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
HR30308J
40
90
25.25
23
20
2
1.5
111000
101000
HR32308J
40
90
35.25
33
27
2
1.5
147000
145000
HR32909J
45
68
15
15
12
0.6
0.6
42500
50500
HR32009XJ
45
75
20
20
15.5
1
1
74000
83000
HR33009J
45
75
24
24
19
1
1
85000
99000
HR33109J
45
80
26
26
20.5
1.5
1.5
103000
113000
HR30209J
45
85
20.75
19
16
1.5
1.5
84000
79500
HR32209J
45
85
24.75
23
19
1.5
1.5
102000
102000
HR32209CJ
45
85
24.75
23
19
1.5
1.5
91500
95000
HR33209J
45
85
32
32
25
1.5
1.5
136000
147000
T7FC045
45
95
29
26.5
20
2.5
2.5
109000
109000
T2ED045
45
95
36
35
30
2.5
2.5
171000
174000
HR30309DJ
45
100
27.25
25
18
2
1.5
118000
109000
HR31309J
45
100
27.25
25
18
2
1.5
118000
109000
HR30309J
45
100
27.25
25
22
2
1.5
138000
127000
HR32309J
45
100
38.25
36
30
2
1.5
177000
177000
HR32910J
50
72
15
15
12
0.6
0.6
44000
54000
HR32010XJ
50
80
20
20
15.5
1
1
75500
87000
HR33010J
50
80
24
24
19
1
1
86500
104000
HR33110J
50
85
26
26
20
1.5
1.5
110000
126000
HR30210J
50
90
21.75
20
17
1.5
1.5
94000
91500
HR32210CJ
50
90
24.75
23
18
1.5
1.5
95000
102000
HR32210J
50
90
24.75
23
19
1.5
1.5
108000
109000
HR33210J
50
90
32
32
24.5
1.5
1.5
146000
165000