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
UC307-107D1
36.512
80
48
25
33.5
19.1
UCS306
30
72
43
23
26.7
15
ASS207N
35
72
34
17
25.7
15.3
UC208-108D1
38.1
80
49.2
21
29.1
17.8
UC206-103D1
30.162
62
38.1
19
19.5
11.3
UEL207D1
35
72
37.6
51.1
20
25.7
15.3
UC308-108D1
38.1
90
52
27
40.5
24
UC306-103D1
30.162
72
43
23
26.7
15
UELS207LN
35
72
37.6
51.1
20
25.7
15.3
UC206-104D1
31.75
62
38.1
19
19.5
11.3
UC207D1
35
72
42.9
20
25.7
15.3
UC207-104D1
31.75
72
42.9
20
25.7
15.3
UCS207LN
35
72
42.9
20
25.7
15.3
UC307-104D1
31.75
80
48
25
33.5
19.1
F-UC207D1/LP99
35
72
42.9
20
19.7
15.3
UC207-105D1
33.338
72
42.9
20
25.7
15.3
UKX07D1
35
80
31
43
21
29.1
17.8
UC307-105D1
33.338
80
48
25
33.5
19.1
UK307D1
35
80
33
43
25
33.5
19.1
UC207-106D1
34.925
72
42.9
20
25.7
15.3