Tapered Roller Set – Metric Series

**NTN Tapered Roller Bearings – Metric ISO Series: Precision, Durability, and High-Performance Load Handling**

NTN’s **Metric ISO Series Tapered Roller Bearings** and **Tapered Roller Sets** represent a pinnacle of engineering excellence, designed to deliver unmatched reliability in demanding industrial and automotive applications. These bearings are meticulously crafted to handle combined radial and axial loads with superior efficiency, making them indispensable for heavy-duty machinery, precision equipment, and high-performance automotive systems.

### **Technical Features & Design Advantages**
NTN’s tapered roller bearings are manufactured to **ISO metric standards**, ensuring global compatibility and seamless integration into a wide range of machinery. Key design features include:

– **Optimized Roller & Raceway Geometry**: Precision-ground tapered rollers and raceways minimize friction while distributing loads evenly, enhancing bearing life and reducing wear.
– **High-Grade Materials**: Constructed from premium **case-hardened chromium steel**, these bearings offer exceptional resistance to fatigue, shock loads, and harsh operating conditions.
– **Advanced Cage Designs**: Options include **pressed steel cages** (for high-speed stability) and **machined brass cages** (for extreme-load applications), ensuring optimal roller guidance and lubrication retention.
– **Sealing & Lubrication Options**: Configurable with **contact or non-contact seals**, as well as specialized grease formulations for extended service intervals in contaminated environments.

### **Performance Benefits**
NTN’s tapered roller bearings excel in applications requiring **rigidity, high load capacity, and precise alignment**:

– **Superior Load Handling**: The tapered design efficiently manages **combined radial and thrust loads**, making them ideal for gearboxes, wheel hubs, and heavy industrial equipment.
– **Extended Service Life**: Reduced internal sliding friction and optimized heat dissipation contribute to **longer operational lifespans**, even under continuous high-stress conditions.
– **Enhanced Operational Efficiency**: Precision manufacturing ensures **low noise and vibration**, critical for automotive drivetrains, wind turbines, and precision machine tools.

### **Typical Applications**
These bearings are widely used across industries where **durability and precision** are non-negotiable:

– **Automotive Systems**: Wheel bearings, differential assemblies, and transmission systems in passenger vehicles, trucks, and off-road machinery.
– **Industrial Machinery**: Conveyors, mining equipment, construction machinery, and agricultural gearboxes subjected to heavy loads and harsh environments.
– **Precision Equipment**: Machine tool spindles, robotics, and aerospace components requiring **high rotational accuracy and rigidity**.

### **Conclusion**
NTN’s **Metric ISO Series Tapered Roller Bearings** and **Tapered Roller Sets** combine cutting-edge engineering with robust materials to deliver **peak performance in the most demanding applications**. Whether in automotive drivetrains or heavy industrial systems, these bearings provide **reliable load support, reduced maintenance, and extended operational life**—making them a trusted choice for engineers worldwide.

For applications where **precision, strength, and endurance** are critical, NTN’s tapered roller bearings stand as a benchmark of quality and innovation.

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Part Number d D T r Mass
30221
105.000 mm
190.000 mm
39.000 mm
2.000 mm
4.390 kg
30304A
20.000 mm
52.000 mm
16.250 mm
1.500 mm
0.176 kg
30222
110.000 mm
200.000 mm
41.000 mm
2.000 mm
5.180 kg
30304CA
20.000 mm
52.000 mm
16.250 mm
1.500 mm
30224
120.000 mm
215.000 mm
43.500 mm
2.000 mm
6.230 kg
30305
25.000 mm
62.000 mm
18.250 mm
1.500 mm
0.272 kg
30226
130.000 mm
230.000 mm
43.750 mm
2.000 mm
7.250 kg
30305A
25.000 mm
62.000 mm
18.250 mm
1.500 mm
30226UDB+57.5
130.000 mm
230.000 mm
N/A
N/A
19.800 kg
30228
140.000 mm
250.000 mm
45.750 mm
3.000 mm
30228U
140.000 mm
250.000 mm
45.750 mm
2.500 mm
9.260 kg
30230
150.000 mm
270.000 mm
49.000 mm
2.500 mm
11.200 kg
30234
170.000 mm
310.000 mm
57.000 mm
4.000 mm
30236
180.000 mm
320.000 mm
57.000 mm
4.000 mm
30238
190.000 mm
340.000 mm
60.000 mm
4.000 mm
30240
200.000 mm
360.000 mm
64.000 mm
4.000 mm
30260
300.000 mm
540.000 mm
96.000 mm
5.000 mm
83.600 kg
30302
15.000 mm
42.000 mm
14.250 mm
1.000 mm
0.098 kg
30209UP4
45.000 mm
85.000 mm
20.750 mm
1.500 mm
0.490 kg
30220
100.000 mm
180.000 mm
37.000 mm
2.000 mm
3.780 kg