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
MR1208
40.000 mm
18.000 mm
1.520 mm
0.103 kg
MR1209
45.000 mm
19.000 mm
1.520 mm
0.127 kg
MR1210
50.000 mm
20.000 mm
1.520 mm
0.147 kg
MR1211
55.000 mm
21.000 mm
2.030 mm
0.191 kg
MR1212
60.000 mm
22.000 mm
2.030 mm
0.227 kg
MR1213
65.000 mm
23.000 mm
2.540 mm
0.327 kg
MR1214
70.000 mm
24.000 mm
2.540 mm
0.345 kg
MR1216
80.000 mm
26.000 mm
2.540 mm
0.454 kg
MR1218
90.000 mm
30.000 mm
3.180 mm
0.653 kg
MR1220
100.000 mm
34.000 mm
3.960 mm
1.007 kg
MR1222
110.000 mm
38.000 mm
3.960 mm
1.370 kg
MR1304
20.000 mm
15.000 mm
1.020 mm
0.041 kg
MR1305
25.000 mm
17.000 mm
1.020 mm
0.064 kg
MR1306
30.000 mm
19.000 mm
1.520 mm
0.091 kg
MA5213
65.000 mm
38.100 mm
2.540 mm
0.517 kg
MA5214
70.000 mm
39.688 mm
2.540 mm
0.542 kg
MA5215
75.000 mm
41.275 mm
2.540 mm
0.569 kg
MA5216
80.000 mm
44.450 mm
2.540 mm
0.717 kg
MA5217
85.000 mm
49.212 mm
3.180 mm
0.938 kg
MA5218
90.000 mm
52.388 mm
3.180 mm
1.067 kg
MA5219
95.000 mm
55.562 mm
3.180 mm
1.284 kg
MA5220
100.000 mm
60.325 mm
3.960 mm
1.686 kg
MA5224
120.000 mm
76.200 mm
4.750 mm
3.071 kg
MA5226
130.000 mm
79.375 mm
4.750 mm
3.402 kg