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
UKFX20D1
90
268
211
97
133
105
UKX20D1
FX20D1
UCFS317D1
85
260
204
96
133
97
UC317D1
FS317D1
C-UKFX20D1
90
268
211
97
133
105
UKX20D1
FX20D1
C-UCFS317D1
85
260
204
96
133
97
UC317D1
FS317D1
CM-UKFX20D1
90
268
211
97
133
105
UKX20D1
FX20D1
C-UKF318D1
80
280
216
86
143
107
UK318D1
F318D1
CM-UCFS317D1
85
260
204
96
133
97
UC317D1
FS317D1
UCF318D1
90
280
216
96
143
107
UC318D1
F318D1
CM-UKF318D1
80
280
216
86
143
107
UK318D1
F318D1
UKF319D1
85
290
228
90
153
119
UK319D1
F319D1
C-UCF318D1
90
280
216
96
143
107
UC318D1
F318D1
UKFS318D1
80
280
216
86
143
107
UK318D1
FS318D1
C-UKF319D1
85
290
228
90
153
119
UK319D1
F319D1
CM-UCF318D1
90
280
216
96
143
107
UC318D1
F318D1
C-UKFS318D1
80
280
216
86
143
107
UK318D1
FS318D1
CM-UKF319D1
85
290
228
90
153
119
UK319D1
F319D1
UCFS318D1
90
280
216
96
143
107
UC318D1
FS318D1
CM-UKFS318D1
80
280
216
86
143
107
UK318D1
FS318D1
UKFS319D1
85
290
228
90
153
119
UK319D1
FS319D1
C-UCFS318D1
90
280
216
96
143
107
UC318D1
FS318D1