Inner Ring for Cylindrical Roller Bearings

**NTN Cylindrical Roller Bearings: Precision Engineered for Demanding Applications**

NTN cylindrical roller bearings are renowned for their exceptional load capacity, durability, and precision, making them a preferred choice for industrial machinery, automotive systems, and high-performance equipment. Designed to handle heavy radial loads and high-speed operations, these bearings incorporate advanced engineering to ensure reliability in even the most demanding environments. Among their key components, the **inner ring for cylindrical roller bearings** plays a critical role in maintaining structural integrity and operational efficiency.

### **Technical Features & Design Advantages**
The **NTN cylindrical roller bearing inner ring** is precision-machined from high-quality steel, undergoing rigorous heat treatment processes to enhance hardness and fatigue resistance. Its optimized raceway geometry ensures smooth roller movement, reducing friction and minimizing wear over extended service life. Key features include:

– **High Radial Load Capacity**: The inner ring’s robust construction supports substantial radial loads, making it ideal for heavy machinery such as gearboxes, pumps, and construction equipment.
– **Precision Ground Surfaces**: Ultra-precise machining ensures tight tolerances, reducing vibration and noise in high-speed applications like electric motors or machine tool spindles.
– **Advanced Heat Treatment**: Carburizing or induction hardening processes improve surface durability while maintaining core toughness, preventing premature failure under shock or variable loads.
– **Optimized Roller Guidance**: The inner ring’s flange design (where applicable) ensures proper roller alignment, preventing skewing and ensuring even load distribution.

### **Performance Benefits**
NTN’s cylindrical roller bearing components are engineered to deliver superior performance in harsh conditions:
– **Extended Service Life**: Reduced friction and wear-resistant materials enhance longevity, lowering maintenance costs.
– **High-Speed Capability**: Precision balancing and optimized internal clearances allow stable operation at elevated speeds, critical for automotive transmissions or industrial drivetrains.
– **Versatility**: Available in single-row, double-row, and multi-row configurations, NTN bearings accommodate diverse load and space requirements.

### **Typical Applications**
NTN cylindrical roller bearings and their inner ring components are widely used in:
– **Industrial Machinery**: Presses, conveyors, and mining equipment requiring high radial load support.
– **Automotive Systems**: Wheel hubs, transmissions, and differentials where durability and precision are paramount.
– **Precision Equipment**: Machine tools, robotics, and aerospace systems demanding low vibration and high rotational accuracy.

By combining cutting-edge materials, precision manufacturing, and rigorous testing, NTN ensures that its cylindrical roller bearing components deliver unmatched reliability and efficiency. Whether in heavy industrial settings or high-performance automotive applications, NTN’s engineering excellence provides a competitive edge in operational performance and longevity.

For industries that demand durability under load, speed, and precision, NTN cylindrical roller bearings—and their critical inner ring components—stand as a trusted solution.

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Part Number B W R Mass
MA5230
150.000 mm
88.900 mm
6.350 mm
5.615 kg
MA5304
20.000 mm
22.225 mm
1.020 mm
0.054 kg
MA5305
25.000 mm
25.400 mm
1.020 mm
0.082 kg
MA5306
30.000 mm
30.162 mm
1.520 mm
0.136 kg
MA5307
35.000 mm
34.925 mm
1.520 mm
0.204 kg
MA5308
40.000 mm
136.512 mm
1.520 mm
0.250 kg
MA5310
50.000 mm
44.450 mm
2.030 mm
0.472 kg
MA5313
65.000 mm
58.738 mm
2.540 mm
0.989 kg
MAB1212
60.000 mm
55.563 mm
N/A
0.544 kg
MAB1217
85.000 mm
53.975 mm
N/A
1.009 kg
MA1306
30.000 mm
19.000 mm
1.520 mm
0.085 kg
MA1307
35.000 mm
21.000 mm
1.520 mm
0.121 kg
MA1308
40.000 mm
23.000 mm
1.520 mm
0.155 kg
MA1309
45.000 mm
25.000 mm
2.030 mm
0.224 kg
MA1310
50.000 mm
27.000 mm
2.030 mm
0.282 kg
MA1311
55.000 mm
29.000 mm
2.030 mm
0.360 kg
MA1312
60.000 mm
31.000 mm
2.540 mm
0.447 kg
MA1313
65.000 mm
33.000 mm
2.540 mm
0.547 kg
MA1314
70.000 mm
35.000 mm
3.100 mm
0.642 kg
MA1315
75.000 mm
37.000 mm
3.180 mm
0.795 kg
MA1316
80.000 mm
39.000 mm
3.180 mm
0.921 kg
MA1318
90.000 mm
43.000 mm
3.960 mm
1.324 kg
MA5205
25.000 mm
20.638 mm
1.020 mm
0.051 kg
MA5206
30.000 mm
23.812 mm
1.020 mm
0.078 kg