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
HR32217J
85
150
38.5
36
30
2.5
2
259000
277000
HR33011J
55
90
27
27
21
1.5
1.5
112000
138000
HR33111J
55
95
30
30
23
1.5
1.5
138000
158000
HR30211J
55
100
22.75
21
18
2
1.5
116000
113000
HR32211J
55
100
26.75
25
21
2
1.5
135000
137000
HR33211J
55
100
35
35
27
2
1.5
174000
193000
T7FC055
55
115
34
31
23.5
3
3
155000
164000
HR30311DJ
55
120
31.5
29
21
2.5
2
161000
153000
HR31311J
55
120
31.5
29
21
2.5
2
161000
153000
HR30311J
55
120
31.5
29
25
2.5
2
184000
171000
HR32311CJ
55
120
45.5
43
35
2.5
2
240000
262000
HR32311J
55
120
45.5
43
35
2.5
2
251000
258000
HR32912J
60
85
17
17
14
1
1
60000
84500
HR32012XJ
60
95
23
23
17.5
1.5
1.5
105000
127000
HR33012J
60
95
27
27
21
1.5
1.5
118000
150000
HR33112J
60
100
30
30
23
1.5
1.5
142000
166000
HR30212J
60
110
23.75
22
19
2
1.5
127000
123000
HR32212J
60
110
29.75
28
24
2
1.5
161000
167000
HR33212J
60
110
38
38
29
2
1.5
204000
231000
T7FC060
60
125
37
33.5
26
3
3
186000
197000
HR31312J
60
130
33.5
31
22
3
2.5
186000
177000
HR30312DJ
60
130
33.5
31
22
3
2.5
186000
177000
HR30312J
60
130
33.5
31
26
3
2.5
214000
201000
32312C
60
130
48.5
46
35
3
2.5
241000
249000