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
545141
358.775 mm
22.225 mm
33.338 mm
3.300 mm
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
923175
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
6.400 mm
3920E
112.713 mm
23.813 mm
30.163 mm
3.300 mm
493XB
140.000 mm
22.225 mm
30.163 mm
3.000 mm
4T-07196STU0FD
50.005 mm
9.525 mm
6.749 mm
1.000 mm
0.034 kg
LM665910A
514.350 mm
63.500 mm
82.550 mm
0.500 mm
13.500 kg
14525
68.263 mm
15.875 mm
20.638 mm
2.300 mm
97900
228.600 mm
38.100 mm
53.975 mm
3.300 mm
H917810
180.975 mm
35.720 mm
53.975 mm
3.300 mm
2.180 kg
L102810
73.025 mm
15.083 mm
18.258 mm
1.500 mm
0.104 kg
42584PW4
148.430 mm
21.433 mm
28.575 mm
3.000 mm
3420B
79.375 mm
23.813 mm
N/A
3.300 mm
0.258 kg
3331
80.167 mm
23.813 mm
29.370 mm
0.800 mm
0.221 kg
HM801310
82.575 mm
23.020 mm
29.370 mm
3.300 mm
0.277 kg
HM88512
73.812 mm
23.020 mm
29.370 mm
3.300 mm
HM88611AS
72.626 mm
19.842 mm
25.400 mm
3.300 mm
0.188 kg
394D
110.000 mm
46.038 mm
52.385 mm
0.800 mm