Double Row Tapered Roller Bearings

**NTN Tapered Roller Bearings: Precision, Durability, and High-Performance Solutions for Demanding Applications**

NTN is a globally recognized leader in the design and manufacturing of high-performance rolling bearings, with its tapered roller bearings standing out for their exceptional load capacity, precision, and reliability. Among NTN’s extensive bearing portfolio, the **Metric ISO Series Tapered Roller Bearings** and **Double Row Tapered Roller Bearings** are engineered to deliver superior performance in the most demanding industrial, automotive, and precision equipment applications. These bearings are designed to handle combined radial and axial loads efficiently, making them indispensable in systems where durability, high-speed operation, and long service life are critical.

### **Technical Features and Performance Advantages**

NTN’s **Metric ISO Series Tapered Roller Bearings** adhere to international dimensional standards (ISO 355), ensuring seamless compatibility with a wide range of machinery. Their precision-ground rollers and raceways are optimized for smooth rolling motion, reducing friction and heat generation. Key features include:

– **High Load Capacity**: The tapered geometry allows for effective distribution of radial and axial loads, making these bearings ideal for heavy-duty applications.
– **Enhanced Rigidity and Alignment**: The cup-and-cone design ensures stable operation even under misalignment conditions, improving overall system reliability.
– **Superior Lubrication Retention**: Advanced sealing options and optimized internal geometries help maintain lubrication, extending bearing life in harsh environments.
– **Interchangeability**: Conforming to ISO standards, these bearings offer easy replacement and integration into existing systems.

For applications requiring even greater load support and rigidity, NTN’s **Double Row Tapered Roller Bearings** provide an exceptional solution. These bearings incorporate two rows of tapered rollers, significantly increasing radial and axial load capacity while maintaining compact dimensions. Their design minimizes deflection under heavy loads, making them ideal for high-stress applications such as gearboxes, heavy machinery, and large industrial equipment.

### **Typical Applications**

NTN’s tapered roller bearings are widely used across multiple industries, including:

– **Industrial Machinery**: Machine tools, construction equipment, mining machinery, and conveyor systems benefit from their high load capacity and resistance to shock loads.
– **Automotive Systems**: Wheel hubs, transmissions, and differentials rely on these bearings for their ability to handle dynamic forces and high rotational speeds.
– **Precision Equipment**: Gear reducers, pumps, and wind turbine systems utilize NTN’s tapered roller bearings for their precision and long-term reliability.

By combining advanced materials, precision engineering, and rigorous quality control, NTN ensures that its tapered roller bearings meet the highest performance standards. Whether in heavy industrial applications or high-speed automotive systems, NTN’s Metric ISO Series and Double Row Tapered Roller Bearings deliver unmatched durability, efficiency, and operational excellence.

For demanding environments where performance cannot be compromised, NTN’s tapered roller bearings provide the strength, precision, and reliability needed to keep machinery running smoothly—ensuring reduced downtime and lower total cost of ownership.

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Part Number d D C B1 r Mass
432320
100.000 mm
215.000 mm
127.000 mm
162.000 mm
4.000 mm
26.500 kg
432321
105.000 mm
225.000 mm
133.000 mm
170.000 mm
3.000 mm
30.200 kg
432322
110.000 mm
240.000 mm
142.000 mm
181.000 mm
4.000 mm
35.600 kg
432324
120.000 mm
260.000 mm
145.000 mm
188.000 mm
4.000 mm
47.000 kg
5E-4231/500G2
500.000 mm
830.000 mm
264.000 mm
330.000 mm
7.500 mm
678.000 kg
432312
60.000 mm
130.000 mm
91.000 mm
104.000 mm
3.000 mm
6.290 kg
432313
65.000 mm
140.000 mm
84.000 mm
108.000 mm
3.000 mm
7.550 kg
432314
70.000 mm
150.000 mm
92.000 mm
116.000 mm
3.000 mm
9.280 kg
432315
75.000 mm
160.000 mm
99.000 mm
125.000 mm
3.000 mm
11.500 kg
432228X
140.000 mm
250.000 mm
125.500 mm
153.000 mm
4.000 mm
30.100 kg
432316
80.000 mm
170.000 mm
104.000 mm
131.000 mm
3.000 mm
13.600 kg
432230X
150.000 mm
270.000 mm
130.000 mm
164.000 mm
3.000 mm
37.300 kg
432317
85.000 mm
180.000 mm
108.000 mm
137.000 mm
4.000 mm
15.400 kg
432230XUC3
150.000 mm
270.000 mm
130.000 mm
164.000 mm
3.000 mm
8.400 kg
432318
90.000 mm
190.000 mm
115.000 mm
144.000 mm
4.000 mm
18.200 kg
432232
160.000 mm
290.000 mm
144.000 mm
178.000 mm
4.000 mm
46.900 kg
432319
95.000 mm
200.000 mm
118.000 mm
151.000 mm
4.000 mm
21.500 kg
432234X
170.000 mm
310.000 mm
152.000 mm
192.000 mm
5.000 mm
58.200 kg
432234XC3
170.000 mm
310.000 mm
152.000 mm
192.000 mm
5.000 mm
58.200 kg
432236
180.000 mm
320.000 mm
152.000 mm
192.000 mm
5.000 mm
60.600 kg