 1.6 2.3 1.6
32044T165X.DB
220
340
 165 1540 3350 300 1000 1700 52 127 4 1 236 326 19 157 1 0.43 1.6 2.3 1.6
32044T165X.DB
220
340
 165 1540 3350 300 1000 1700 52 127 4 1 236 326 19 157 1 0.43 1.6 2.3 1.6
32044T168X.DB
220
340
 168 1540 3350 300 1000 1700 52 130 4 1 236 326 19 160 1 0.43 1.6 2.3 1.6
32248T284.BD
240
440
 284 3300 3550 550 800 1400 175 230 5 1.5 262 415 27 240 1.5 0.43 1.6 2.3 1.6
32052T189XDB
260
400
 189 1980 4400 380 850 1400 80.5 145 5 1.5 282 383 22 183 1.5 0.43 1.6 2.3 1.6
32052T194XDB
260
400
 194 1980 4400 380 850 1400 80.5 150 5 1.5 282 383 22 188 1.5 0.43 1.6 2.3 1.6

Ningbo DHK Precision Bearing Co., Ltd.

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    Patented Technology

Ningbo DHK Precision Bearing Co., Ltd. (“DHK” for short) is a specialist enterprise engaged in the R&D, manufacture and sales of bearings. Is a famous China Back to back-Paired Single Row Tapered Roller Bearings Factory and OEM/ODM Back to back-Paired Single Row Tapered Roller Bearings Company. And is located in Ningbo Zhenhai Economic Development Zone with convenient transportation. Since the establishment for over a decade, "technology", "quality" and "service" have always been the initial issues in our mind for the sake of development. We provide reliable products and special customized services for global enterprises in heavy industry and have got the Satisfaction and won good reputation of a number of enterprises at home and abroad.

DHK mainly produces cylindrical roller bearings, conical roller bearings, self-aligning roller bearings, ball bearings, as well as various kinds of non-standard bearings and bearings with specially treated surface. So far, DHK’s bearings have been widely applied in such fields as engineering machinery, industrial pump, machine tool, compression engine, gear case, wind power and metallurgy in developed European and American countries.

DHK has the measuring room and inspection room of bearings in the industry and has introduced top-end inspection equipment worldwide and established the QC system in China,thus guaranteeing product quality in an all-round way.

Ningbo DHK Precision Bearing Co., Ltd.

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CERTIFICATE

DHK has passed IATF16949 quality system certification and ISO14001 environmental management system certification；and DHK is a national high-tech enterprise.

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  • Environmental Managementsystem Certificate
  • Measurement Management System
  • Invention patent1
  • Invention patent2
  • Invention patent3
  • High-tech enterprises

Latest News

Industry Knowledge Expansion

1. Grease Lubrication: Optimizing Operational Efficiency
Grease lubrication stands as a cornerstone of operational efficiency in industrial applications, offering a reliable and low-maintenance solution for keeping machinery running smoothly. Back to back-paired single row tapered roller bearings harness the benefits of grease lubrication to optimize performance in extreme speed environments. Grease lubrication offers several advantages over alternative lubrication methods. Firstly, it provides excellent sealing properties, effectively preventing contaminants such as dirt, dust, and moisture from infiltrating the bearing assembly. This not only extends the lifespan of the bearings but also reduces the need for frequent maintenance and replacement, leading to significant cost savings over time.Grease lubrication helps to minimize friction and wear within the bearing assembly, ensuring consistent performance even under heavy loads and high-speed conditions. By creating a protective barrier between moving parts, grease lubrication reduces heat generation and minimizes the risk of premature failure, thus enhancing the overall reliability of the machinery. The rated grease lubrication speed of 5300 for back to back-paired single row tapered roller bearings signifies their ability to operate continuously at high speeds without compromising performance or durability. This makes them well-suited for applications such as machine tool spindles, where rapid acceleration and deceleration are common requirements. Grease lubrication offers versatility in terms of temperature range, making it suitable for use in both moderate and extreme operating conditions. With proper selection of grease type and formulation, these bearings can withstand temperatures ranging from sub-zero cold to high heat, ensuring reliable performance across a wide range of environments.

2. Oil Lubrication: Elevating Speed and Durability
Oil lubrication represents the pinnacle of lubrication technology, offering unparalleled performance in terms of speed, heat dissipation, and longevity. Back to back-paired single row tapered roller bearings leverage the benefits of oil lubrication to elevate their capabilities to new heights, making them ideal for applications where extreme speed and durability are essential. One of the primary advantages of oil lubrication is its ability to dissipate heat more effectively than grease, making it particularly well-suited for high-speed applications. By continuously circulating oil throughout the bearing assembly, heat generated during operation is quickly carried away, preventing thermal buildup and ensuring stable performance even under the most demanding conditions. The impressive oil lubrication speed of 8000 for back to back-paired single row tapered roller bearings reflects their ability to operate at exceptionally high speeds without sacrificing performance or reliability. This makes them the preferred choice for critical applications such as turbine engines, where rapid rotation speeds are essential for optimal performance. Oil lubrication offers greater flexibility in terms of viscosity selection, allowing for customization to suit specific operating conditions and performance requirements. By choosing the appropriate oil viscosity, engineers can fine-tune the lubrication system to optimize efficiency, minimize friction, and extend the lifespan of the bearings. Another key advantage of oil lubrication is its ability to flush contaminants out of the bearing assembly, preventing the buildup of debris that can lead to premature wear and failure. This helps to maintain the integrity of the bearing surfaces, ensuring smooth operation and reliable performance over the long term.