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
HR32206J
30
62
21.25
20
17
1
1
64000
60000
HR32907J
35
55
14
14
11.5
0.6
0.6
33500
39000
HR33108J
40
75
26
26
20.5
1.5
1.5
96500
101000
HR33206J
30
62
25
25
19.5
1
1
82000
79500
HR32007XJ
35
62
18
18
14
1
1
53000
55500
HR31306J
30
72
20.75
19
14
1.5
1.5
60500
52500
HR33007J
35
62
21
21
17
1
1
60000
65000
HR30306C
30
72
20.75
19
14
1.5
1.5
70000
55500
HR30207C
35
72
18.25
17
13
1.5
1.5
57500
54500
HR30306DJ
30
72
20.75
19
14
1.5
1.5
60500
52500
HR30207J
35
72
18.25
17
15
1.5
1.5
66500
59500
HR30306J
30
72
20.75
19
16
1.5
1.5
73000
60000
HR32207C
35
72
24.25
23
18
1.5
1.5
74500
71500
HR32306J
30
72
28.75
27
23
1.5
1.5
98000
88500
HR32207J
35
72
24.25
23
19
1.5
1.5
86500
83500
HR32306CJ
30
72
28.75
27
23
1.5
1.5
93500
86500
HR33207J
35
72
28
28
22
1.5
1.5
107000
108000
HR32004XJ
20
42
15
15
12
0.6
0.6
30500
27400
HR33005J
25
47
17
17
14
0.6
0.6
38000
38000
HR303/28C
28
68
19.75
18
14
1.5
1.5
60500
50500