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
UELS208LN
40
80
42.8
56.3
21
29.1
17.8
UC209-112D1
44.45
85
49.2
22
32.5
20.4
UC208D1
40
80
49.2
21
29.1
17.8
UC309-112D1
44.45
100
57
29
53
32
UCS208LN
40
80
49.2
21
29.1
17.8
UK209D1
45
85
31
50
22
32.5
20.4
F-UC208D1/LP99
40
80
49.2
21
22.4
17.8
UKS209LN
45
85
31
50
22
32.5
20.4
UKX08D1
40
85
31
46
22
32.5
20.4
UEL209D1
45
85
42.8
56.3
22
32.5
20.4
UCX08D1
40
85
49.2
22
32.5
20.4
UELS209LN
45
85
42.8
56.3
22
32.5
20.4
UK308D1
40
90
34
46
27
40.5
24
UC209D1
45
85
49.2
22
32.5
20.4
UC208-109D1
39.688
80
49.2
21
29.1
17.8
UKS308
40
90
34
46
27
40.5
24
UCS209LN
45
85
49.2
22
32.5
20.4
CS208LLU
40
80
18
29.1
17.8
UEL308D1
40
90
41.3
57.1
27
40.5
24
F-UC209D1/LP99
45
85
49.2
22
25.2
20.4