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
HR32038XJ
190
290
64
64
48
3
2.5
800000
1170000
HR30221J
105
190
39
36
30
3
2.5
345000
365000
HR32221J
105
190
53
50
43
3
2.5
445000
510000
HR30321J
105
225
53.5
49
41
4
3
560000
565000
HR31321J
105
225
58
53
36
4
3
510000
540000
HR32321J
105
225
81.5
77
63
4
3
820000
925000
HR32922J
110
150
25
25
20
1.5
1.5
151000
224000
HR32022XJ
110
170
38
38
29
2.5
2
290000
390000
HR33022J
110
170
47
47
37
2.5
2
360000
515000
HR33122J
110
180
56
56
43
2.5
2
450000
610000
HR30222J
110
200
41
38
32
3
2.5
390000
420000
HR32222J
110
200
56
53
46
3
2.5
490000
565000
HR30322J
110
240
54.5
50
42
4
3
595000
595000
HR31322J
110
240
63
57
38
4
3
580000
605000
HR32322J
110
240
84.5
80
65
4
3
830000
910000
HR32924J
120
165
29
29
23
1.5
1.5
198000
291000
T4CB120
120
170
27
25
19.5
3
3
188000
243000
HR32024XJ
120
180
38
38
29
2.5
2
297000
405000
HR33024J
120
180
48
48
38
2.5
2
370000
540000
HR33124J
120
200
62
62
48
2.5
2
565000
755000
HR30224J
120
215
43.5
40
34
3
2.5
410000
450000
HR32224J
120
215
61.5
58
50
3
2.5
540000
635000
HR30324J
120
260
59.5
55
46
4
3
660000
655000
HR31324J
120
260
68
62
42
4
3
685000
730000