Cup for Tapered Roller Bearing – Inch Series and J Series

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

NTN is a global leader in bearing technology, renowned for its high-performance tapered roller bearings designed to meet the rigorous demands of industrial machinery, automotive systems, and precision equipment. Among NTN’s extensive bearing portfolio, the **Inch and J Series Tapered Roller Bearings** stand out for their exceptional load capacity, durability, and precision engineering. These bearings are specifically optimized to handle combined radial and axial loads, making them ideal for applications where reliability and long service life are critical.

### **Technical Features and Design Advantages**
NTN’s **Inch and J Series Tapered Roller Bearings** feature a precision-machined conical geometry, with tapered rollers guided by a robust ribbed inner ring (cone) and a matching outer ring (cup). This design ensures optimal load distribution, minimizing friction and wear while enhancing operational efficiency. Key technical features include:

– **High Load Capacity:** The tapered roller design effectively manages both radial and thrust loads, making these bearings suitable for heavy-duty applications.
– **Precision-Ground Surfaces:** Advanced manufacturing techniques ensure tight tolerances and smooth operation, reducing vibration and noise.
– **Heat-Treated Components:** High-carbon chromium steel construction, combined with specialized heat treatment, enhances hardness and fatigue resistance.
– **Interchangeability:** NTN’s Inch and J Series bearings conform to standardized dimensions, ensuring compatibility with industry specifications.
– **Sealed and Open Variants:** Options include open bearings for high-speed applications and sealed units for contamination resistance in harsh environments.

### **Performance Benefits**
NTN’s tapered roller bearings deliver superior performance in demanding conditions, offering:

– **Extended Service Life:** Advanced materials and precision engineering reduce wear, prolonging bearing life even under heavy loads.
– **Enhanced Efficiency:** Optimized internal geometry minimizes friction, lowering energy consumption and operating temperatures.
– **Reliability in Harsh Conditions:** Whether in high-temperature industrial settings or high-load automotive applications, NTN bearings maintain consistent performance.
– **Easy Maintenance:** Standardized designs simplify installation and replacement, reducing downtime.

### **Components for Tapered Roller Bearings: Cups and Cones**
NTN provides **precision-engineered cups and cones** for tapered roller bearings, ensuring seamless compatibility and performance. The **cup (outer ring)** is designed to perfectly match the cone (inner ring assembly), maintaining optimal alignment and load distribution. These components are manufactured to exacting tolerances, ensuring smooth operation and long-term reliability.

### **Typical Applications**
NTN’s Inch and J Series Tapered Roller Bearings are widely used in:
– **Industrial Machinery:** Gearboxes, conveyors, mining equipment, and heavy machinery requiring high load capacity.
– **Automotive Systems:** Wheel hubs, differentials, transmissions, and axle systems where durability and precision are essential.
– **Precision Equipment:** Machine tools, agricultural machinery, and construction equipment demanding reliable rotational performance.

With a reputation for innovation and quality, NTN continues to set the benchmark for tapered roller bearing technology, delivering solutions that enhance performance, efficiency, and longevity across industries. Whether in automotive drivetrains or heavy industrial applications, NTN’s tapered roller bearings provide the reliability and precision needed to keep operations running smoothly.

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Part Number D Wo W r Mass
42586
148.430 mm
31.750 mm
34.925 mm
3.300 mm
48320
190.500 mm
33.338 mm
39.688 mm
3.300 mm
1.161 kg
42587
149.225 mm
24.608 mm
31.750 mm
3.300 mm
0.710 kg
48620
200.025 mm
34.130 mm
41.275 mm
3.300 mm
1.387 kg
42587B
149.225 mm
24.608 mm
31.750 mm
3.300 mm
0.710 kg
34500
127.000 mm
19.842 mm
26.988 mm
3.300 mm
0.533 kg
36620
193.675 mm
23.020 mm
28.575 mm
1.500 mm
1.580 kg
36620B
193.675 mm
23.020 mm
N/A
1.500 mm
1.656 kg
36920
227.013 mm
23.020 mm
30.162 mm
1.500 mm
0.898 kg
37624
158.750 mm
15.875 mm
23.020 mm
1.000 mm
37625
158.750 mm
15.875 mm
23.020 mm
3.300 mm
0.485 kg
37625B
158.750 mm
15.875 mm
23.020 mm
3.300 mm
29522
107.950 mm
19.050 mm
25.400 mm
0.800 mm
0.283 kg
39412
104.775 mm
15.875 mm
21.433 mm
2.000 mm
0.184 kg
29620
112.713 mm
19.050 mm
25.400 mm
3.300 mm
0.266 kg
39422
107.158 mm
21.204 mm
22.000 mm
2.300 mm
29620B
112.713 mm
19.050 mm
25.400 mm
3.300 mm
39520
112.713 mm
23.813 mm
30.162 mm
3.300 mm
0.350 kg
29630
120.650 mm
19.050 mm
25.400 mm
3.300 mm
0.481 kg
39521
112.713 mm
23.813 mm
30.163 mm
0.800 mm
0.360 kg