As a professional bearing manufacturer in China, we understand that customers purchasing industrial bearings care most about stability, service life, precision, and long-term operating costs. At BMT Bearings, we have spent years improving our production process and quality control system to ensure every Double Row Tapered Roller Bearing delivers dependable performance under demanding working conditions.
Our bearings are widely used in automotive systems, gearboxes, rolling mills, mining equipment, construction machinery, agricultural machinery, heavy-duty transmissions, and industrial drive systems where high radial and axial loads must be handled simultaneously.

| Bearing Model | Dimensions (mm) | Basic Load Ratings (kN) | Limiting Speed (rpm) | Weight | Type & Features | |||||
| d | D | B | T | Cr | Cor | Grease | Oil | (kg) | ||
| TDO (Two-Row Double Outer Ring) Type | ||||||||||
| 478/472 | 76.2 | 161.925 | 49.212 | 82.931 | 365 | 530 | 2000 | 2800 | 6.8 | TDO, Requires spacer |
| 478/472A | 76.2 | 161.925 | 49.212 | 82.931 | 365 | 530 | 2000 | 2800 | 6.8 | TDO, Requires spacer |
| 486/472 | 109.538 | 166.688 | 53.975 | 95.25 | 405 | 610 | 1800 | 2600 | 8.2 | TDO, Requires spacer |
| 522/560X | 132.538 | 197.644 | 57.15 | 104.775 | 550 | 850 | 1600 | 2200 | 12.5 | TDO, Requires spacer |
| 531/532 | 139.992 | 233.375 | 60.325 | 123.825 | 670 | 1080 | 1400 | 1900 | 17.5 | TDO, Requires spacer |
| TNA (Two-Row Double Inner Ring) Type | ||||||||||
| 447/432 | 76.2 | 161.925 | 49.212 | 82.931 | 365 | 530 | 2000 | 2800 | 6.8 | TNA, Requires spacer |
| 447/432A | 76.2 | 161.925 | 49.212 | 82.931 | 365 | 530 | 2000 | 2800 | 6.8 | TNA, Requires spacer |
| 455/432 | 109.538 | 166.688 | 53.975 | 95.25 | 405 | 610 | 1800 | 2600 | 8.2 | TNA, Requires spacer |
| TS (Two-Row Single Outer Ring) Type | ||||||||||
| 352905 | 25 | 52 | 33 | 33 | 68.5 | 86.5 | 5000 | 6700 | 0.45 | TS, Compact |
| 352906 | 30 | 55 | 34 | 34 | 72.5 | 95 | 4800 | 6300 | 0.52 | TS, Compact |
| 352907 | 35 | 62 | 36 | 36 | 80 | 112 | 4300 | 5600 | 0.75 | TS, General purpose |
| 352908 | 40 | 68 | 38 | 38 | 87.5 | 130 | 4000 | 5300 | 0.95 | TS, General purpose |
| 352909 | 45 | 75 | 40 | 40 | 95 | 150 | 3800 | 5000 | 1.25 | TS, General purpose |
| 352910 | 50 | 80 | 40 | 40 | 102 | 165 | 3600 | 4800 | 1.35 | TS, General purpose |
| 352911 | 55 | 90 | 46 | 46 | 125 | 210 | 3400 | 4500 | 2.1 | TS, High capacity |
| 352912 | 60 | 95 | 46 | 46 | 130 | 220 | 3200 | 4300 | 2.25 | TS, High capacity |
| 352913 | 65 | 100 | 46 | 46 | 135 | 230 | 3000 | 4000 | 2.4 | TS, High capacity |
| 352914 | 70 | 110 | 54 | 54 | 175 | 300 | 2800 | 3800 | 3.5 | TS, Heavy duty |
| 352915 | 75 | 115 | 54 | 54 | 180 | 310 | 2600 | 3600 | 3.7 | TS, Heavy duty |
| 352916 | 80 | 125 | 60 | 60 | 210 | 370 | 2400 | 3400 | 5 | TS, Heavy duty |
| 352917 | 85 | 130 | 60 | 60 | 215 | 380 | 2200 | 3200 | 5.2 | TS, Heavy duty |
| 352918 | 90 | 140 | 67 | 67 | 265 | 480 | 2000 | 3000 | 7.2 | TS, Extra heavy duty |
| 352920 | 100 | 150 | 67 | 67 | 275 | 500 | 1800 | 2600 | 7.5 | TS, Extra heavy duty |
| TDIT (Two-Row Double Inner Ring - Tapered Bore) | ||||||||||
| 31309 | 45 | 100 | 55 | 55 | 180 | 255 | 3000 | 4000 | 2.1 | TDIT, Tapered bore 1:12 |
| 31311 | 55 | 120 | 65 | 65 | 245 | 355 | 2600 | 3600 | 3.8 | TDIT, Tapered bore 1:12 |
| 31313 | 65 | 140 | 73 | 73 | 305 | 450 | 2200 | 3200 | 5.9 | TDIT, Tapered bore 1:12 |
| 31315 | 75 | 160 | 80 | 80 | 365 | 550 | 2000 | 2800 | 8.6 | TDIT, Tapered bore 1:12 |
| 31317 | 85 | 180 | 85 | 85 | 425 | 650 | 1800 | 2600 | 11.5 | TDIT, Tapered bore 1:12 |
| 31319 | 95 | 200 | 90 | 90 | 480 | 750 | 1700 | 2400 | 15 | TDIT, Tapered bore 1:12 |
| 31321 | 105 | 225 | 98 | 98 | 570 | 900 | 1500 | 2200 | 20.5 | TDIT, Tapered bore 1:12 |
Founded in 2004, BMT Bearings has developed from a local bearing manufacturer into a globally exported bearing enterprise with annual production reaching 100 million pieces. Our company has continuously invested in automatic grinding lines, assembly systems, and precision inspection equipment to maintain consistent product quality.
