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
HR32218J
90
160
42.5
40
34
2.5
2
315000
350000
HR32920J
100
140
25
25
20
1.5
1.5
144000
205000
HR31318J
90
190
46.5
43
30
4
3
325000
315000
T4CB100
100
145
24
22.5
17.5
3
3
139000
163000
HR30318DJ
90
190
46.5
43
30
4
3
325000
315000
HR32020XJ
100
150
32
32
24
2
1.5
216000
294000
HR30318J
90
190
46.5
43
36
4
3
425000
425000
HR33020J
100
150
39
39
32.5
2
1.5
290000
405000
HR32318J
90
190
67.5
64
53
4
3
555000
590000
HR33120J
100
165
52
52
40
2.5
2
390000
515000
HR32919J
95
130
23
23
18
1.5
1.5
120000
172000
HR30220J
100
180
37
34
29
3
2.5
315000
330000
HR33217J
85
150
49
49
37
2.5
2
345000
415000
HR32019XJ
95
145
32
32
24
2
1.5
212000
283000
HR32220J
100
180
49
46
39
3
2.5
400000
450000
HR30317DJ
85
180
44.5
41
28
4
3
320000
315000
HR33019J
95
145
39
39
32.5
2
1.5
284000
390000
HR33220J
100
180
63
63
48
3
2.5
505000
635000
HR31317J
85
180
44.5
41
28
4
3
320000
315000
T2ED095
95
160
46
46
38
3
3
350000
445000
HR30320J
100
215
51.5
47
39
4
3
520000
525000
HR30317J
85
180
44.5
41
34
4
3
380000
375000
HR30219J
95
170
34.5
32
27
3
2.5
275000
286000
HR31320J
100
215
56.5
51
35
4
3
475000
505000