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
HR30315DJ
75
160
40
37
26
3
2.5
259000
251000
HR31315J
75
160
40
37
26
3
2.5
259000
251000
HR30315J
75
160
40
37
31
3
2.5
310000
300000
32315CA
75
160
58
55
43
3
2.5
385000
420000
HR32315J
75
160
58
55
45
3
2.5
420000
445000
HR32916J
80
110
20
20
16
1
1
92000
128000
HR32016XJ
80
125
29
29
22
1.5
1.5
173000
222000
HR33016J
80
125
36
36
29.5
1.5
1.5
211000
282000
HR33116J
80
130
37
37
29
2
1.5
229000
289000
30216CA
80
140
28.25
26
20
2.5
2
181000
190000
HR30216J
80
140
28.25
26
22
2.5
2
193000
195000
HR32216J
80
140
35.25
33
28
2.5
2
237000
254000
HR33216J
80
140
46
46
35
2.5
2
315000
385000
HR30316DJ
80
170
42.5
39
27
3
2.5
290000
283000
HR31316J
80
170
42.5
39
27
3
2.5
290000
283000
HR30316J
80
170
42.5
39
33
3
2.5
340000
330000
HR32316J
80
170
61.5
58
48
3
2.5
470000
505000
HR32316CJ
80
170
61.5
58
48
3
2.5
450000
530000
HR32917J
85
120
23
23
18
1.5
1.5
115000
157000
HR32017XJ
85
130
29
29
22
1.5
1.5
176000
231000
HR33017J
85
130
36
36
29.5
1.5
1.5
221000
305000
HR33117J
85
140
41
41
32
2.5
2
283000
365000
30217CA
85
150
30.5
28
22
2.5
2
211000
226000
HR30217J
85
150
30.5
28
24
2.5
2
226000
233000