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
30307D
35.000 mm
80.000 mm
22.750 mm
1.500 mm
0.530 kg
30308
40.000 mm
90.000 mm
25.250 mm
1.500 mm
0.769 kg
30308A
40.000 mm
90.000 mm
25.250 mm
1.500 mm
30308C
40.000 mm
90.000 mm
25.250 mm
1.500 mm
30308D
40.000 mm
90.000 mm
25.250 mm
1.500 mm
30309
45.000 mm
100.000 mm
27.250 mm
1.500 mm
1.010 kg
30309D
45.000 mm
100.000 mm
27.250 mm
1.500 mm
0.958 kg
30309DDF
45.000 mm
100.000 mm
N/A
1.500 mm
30309DDFC3
45.000 mm
100.000 mm
N/A
1.500 mm
30305C
25.000 mm
62.000 mm
18.250 mm
1.500 mm
30309DDFDX1
45.000 mm
100.000 mm
N/A
1.500 mm
30305D
25.000 mm
62.000 mm
18.250 mm
1.500 mm
0.284 kg
30310
50.000 mm
110.000 mm
29.250 mm
2.000 mm
1.310 kg
30306
30.000 mm
72.000 mm
20.750 mm
1.500 mm
0.408 kg
30310D
50.000 mm
110.000 mm
29.250 mm
2.000 mm
1.250 kg
30306CA
30.000 mm
72.000 mm
20.750 mm
1.500 mm
30311
55.000 mm
120.000 mm
31.500 mm
2.000 mm
1.660 kg
30306D
30.000 mm
72.000 mm
20.750 mm
1.500 mm
0.398 kg
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