Double Row Cylindrical Roller Bearings

**NTN Double Row Cylindrical Roller Bearings: Engineered for Heavy Loads and Precision Performance**

NTN Corporation, a global leader in bearing technology, offers high-performance **Double Row Cylindrical Roller Bearings** designed to deliver exceptional load capacity, rigidity, and operational reliability in demanding industrial and automotive applications. These bearings are engineered to accommodate heavy radial loads while maintaining precise alignment, making them ideal for machinery and systems where durability and accuracy are critical.

### **Technical Features & Design Advantages**
NTN’s **Double Row Cylindrical Roller Bearings** feature a robust construction with two rows of precision-ground cylindrical rollers, guided by high-strength cages. Key design elements include:

– **High Radial Load Capacity**: The double-row arrangement distributes loads evenly across both rows, significantly enhancing bearing life under heavy radial forces.
– **Optimized Roller Geometry**: NTN’s advanced profiling reduces edge stress, minimizing friction and wear even under misalignment or high-speed conditions.
– **Enhanced Rigidity & Stability**: The bearings’ rigid structure prevents deflection, ensuring consistent performance in precision equipment and heavy machinery.
– **Versatile Cage Options**: Available with pressed steel or machined brass cages for improved strength and heat resistance in high-speed applications.
– **Sealing & Lubrication Options**: Customizable sealing solutions (such as contact or non-contact seals) and pre-greased configurations extend service intervals in harsh environments.

### **Performance Advantages**
NTN’s double-row cylindrical roller bearings outperform single-row designs by offering:

– **Higher Load Ratings**: Capable of handling extreme radial loads in a compact footprint, reducing the need for larger bearing assemblies.
– **Improved Running Accuracy**: Precision manufacturing ensures smooth rotation with minimal vibration, critical for machine tools and gearboxes.
– **Long Service Life**: Advanced heat treatment and surface finishing technologies enhance fatigue resistance, reducing maintenance downtime.
– **Adaptability**: Suitable for both fixed and floating bearing arrangements, accommodating thermal expansion in shaft systems.

### **Typical Applications**
These bearings are widely used in industries requiring robust, high-precision rotation, including:

– **Industrial Machinery**: Gearboxes, rolling mills, printing presses, and large pumps.
– **Automotive Systems**: Heavy-duty transmissions, axle systems, and electric vehicle drivetrains.
– **Precision Equipment**: Machine tool spindles, robotics, and wind turbine pitch/yaw systems.

By combining superior engineering with rigorous quality control, NTN’s **Double Row Cylindrical Roller Bearings** provide unmatched performance in the most challenging operating conditions. Whether in high-speed industrial equipment or heavy-load automotive applications, these bearings ensure reliability, efficiency, and extended operational life.

For applications demanding durability, precision, and load resilience, NTN’s advanced bearing solutions stand as a trusted choice for engineers worldwide.

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Part Number d D B r Mass
SL04-5040NR
200.000 mm
310.000 mm
150.000 mm
2.000 mm
41.800 kg
SL04-5044NR
220.000 mm
340.000 mm
160.000 mm
2.000 mm
55.400 kg
SL04-5048NR
240.000 mm
360.000 mm
160.000 mm
2.000 mm
57.800 kg
SL04-5052NR
260.000 mm
400.000 mm
190.000 mm
2.500 mm
89.360 kg
SL04-5056NR
280.000 mm
420.000 mm
190.000 mm
2.500 mm
93.900 kg
SL04-5060NR
300.000 mm
460.000 mm
218.000 mm
2.500 mm
SL04-5064NR
320.000 mm
480.000 mm
218.000 mm
2.500 mm
144.000 kg
SL04-5068NR
340.000 mm
520.000 mm
243.000 mm
3.000 mm
194.000 kg
SL04-5072NR
360.000 mm
540.000 mm
243.000 mm
3.000 mm
SL04-5076NR
380.000 mm
560.000 mm
243.000 mm
3.000 mm
SL04-5080NR
400.000 mm
600.000 mm
272.000 mm
3.000 mm
SL04-5030NR
150.000 mm
225.000 mm
100.000 mm
1.500 mm
13.600 kg
SL04-5084NR
420.000 mm
620.000 mm
272.000 mm
3.000 mm
SL04-5032NR
160.000 mm
240.000 mm
109.000 mm
2.000 mm
16.800 kg
SL04-5088NR
440.000 mm
650.000 mm
280.000 mm
4.000 mm
SL04-5034LLNR
170.000 mm
260.000 mm
122.000 mm
2.000 mm
SL04-5036NR
180.000 mm
280.000 mm
136.000 mm
2.000 mm
30.600 kg
SL04-5038NR
190.000 mm
290.000 mm
136.000 mm
2.000 mm
31.700 kg
SL04-5015NR
75.000 mm
115.000 mm
54.000 mm
1.000 mm
1.970 kg
SL04-5016NR
80.000 mm
125.000 mm
60.000 mm
1.000 mm
2.675 kg