We are certified under ISO9001 and IATF 16949 quality management systems, which allows us to meet strict industrial and automotive bearing standards.
What makes our Double Row Tapered Roller Bearing different is not only the product itself, but also the manufacturing experience behind it.
· More than 20 years of bearing manufacturing experience
· Stable EMQ quality production system
· Automatic grinding and assembly lines
· Strict dimensional and vibration inspection
· OEM and customized bearing solutions
· Fast response for global buyers
· Long-term export experience worldwide
The double row design allows the bearing to support combined radial and axial loads in both directions. This structure improves operational stability and is ideal for heavy-load applications.
Compared with single row bearings, the double row structure provides better rigidity and shaft positioning performance, reducing vibration during operation.
We use high-quality bearing steel, optimized heat treatment processes, and precision grinding technology to improve wear resistance and extend bearing life.
Our production system ensures stable dimensional tolerances and smooth rotation performance, helping equipment maintain reliable operation even under continuous heavy-duty conditions.
A reliable Double Row Tapered Roller Bearing can significantly reduce downtime and replacement frequency, helping customers lower long-term maintenance expenses.
At BMT Bearings, we do not rely on theoretical descriptions alone. Every production batch goes through strict testing procedures including dimensional inspection, noise testing, rotation accuracy checks, and surface quality control.
Our engineering team works closely with customers to recommend suitable bearing models based on actual working conditions such as load, speed, temperature, lubrication, and installation environment.
Many of our long-term customers use our Double Row Tapered Roller Bearing products in continuous industrial production lines where stable performance is essential.
Our Double Row Tapered Roller Bearing products are commonly used in:
· Automotive wheel hubs
· Industrial gearboxes
· Mining machinery
· Rolling mills
· Construction equipment
· Agricultural machinery
· Conveyor systems
· Heavy-duty transmission equipment
Different industries require different bearing performance standards. We support customized solutions according to customer drawings, samples, and technical requirements.
As an experienced bearing supplier, BMT Bearings supports OEM and customized manufacturing services.
We can provide:
· Customized dimensions
· Laser logo marking
· Special packaging
· Different clearance requirements
· Customized materials
· High-speed or heavy-load solutions
Our export team understands international procurement requirements and provides efficient communication during the entire order process.
Quality consistency is the foundation of long-term cooperation.
From raw material selection to finished product packaging, BMT Bearings follows standardized inspection procedures to ensure stable quality in every shipment.
Our factory adopts advanced inspection equipment to monitor:
· Bearing hardness
· Surface roughness
· Rotational noise
· Radial clearance
· Dimensional precision
· Concentricity
This allows us to provide bearings suitable for demanding industrial applications worldwide.
A Double Row Tapered Roller Bearing is mainly used in applications requiring high radial load capacity and axial load support in two directions. It is commonly found in automotive systems, industrial machinery, mining equipment, and rolling mills.
Double row bearings provide higher rigidity, improved load distribution, and better shaft positioning performance. They are suitable for heavy-duty and high-impact working conditions.
Yes. We support OEM and customized bearing production according to drawings, samples, dimensions, and special technical requirements.
We use automatic production lines and strict inspection systems throughout manufacturing. Every bearing undergoes dimensional, vibration, and rotational testing before shipment.
Our customers mainly come from automotive manufacturing, industrial machinery, agricultural equipment, electric motors, pumps, mining equipment, and transmission systems.
Yes. BMT Bearings has extensive export experience and supplies bearing products to customers in many international markets.

Choosing the right bearing supplier is not only about price. Stable quality, technical support, delivery reliability, and long-term cooperation are equally important.
At BMT Bearings, we combine manufacturing experience, strict quality standards, and practical industry knowledge to provide dependable Double Row Tapered Roller Bearing solutions for global customers.
We welcome distributors, wholesalers, equipment manufacturers, and industrial buyers to contact us for cooperation.
Address
No.183,Longfeng,West of Zhangting industrial Zone,Yuyao,Ningbo,China
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