Fafnir® Eccentric Locking Collar Ball Bearings

**TIMKEN Ball Bearings: Precision, Durability, and Versatility for Demanding Applications**

TIMKEN is a global leader in engineered bearings and mechanical power transmission products, renowned for delivering unmatched reliability and performance across industries. Among its extensive portfolio, TIMKEN Ball Bearings—including **Insert Ball Bearings** and **Fafnir® Eccentric Locking Collar Ball Bearings**—stand out for their precision engineering, robust construction, and adaptability to high-load, high-speed applications. Designed to meet the rigorous demands of industrial machinery, automotive systems, and precision equipment, these bearings ensure smooth operation, extended service life, and reduced maintenance costs.

### **Technical Features & Performance Advantages**

**1. Insert Ball Bearings:**
TIMKEN’s Insert Ball Bearings feature a **sealed or shielded design**, protecting against contaminants while retaining lubrication for optimal performance. These bearings are housed in a **solid or split-type cast iron or pressed steel housing**, allowing for easy installation and alignment in applications where shaft deflection or misalignment is a concern. The **spherical outer diameter** compensates for minor mounting errors, reducing stress on the bearing and extending its lifespan.

Key benefits include:
– **Pre-lubricated for maintenance-free operation** in harsh environments.
– **Interchangeable designs** compatible with industry-standard housings.
– **Robust sealing options** (e.g., triple-lip seals) for enhanced protection in dusty or wet conditions.

**2. Fafnir® Eccentric Locking Collar Ball Bearings:**
A standout in TIMKEN’s lineup, the **Fafnir® series** incorporates an **eccentric locking collar mechanism**, ensuring a secure and vibration-resistant grip on the shaft without requiring additional adapters. This design simplifies installation while providing **superior resistance to slippage**, even under heavy radial and axial loads.

Performance highlights:
– **Eccentric locking collar** eliminates the need for set screws, reducing fretting and shaft damage.
– **High-carbon chromium steel construction** for exceptional wear resistance and fatigue life.
– **Wide temperature tolerance**, making them suitable for both high-heat industrial environments and low-temperature applications.

### **Typical Applications**

TIMKEN’s Insert and Fafnir® Eccentric Locking Ball Bearings are widely used in:
– **Industrial Machinery:** Conveyors, pumps, gearboxes, and agricultural equipment benefit from their ability to handle misalignment and shock loads.
– **Automotive Systems:** Found in wheel hubs, steering mechanisms, and auxiliary drives, where secure shaft mounting is critical.
– **Precision Equipment:** Packaging machines, printing presses, and robotics rely on their smooth, low-friction operation for consistent performance.

### **Why Choose TIMKEN?**
With over a century of expertise in bearing technology, TIMKEN combines **advanced materials, precision manufacturing, and rigorous testing** to deliver bearings that outperform competitors in durability and efficiency. Whether in extreme conditions or everyday industrial use, TIMKEN Ball Bearings provide **reliable, long-lasting performance**, reducing downtime and operational costs.

For applications demanding **high load capacity, easy installation, and minimal maintenance**, TIMKEN’s Insert and Fafnir® Eccentric Locking Collar Ball Bearings offer an optimal solution—engineered to keep industries moving.

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Part Number Shaft Size d Outside Diameter Total Width Static Load Rating Dynamic Load Rating Lubrication Type O.D. Type Seal Type
SMN407W
N/A
240 mm
141.29 mm
245000 N
285100 N
Non-Relubricatable
Cylindrical OD
CAD
SMN407WB-BR
N/A
240 mm
141.29 mm
245000 N
285100 N
Non-Relubricatable
Spherical OD
CAD
SMN407WS
N/A
240 mm
141.17 mm
245097 N
281127 N
Non-Relubricatable
Spherical OD
CAD
SMN407WS-BR
N/A
265 mm
141.3 mm
245000 N
280000 N
Non-Relubricatable
Cylindrical OD
CAD
SMN415W
N/A
280 mm
150.81 mm
327400 N
347400 N
Non-Relubricatable
Cylindrical OD
CAD
SMN415WB-BR
N/A
280 mm
150.81 mm
327400 N
347400 N
Non-Relubricatable
Spherical OD
CAD
SMN415WS-BR
N/A
300 mm
150.8 mm
327400 N
345000 N
Non-Relubricatable
Cylindrical OD
CAD
SMN415WS
N/A
280 mm
150.67 mm
328278 N
343847 N
Non-Relubricatable
Spherical OD
CAD
SMN403WB-BR
N/A
225 mm
139.700 mm
202700 N
250000 N
Non-Relubricatable
Spherical OD
CAD
SMN403WS
N/A
225 mm
122.13 mm
202394 N
253548 N
Non-Relubricatable
Spherical OD
CAD
E75KRRB
75 mm
130 mm
92.1 mm
44800 N
68900 N
Non-Relubricatable
Spherical OD
Shroud Seal
SMO311WS
N/A
200 mm
122.25 mm
175259 N
222411 N
Non-Relubricatable
Spherical OD
CAD
E75KRR
75 mm
130 mm
92.1 mm
44800 N
68900 N
Non-Relubricatable
Cylindrical OD
Shroud Seal
SM1311W-BR
N/A
170 mm
114.3 mm
113600 N
150000 N
Non-Relubricatable
Cylindrical OD
CAD
SM1303K
N/A
140 mm
100.01 mm
53400 N
80000 N
Non-Relubricatable
Cylindrical OD
CAD
SM1311WB-BR
N/A
170 mm
114.3 mm
113600 N
150000 N
Non-Relubricatable
Spherical OD
CAD
SM1303KB
N/A
140 mm
100.01 mm
53400 N
80000 N
Non-Relubricatable
Spherical OD
CAD
SM0311W
N/A
200 mm
122.24 mm
173700 N
224000 N
Non-Relubricatable
Cylindrical OD
CAD
SM1303KS
N/A
155 mm
100.01 mm
53400 N
80000 N
Non-Relubricatable
Cylindrical OD
CAD
SM0311WB-BR
N/A
200 mm
122.24 mm
173700 N
224000 N
Non-Relubricatable
Spherical OD
CAD