Cone for Tapered Roller Bearing – Inch Series and J Series

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

NTN Corporation, a global leader in bearing technology, offers a comprehensive range of high-performance **Tapered Roller Bearings** designed to meet the rigorous demands of industrial machinery, automotive systems, and precision equipment. Among its extensive portfolio, NTN’s **Inch and J Series Tapered Roller Bearings** stand out for their superior load capacity, durability, and precision engineering. These bearings are optimized to handle combined radial and axial loads efficiently, making them indispensable in applications where reliability under heavy stress is critical.

### **Technical Features & Design Advantages**
NTN’s **Inch and J Series Tapered Roller Bearings** feature a precision-engineered conical geometry, with rollers arranged at an angle between the inner ring (cone) and outer ring (cup). This design ensures optimal load distribution, reducing friction and wear while enhancing operational longevity. Key features include:

– **High Load Capacity**: The tapered roller design effectively manages both radial and thrust loads, making these bearings ideal for heavy-duty applications.
– **Precision Ground Surfaces**: NTN employs advanced grinding techniques to ensure ultra-smooth contact surfaces, minimizing vibration and noise while improving efficiency.
– **Robust Materials & Heat Treatment**: Manufactured from high-grade steel and subjected to specialized heat treatment processes, these bearings offer exceptional hardness and fatigue resistance.
– **Interchangeability & Standard Compliance**: The **Inch Series** adheres to imperial measurements, while the **J Series** follows metric dimensions, ensuring compatibility with a wide range of machinery and automotive systems.

### **Key Components: Cone Assembly for Tapered Roller Bearings**
The **Cone (inner ring with rollers and cage)** is a critical component of NTN’s tapered roller bearings, engineered for seamless integration and peak performance. The cone assembly ensures:
– **Stable Roller Guidance**: The precision-machined cage retains rollers in optimal alignment, preventing skewing and ensuring smooth rotation.
– **Easy Maintenance & Replacement**: Designed for quick installation and serviceability, reducing downtime in industrial and automotive applications.

### **Performance Benefits**
NTN’s tapered roller bearings deliver:
– **Extended Service Life**: Advanced lubrication retention and wear-resistant materials reduce maintenance frequency.
– **Energy Efficiency**: Optimized internal geometry minimizes friction, lowering power consumption in rotating machinery.
– **High-Speed Capability**: Balanced design and superior materials allow stable operation even at elevated speeds.

### **Typical Applications**
These bearings are widely used in:
– **Industrial Machinery**: Gearboxes, conveyors, pumps, and mining equipment.
– **Automotive Systems**: Wheel hubs, transmissions, differentials, and axle assemblies.
– **Precision Equipment**: Agricultural machinery, construction vehicles, and material handling systems.

With a commitment to innovation and quality, NTN’s **Inch and J Series Tapered Roller Bearings** provide unmatched reliability, ensuring peak performance in the most demanding environments. Whether in heavy industry or high-precision automotive applications, NTN bearings are engineered to exceed expectations.

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Part Number B Wi R Mass
HM804843
44.450 mm
29.370 mm
3.600 mm
18685
44.450 mm
17.463 mm
2.800 mm
0.221 kg
25580
44.450 mm
25.400 mm
3.600 mm
0.354 kg
25581
44.450 mm
25.400 mm
0.500 mm
0.358 kg
25582
44.450 mm
25.400 mm
5.100 mm
25583
44.450 mm
35.878 mm
3.800 mm
0.497 kg
33885
44.450 mm
28.575 mm
0.800 mm
0.715 kg
355
44.450 mm
21.692 mm
2.300 mm
0.346 kg
355A
44.450 mm
21.692 mm
0.800 mm
0.350 kg
355X
44.450 mm
21.692 mm
3.600 mm
0.344 kg
3578
44.450 mm
30.886 mm
3.600 mm
0.466 kg
3578A
44.450 mm
30.886 mm
5.600 mm
0.466 kg
3782
44.450 mm
30.302 mm
3.600 mm
0.663 kg
3783
44.450 mm
30.302 mm
6.400 mm
0.663 kg
4370
44.450 mm
40.386 mm
3.600 mm
438
44.450 mm
29.901 mm
3.600 mm
0.566 kg
45280
44.450 mm
30.958 mm
0.800 mm
0.992 kg
460
44.450 mm
29.317 mm
3.600 mm
0.915 kg
46175
44.450 mm
31.750 mm
0.800 mm
46176
44.450 mm
31.750 mm
3.600 mm
0.625 kg
49175
44.450 mm
31.750 mm
3.600 mm
0.641 kg
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41.275 mm
36.513 mm
1.500 mm
HM903244
41.275 mm
28.301 mm
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0.651 kg
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41.275 mm
28.575 mm
3.600 mm
0.651 kg