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
59412
104.775 mm
28.575 mm
36.512 mm
3.300 mm
0.471 kg
59425
107.950 mm
28.575 mm
36.513 mm
3.300 mm
59429
108.966 mm
26.988 mm
34.925 mm
3.300 mm
64700
177.800 mm
30.163 mm
41.275 mm
3.300 mm
64708
179.974 mm
30.163 mm
41.275 mm
3.300 mm
42587B
149.225 mm
24.608 mm
31.750 mm
3.300 mm
0.710 kg
42620
127.000 mm
22.225 mm
30.162 mm
3.300 mm
0.420 kg
45220
104.775 mm
23.813 mm
30.162 mm
3.300 mm
0.340 kg
45221
104.775 mm
23.813 mm
30.163 mm
0.800 mm
0.351 kg
46720
225.425 mm
33.338 mm
41.275 mm
3.300 mm
1.800 kg
47420
120.000 mm
26.195 mm
32.545 mm
3.300 mm
0.473 kg
47620
133.350 mm
26.195 mm
33.338 mm
3.300 mm
0.560 kg
47620A
133.350 mm
26.195 mm
33.338 mm
0.800 mm
0.584 kg
47622W
136.525 mm
55.563 mm
55.563 mm
3.300 mm
47623A
136.525 mm
44.450 mm
44.450 mm
N/A
1.250 kg
47820
146.050 mm
26.195 mm
33.338 mm
3.300 mm
0.660 kg
48750
190.500 mm
25.400 mm
34.925 mm
3.300 mm
2.690 kg
42584
148.430 mm
21.433 mm
28.575 mm
3.000 mm
0.540 kg
48120
161.925 mm
26.988 mm
34.925 mm
3.300 mm
0.828 kg
42585
148.430 mm
25.400 mm
28.515 mm
3.300 mm
0.601 kg