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
CM-UKF313D1
60
208
166
65
92.5
60
UK313D1
F313D1
UKFS313D1
60
208
166
65
92.5
60
UK313D1
FS313D1
C-UKFS313D1
60
208
166
65
92.5
60
UK313D1
FS313D1
CM-UKFS313D1
60
208
166
65
92.5
60
UK313D1
FS313D1
UCF213D1
65
187
149
65.1
57.5
40
UC213D1
F213D1
Z-UCF213D1
65
187
149
65.1
57.5
40
UC213D1
F213D1
ZM-UCF213D1
65
187
149
65.1
57.5
40
UC213D1
F213D1
C-UCF213D1
65
187
149
65.1
57.5
40
UC213D1
F213D1
CM-UCF213D1
65
187
149
65.1
57.5
40
UC213D1
F213D1
UCFX13D1
65
187
149
74.6
62
44
UCX13D1
FX13D1
C-UCFX13D1
65
187
149
74.6
62
44
UCX13D1
FX13D1
CM-UCFX13D1
65
187
149
74.6
62
44
UCX13D1
FX13D1
UKFX15D1
65
197
152
73
72.5
53
UKX15D1
FX15D1
C-UKFX15D1
65
197
152
73
72.5
53
UKX15D1
FX15D1
CM-UKFX15D1
65
197
152
73
72.5
53
UKX15D1
FX15D1
UKF215D1
65
200
159
73
66
49.5
UK215D1
F215D1
C-UKF215D1
65
200
159
73
66
49.5
UK215D1
F215D1
UKFX11D1
50
175
143
59
52.5
36
UKX11D1
FX11D1
C-UKFX11D1
50
175
143
59
52.5
36
UKX11D1
FX11D1
CM-UKFX11D1
50
175
143
59
52.5
36
UKX11D1
FX11D1
UKF311D1
50
185
140
59
71.5
45
UK311D1
F311D1
C-UKF311D1
50
185
140
59
71.5
45
UK311D1
F311D1
CM-UKF311D1
50
185
140
59
71.5
45
UK311D1
F311D1
UKFS311D1
50
185
140
59
71.5
45
UK311D1
FS311D1