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
HR32938J
190
260
45
45
34
2.5
2
445000
715000
T4CB120
120
170
27
25
19.5
3
3
188000
243000
30326
130
280
63.75
58
49
5
4
675000
675000
HR30221J
105
190
39
36
30
3
2.5
345000
365000
HR32024XJ
120
180
38
38
29
2.5
2
297000
405000
HR30326J
130
280
63.75
58
49
5
4
795000
820000
HR32221J
105
190
53
50
43
3
2.5
445000
510000
HR33024J
120
180
48
48
38
2.5
2
370000
540000
HR31326J
130
280
72
66
44
5
4
770000
820000
HR30321J
105
225
53.5
49
41
4
3
560000
565000
HR33124J
120
200
62
62
48
2.5
2
565000
755000
32326
130
280
98.75
93
78
5
4
1020000
1150000
HR31321J
105
225
58
53
36
4
3
510000
540000
HR30224J
120
215
43.5
40
34
3
2.5
410000
450000
HR32928J
140
190
32
32
25
2
1.5
253000
390000
HR32321J
105
225
81.5
77
63
4
3
820000
925000
HR32224J
120
215
61.5
58
50
3
2.5
540000
635000
HR32028XJ
140
210
45
45
34
2.5
2
400000
555000
HR32922J
110
150
25
25
20
1.5
1.5
151000
224000
HR30324J
120
260
59.5
55
46
4
3
660000
655000
HR33028J
140
210
56
56
44
2.5
2
505000
770000
HR32022XJ
110
170
38
38
29
2.5
2
290000
390000
HR31324J
120
260
68
62
42
4
3
685000
730000
HR30228J
140
250
45.75
42
36
4
3
480000
515000