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
359A
46.038 mm
21.692 mm
3.600 mm
0.327 kg
359S
46.038 mm
21.692 mm
2.300 mm
0.327 kg
3777
46.038 mm
30.302 mm
3.600 mm
436
46.038 mm
29.901 mm
3.600 mm
0.539 kg
369A
47.625 mm
22.225 mm
3.600 mm
0.391 kg
369S
47.625 mm
22.225 mm
2.300 mm
0.395 kg
370A
47.625 mm
22.225 mm
5.100 mm
0.342 kg
3778
47.625 mm
30.302 mm
6.400 mm
0.599 kg
3779
47.625 mm
30.302 mm
3.600 mm
0.608 kg
HM804843PX1
44.450 mm
29.370 mm
3.600 mm
0.672 kg
HM807040
44.450 mm
36.513 mm
3.600 mm
1.116 kg
HM903247
44.450 mm
28.301 mm
1.300 mm
0.606 kg
HM903249
44.450 mm
28.575 mm
3.600 mm
0.606 kg
HM903249APX1
44.450 mm
28.301 mm
3.600 mm
0.602 kg
HM903249PX2
44.450 mm
28.575 mm
3.600 mm
0.607 kg
L102849
44.450 mm
18.258 mm
1.500 mm
25584
44.983 mm
25.400 mm
1.500 mm
0.351 kg
25584A
44.988 mm
25.400 mm
3.600 mm
3776
44.983 mm
30.302 mm
3.600 mm
0.653 kg
527S
44.983 mm
36.068 mm
4.300 mm
HM905843
44.988 mm
31.750 mm
2.500 mm
0.916 kg
JLM603048F
45.000 mm
24.000 mm
3.500 mm
0.254 kg
17887
45.230 mm
20.638 mm
2.000 mm
0.268 kg
358
45.001 mm
21.692 mm
1.500 mm