Double-Row Tapered Roller Bearings

**Introduction to NSK’s Double Row Tapered Roller Bearings: Precision, Durability, and High-Performance Motion Control**

In the world of precision motion and control, NSK stands as a leader in engineering high-performance bearing solutions that meet the rigorous demands of modern industrial machinery, automotive systems, and precision equipment. Among NSK’s extensive portfolio of roller bearings, **Double Row Tapered Roller Bearings** represent a critical innovation, combining superior load capacity, rigidity, and operational efficiency in a compact design. These bearings are engineered to handle **combined radial and axial loads** with exceptional stability, making them indispensable in applications where precision, durability, and high-speed performance are paramount.

### **Technical Features and Design Advantages**
NSK’s Double Row Tapered Roller Bearings are designed with precision-ground tapered rollers arranged in two rows between conical raceways. This configuration ensures optimal load distribution, reducing stress concentrations and extending service life. Key technical features include:

– **High Load Capacity**: The double-row design supports substantial radial and axial loads simultaneously, making these bearings ideal for heavy-duty applications.
– **Enhanced Rigidity and Alignment**: Precision manufacturing minimizes internal clearance, improving shaft positioning accuracy and reducing vibration—critical for high-speed operations.
– **Optimized Lubrication and Heat Resistance**: Advanced cage designs and material selections ensure efficient lubrication retention and thermal stability, even in harsh operating conditions.
– **Interchangeability and Ease of Installation**: NSK’s standardized designs allow for seamless integration into existing systems, reducing downtime during maintenance or replacement.

### **Performance Advantages**
NSK’s Double Row Tapered Roller Bearings outperform conventional bearings in several key areas:

– **Extended Service Life**: Advanced materials and heat treatment processes enhance wear resistance, reducing maintenance frequency.
– **Energy Efficiency**: Reduced friction and optimized internal geometry lower power consumption, contributing to sustainable operations.
– **Noise and Vibration Reduction**: Precision engineering ensures smooth rotation, critical for applications in sensitive environments like medical or aerospace equipment.

### **Typical Applications**
These bearings are widely used across industries where reliability under heavy or dynamic loads is essential:

– **Industrial Machinery**: Gearboxes, rolling mills, and heavy construction equipment benefit from their high load capacity and durability.
– **Automotive Systems**: Wheel hubs, transmissions, and differentials rely on their ability to manage both radial and axial forces efficiently.
– **Precision Equipment**: Machine tool spindles and robotics require the rigidity and accuracy provided by NSK’s tapered roller bearings for consistent performance.

By integrating NSK’s Double Row Tapered Roller Bearings into motion control systems, engineers can achieve **higher efficiency, longer operational life, and reduced total cost of ownership**. Whether in demanding industrial environments or high-precision applications, NSK’s bearings deliver the reliability and performance needed to keep machinery running smoothly and efficiently.

For industries that depend on precision motion, NSK’s tapered roller bearings are not just components—they are **engineered solutions for superior performance**.

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Designations Nominal Dimensions Basic Load Ratings Speeds
Limiting Speeds
d
mm
D
mm
B2
mm
C
mm
r (min.)
mm
r1 (min.)
mm
Cr
N
C0r
N
Grease
min-1
130KBE42+L
130
230
98
78.5
4
1
700000
870000
1200
105KBE52+L
105
190
115
95
3
1
710000
920000
1500
130KBE52+L
130
230
145
117.5
4
1
1050000
1480000
1200
110KBE31+L
110
180
56
50
2.5
0.6
325000
400000
1500
140KBE30+L
140
210
53
47
2.5
0.6
345000
495000
1200
110KBE031+L
110
180
70
56
2.5
0.6
420000
555000
1500
140KBE030+L
140
210
66
53
2.5
1
370000
530000
1200
110KBE42X+L
110
200
92
74
3
1
585000
695000
1400
140KBE31+L
140
225
68
61
3
1
490000
630000
1200
HR80KBE42+L
80
140
64
51.5
2.5
0.6
330000
390000
2000
110KBE52X+L
110
200
121
101
3
1
785000
1020000
1400
140KBE031+L
140
225
84
68
3
1
605000
850000
1200
HR80KBE52X+L
80
140
78
63.5
2.5
0.6
405000
505000
2000
120KBE30+L
120
180
46
41
2.5
0.6
227000
296000
1500
140KBE42+L
140
250
102
82.5
4
1
775000
970000
1100
HR85KBE42+L
85
150
70
57
2.5
0.6
385000
465000
1900
120KBE030+L
120
180
58
46
2.5
0.6
320000
450000
1500
140KBE52X+L
140
250
153
125.5
4
1
1160000
1670000
1100
HR85KBE52X+L
85
150
86
69
2.5
0.6
445000
555000
1900
120KBE31+L
120
200
62
55
2.5
0.6
385000
500000
1400