Square Flanged Units

**Introduction to NSK Bearing Units: Flanged Ball Bearing Units (Square Flanged Units)**

NSK’s **Flanged Ball Bearing Units (Square Flanged Units)** represent a robust and precision-engineered solution for applications demanding reliable rotational motion, high load capacity, and ease of installation. Designed for industrial machinery, automotive systems, and precision equipment, these bearing units combine NSK’s advanced bearing technology with a durable housing design to deliver exceptional performance in harsh operating environments.

### **Technical Features & Design Advantages**
The **Square Flanged Units** feature a compact, integrally cast housing with a square flange for secure mounting, ensuring stability and precise alignment in confined spaces. Key technical highlights include:

– **High-Performance Bearings**: Equipped with deep-groove ball bearings manufactured to NSK’s exacting standards, these units offer low friction, high-speed capability, and extended service life.
– **Robust Housing**: The housing is typically made from high-strength cast iron or pressed steel, providing rigidity and resistance to shock loads, vibration, and contamination.
– **Sealing Solutions**: Advanced sealing options (e.g., rubber seals or metal shields) protect against dust, moisture, and debris, enhancing reliability in demanding conditions.
– **Pre-Applied Lubrication**: Factory-lubricated with high-quality grease, reducing maintenance requirements and ensuring smooth operation from installation.
– **Easy Mounting**: The square flange design simplifies alignment and fastening, while the standardized dimensions (e.g., ISO or JIS compliance) ensure interchangeability.

### **Performance Benefits**
NSK’s Square Flanged Bearing Units excel in applications where durability, precision, and efficiency are critical:

– **High Load Capacity**: Optimized internal geometry supports radial and moderate axial loads, making them ideal for conveyor systems, gearboxes, and agricultural machinery.
– **Energy Efficiency**: Low torque and friction reduce power consumption, contributing to sustainable operations.
– **Reduced Downtime**: The sealed, long-life design minimizes wear and contamination-related failures, lowering total cost of ownership.

### **Typical Applications**
These units are widely used across industries, including:
– **Industrial Machinery**: Conveyors, pumps, fans, and material handling systems.
– **Automotive Systems**: Auxiliary drives, tensioners, and transmission components.
– **Precision Equipment**: Packaging machines, printing rollers, and food processing lines.

By integrating **NSK’s Square Flanged Bearing Units**, engineers can achieve reliable, maintenance-free motion control with the assurance of NSK’s global reputation for precision and durability. Whether in high-load industrial settings or precision-critical automation, these units deliver consistent performance under pressure.

For specialized requirements, NSK offers customization options, including material variants, sealing upgrades, and corrosion-resistant coatings—ensuring optimal performance for every application.

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Designations Nominal Dimensions Basic Load Ratings Included products
d
mm
L
mm
J
mm
B,B1,B2
mm
Cr
kN
C0r
kN
Bearing Housing
Z-UKF211D1
50
162
130
59
43.5
29.2
UK211D1
F211D1
UELFU208D1
40
131
101.5
56.3
29.1
17.8
UEL208D1
FU208D1
C-UCFS308D1
40
150
112
52
40.5
24
UC308D1
FS308D1
CM-UCFX09D1
45
143
111
51.6
35
23.2
UCX09D1
FX09D1
UCFX08D1
40
137
105
49.2
32.5
20.4
UCX08D1
FX08D1
CM-UCFS308D1
40
150
112
52
40.5
24
UC308D1
FS308D1
C-UCFX08D1
40
137
105
49.2
32.5
20.4
UCX08D1
FX08D1
UKF309D1
40
160
125
50
53
32
UK309D1
F309D1
CM-UCFX08D1
40
137
105
49.2
32.5
20.4
UCX08D1
FX08D1
C-UKF309D1
40
160
125
50
53
32
UK309D1
F309D1
UKF209D1
40
137
105
50
32.5
20.4
UK209D1
F209D1
CM-UKF309D1
40
160
125
50
53
32
UK309D1
F309D1
Z-UKF209D1
40
137
105
50
32.5
20.4
UK209D1
F209D1
UKFS309D1
40
160
125
50
53
32
UK309D1
FS309D1
ZM-UKF209D1
40
137
105
50
32.5
20.4
UK209D1
F209D1
C-UKFS309D1
40
160
125
50
53
32
UK309D1
FS309D1
C-UKF209D1
40
137
105
50
32.5
20.4
UK209D1
F209D1
CM-UKFS309D1
40
160
125
50
53
32
UK309D1
FS309D1
CM-UKF209D1
40
137
105
50
32.5
20.4
UK209D1
F209D1
UCF209D1
45
137
105
49.2
32.5
20.4
UC209D1
F209D1
C-UKFS308D1
35
150
112
46
40.5
24
UK308D1
FS308D1
UKFX09D1
40
143
111
50
35
23.2
UKX09D1
FX09D1
Z-UCF209D1
45
137
105
49.2
32.5
20.4
UC209D1
F209D1
CM-UKFS308D1
35
150
112
46
40.5
24
UK308D1
FS308D1