Metric Series Tapered Roller Bearings

**Introduction to NSK’s Metric Series Tapered Roller Bearings: Precision, Durability, and Performance**

In the demanding world of industrial machinery, automotive systems, and precision equipment, the reliability and efficiency of rotating components are critical. NSK’s **Metric Series Tapered Roller Bearings** stand at the forefront of precision motion and control technologies, delivering exceptional load capacity, rigidity, and longevity in high-performance applications. Engineered with advanced materials and precision manufacturing techniques, these bearings are designed to handle combined radial and axial loads while maintaining smooth operation under extreme conditions.

### **Technical Features and Design Excellence**
NSK’s Metric Series Tapered Roller Bearings are meticulously crafted to meet the stringent demands of modern industrial and automotive applications. Key features include:

– **Optimized Roller and Raceway Geometry**: The tapered design ensures uniform stress distribution, reducing edge loading and extending service life.
– **High-Grade Materials**: Manufactured from premium steel alloys with advanced heat treatment processes, these bearings offer superior wear resistance and fatigue strength.
– **Precision Ground Surfaces**: Ultra-smooth raceways and rollers minimize friction, ensuring efficient power transmission and reduced energy loss.
– **Robust Cage Designs**: Options include pressed steel, machined brass, or polymer cages, each selected for optimal performance in specific operating environments (e.g., high speeds, corrosive conditions).
– **Sealing and Lubrication Options**: Configurations with integrated seals or shields protect against contamination, while specialized grease formulations enhance performance in high-temperature or high-speed applications.

### **Performance Advantages**
NSK’s tapered roller bearings excel in applications where reliability and precision are non-negotiable:

– **High Load Capacity**: The tapered geometry allows for simultaneous handling of heavy radial and thrust loads, making them ideal for gearboxes, wheel hubs, and heavy machinery.
– **Enhanced Rigidity and Stability**: Precision alignment ensures minimal deflection under load, critical for applications like machine tool spindles and industrial drivetrains.
– **Extended Service Life**: Advanced fatigue-resistant materials and optimized lubrication systems reduce maintenance intervals and downtime.
– **Energy Efficiency**: Low friction design contributes to reduced power consumption, aligning with modern sustainability goals.

### **Typical Applications**
NSK’s Metric Series Tapered Roller Bearings are widely used across industries, including:

– **Automotive Systems**: Wheel bearings, differential assemblies, and transmission systems benefit from their durability and load-handling capabilities.
– **Industrial Machinery**: Conveyors, crushers, and mining equipment rely on these bearings for their ability to withstand shock loads and harsh environments.
– **Precision Equipment**: Machine tools, robotics, and aerospace actuators demand the high rigidity and accuracy that NSK’s tapered roller bearings provide.

By combining cutting-edge engineering with decades of expertise, NSK ensures that its Metric Series Tapered Roller Bearings deliver unmatched performance, reliability, and efficiency—making them the preferred choice for engineers and manufacturers worldwide. Whether in high-speed automotive drivetrains or heavy industrial gearboxes, these bearings are built to excel under pressure while maintaining precision and longevity.

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Designations Nominal Dimensions Basic Load Ratings
d
mm
D
mm
T
mm
B
mm
C
mm
Cone r (min.)
mm
Cup r (min.)
mm
Cr
N
C0r
N
HR32312J
60
130
48.5
46
37
3
2.5
286000
295000
HR32913J
65
90
17
17
14
1
1
60000
86500
HR32013XJ
65
100
23
23
17.5
1.5
1.5
106000
132000
HR33013J
65
100
27
27
21
1.5
1.5
120000
156000
HR33113J
65
110
34
34
26.5
1.5
1.5
182000
218000
HR30213J
65
120
24.75
23
20
2
1.5
151000
151000
HR32213J
65
120
32.75
31
27
2
1.5
193000
202000
HR33213J
65
120
41
41
32
2
1.5
249000
282000
HR30313DJ
65
140
36
33
23
3
2.5
213000
205000
HR31313J
65
140
36
33
23
3
2.5
213000
205000
HR30313J
65
140
36
33
28
3
2.5
245000
233000
HR32313J
65
140
51
48
39
3
2.5
330000
340000
HR32914J
70
100
20
20
16
1
1
86000
113000
HR32014XJ
70
110
25
25
19
1.5
1.5
128000
158000
HR33014J
70
110
31
31
25.5
1.5
1.5
156000
204000
HR33114J
70
120
37
37
29
2
1.5
218000
262000
HR30214J
70
125
26.25
24
21
2
1.5
163000
163000
HR30208J
40
80
19.75
18
16
1.5
1.5
78000
70000
HR32208CJ
40
80
24.75
23
19
1.5
1.5
91000
90500
HR32208J
40
80
24.75
23
19
1.5
1.5
95000
90500
HR33208J
40
80
32
32
25
1.5
1.5
131000
137000
HR31308J
40
90
25.25
23
17
2
1.5
98000
89500
HR30308DJ
40
90
25.25
23
17
2
1.5
98000
89500
HR30308C
40
90
25.25
23
18
2
1.5
104000
93500