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
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130.000 mm
35.000 mm
43.000 mm
2.500 mm
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29.000 mm
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50.800 mm
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63.500 mm
82.550 mm
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317.500 mm
111.125 mm
146.050 mm
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39.688 mm
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336.550 mm
77.788 mm
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11.000 kg
545141
358.775 mm
22.225 mm
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421437
365.049 mm
63.500 mm
92.075 mm
3.300 mm
421450
368.300 mm
63.500 mm
92.075 mm
3.300 mm
M257110
419.100 mm
53.975 mm
130.175 mm
6.400 mm
291750
444.500 mm
39.688 mm
63.500 mm
1.500 mm
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444.500 mm
76.200 mm
101.600 mm
4.800 mm
LM761610
457.098 mm
49.213 mm
122.238 mm
3.300 mm
L467510
508.000 mm
47.625 mm
61.913 mm
3.300 mm
M278710
812.800 mm
120.650 mm
155.575 mm
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254.000 mm
21.433 mm
28.575 mm
1.500 mm