Ball Bearings

**Introduction to NSK Bearing Units & Ball Bearings: Precision Motion and Control Solutions**

NSK is a global leader in precision motion and control technologies, delivering high-performance bearing solutions that enhance efficiency, reliability, and longevity in demanding industrial and automotive applications. Among its extensive product portfolio, **NSK Bearing Units and Ball Bearings** stand out for their advanced engineering, superior load capacity, and exceptional durability. Designed to meet the rigorous demands of modern machinery, these components play a critical role in minimizing friction, reducing energy consumption, and ensuring smooth rotational motion in everything from heavy industrial equipment to precision automotive systems.

### **Technical Features & Performance Advantages**

NSK Bearing Units integrate high-quality ball bearings with robust housings, offering a complete, ready-to-install solution that simplifies maintenance and improves operational reliability. Key features include:

– **Precision-Grade Ball Bearings**: Manufactured with high-grade steel and advanced heat treatment processes, NSK ball bearings deliver ultra-low friction, high-speed capability, and extended service life even under heavy radial and axial loads.
– **Sealed & Lubricated Designs**: Many NSK bearing units come with integrated seals and pre-lubrication, preventing contamination and reducing the need for frequent maintenance—ideal for harsh environments such as food processing, mining, or chemical industries.
– **Corrosion-Resistant Materials**: Options with stainless steel bearings or special coatings ensure resistance to moisture, chemicals, and extreme temperatures, making them suitable for marine, pharmaceutical, and cleanroom applications.
– **Plug-and-Play Installation**: Pre-aligned bearing units with standardized mounting dimensions (e.g., PNS, SN, or UCP series) allow for quick replacement and reduced downtime in conveyor systems, pumps, and gearboxes.

### **Typical Applications Across Industries**

NSK Bearing Units and Ball Bearings are widely used in sectors where precision, durability, and energy efficiency are paramount:

– **Industrial Machinery**: Conveyors, electric motors, and material handling systems benefit from NSK’s low-maintenance bearing units, which ensure smooth operation under continuous loads.
– **Automotive Systems**: From wheel hubs to transmission components, NSK’s high-speed ball bearings enhance vehicle performance while reducing noise and vibration.
– **Precision Equipment**: Robotics, medical devices, and semiconductor manufacturing rely on NSK’s ultra-precise bearings for repeatable motion control and minimal backlash.
– **Heavy-Duty Applications**: Steel mills, wind turbines, and construction machinery utilize NSK’s reinforced bearing units to withstand shock loads and harsh operating conditions.

By combining cutting-edge materials, precision manufacturing, and innovative sealing technologies, NSK Bearing Units and Ball Bearings set the benchmark for reliability in motion control. Whether optimizing production lines or enhancing automotive performance, NSK’s solutions ensure maximum uptime, reduced energy consumption, and long-term cost savings—proving why they are the preferred choice for engineers worldwide.

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Designations Nominal Dimensions Basic Load Ratings
d
mm
D
mm
B,B4
mm
B1
mm
C
mm
Cr
kN
C0r
kN
AEL205
25
52
21.5
31
15
14
7.85
UC305D1
25
62
38
20
21.2
10.9
UELS206LN
30
62
36.5
48.4
19
19.5
11.3
AELS205N
25
52
21.5
31
15
14
7.85
UCS305
25
62
38
20
21.2
10.9
UC206D1
30
62
38.1
19
19.5
11.3
UK205D1
25
52
23
35
17
14
7.85
UCX05D1
25
62
38.1
19
19.5
11.3
UCS206LN
30
62
38.1
19
19.5
11.3
UKS205LN
25
52
23
35
17
14
7.85
UC205-100D1
25.4
52
34.1
17
14
7.85
F-UC206D1/LP99
30
62
38.1
19
15
11.3
UC202D1
15
47
31
17
12.8
6.65
ASS204N
20
47
25
14
12.8
6.65
CS200LLU
10
30
9
5.1
2.39
UCS202LN
15
47
31
17
12.8
6.65
UC204D1
20
47
31
17
12.8
6.65
CS201LLU
12
32
10
6.1
2.75
UC202-010D1
15.875
47
31
17
12.8
6.65
UCS204LN
20
47
31
17
12.8
6.65