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
32318
90.000 mm
190.000 mm
67.500 mm
2.500 mm
8.570 kg
32319
95.000 mm
200.000 mm
71.500 mm
2.500 mm
10.100 kg
32320
100.000 mm
215.000 mm
77.500 mm
3.000 mm
12.700 kg
32321
105.000 mm
225.000 mm
81.500 mm
3.000 mm
32309
45.000 mm
100.000 mm
38.250 mm
1.500 mm
1.460 kg
32324
120.000 mm
260.000 mm
90.500 mm
2.500 mm
22.400 kg
32310
50.000 mm
110.000 mm
42.250 mm
2.000 mm
1.920 kg
32326DB+7.5
130.000 mm
280.000 mm
N/A
1.500 mm
56.768 kg
32311
55.000 mm
120.000 mm
45.500 mm
2.000 mm
2.440 kg
32330DB+8C3
150.000 mm
320.000 mm
N/A
1.500 mm
87.009 kg
32312
60.000 mm
130.000 mm
48.500 mm
2.000 mm
3.020 kg
32340DB+20C3
200.000 mm
420.000 mm
N/A
2.000 mm
189.000 kg
32312C
60.000 mm
130.000 mm
48.600 mm
2.500 mm
2.985 kg
32313
65.000 mm
140.000 mm
51.000 mm
2.000 mm
3.660 kg
323138
190.000 mm
120.000 mm
N/A
5.000 mm
32314
70.000 mm
150.000 mm
54.000 mm
2.000 mm
4.460 kg
32315
75.000 mm
160.000 mm
58.000 mm
2.000 mm
5.350 kg
32316
80.000 mm
170.000 mm
61.500 mm
2.000 mm
6.410 kg
32306C
30.000 mm
72.000 mm
28.750 mm
1.500 mm
32306CR
30.000 mm
72.000 mm
28.750 mm
1.500 mm