Lock-Washer

**Introduction to NSK Bearing Accessories: Lock Washers for Precision Motion and Control**

In high-performance industrial machinery, automotive systems, and precision equipment, the reliability of rotating assemblies is critical. Even the slightest movement or loosening of bearings can lead to misalignment, vibration, and premature failure—resulting in costly downtime. To address this challenge, NSK offers precision-engineered **Lock Washers**, a key bearing accessory designed to secure bearings firmly in place, ensuring stable operation under demanding conditions.

### **Technical Features & Design Advantages**
NSK’s **Lock Washers** are manufactured with exacting tolerances to provide a secure, vibration-resistant locking mechanism for bearings, particularly in applications with high rotational speeds or dynamic loads. Key features include:

– **High-Strength Materials**: Constructed from hardened steel or specialty alloys, NSK Lock Washers resist deformation and maintain clamping force even under extreme mechanical stress.
– **Precision Engineering**: The washers feature optimized tooth profiles and surface treatments (such as phosphate or zinc coatings) to enhance grip and prevent fretting corrosion.
– **Positive Locking Mechanism**: The washer’s serrated teeth bite into the bearing’s shoulder and mating surface, preventing rotation or axial movement caused by vibration or torque fluctuations.
– **Easy Installation**: Designed for seamless integration with NSK bearings, the lock washers simplify assembly while eliminating the need for additional adhesives or complex retention systems.

### **Performance Benefits**
By integrating NSK Lock Washers into bearing assemblies, engineers achieve:

– **Enhanced Bearing Stability**: Prevents loosening in high-vibration environments (e.g., gearboxes, motors, or drivetrains).
– **Extended Service Life**: Reduces wear caused by micro-movements, prolonging the lifespan of both bearings and adjacent components.
– **Improved Safety**: Mitigates the risk of catastrophic failures in critical applications such as aerospace actuators, robotics, or automotive transmissions.
– **Reduced Maintenance**: Minimizes the need for frequent retightening, lowering operational costs.

### **Typical Applications**
NSK Lock Washers are widely used in precision motion systems where reliability is non-negotiable:

– **Industrial Machinery**: Secures spindle bearings in CNC machines, pumps, and compressors.
– **Automotive Systems**: Locks differential bearings, wheel hubs, and turbocharger assemblies.
– **Precision Equipment**: Ensures stability in medical imaging devices, robotics, and semiconductor manufacturing tools.

For engineers seeking uncompromising bearing retention, NSK’s Lock Washers deliver a robust, cost-effective solution backed by decades of motion control expertise. By combining advanced materials with precision design, NSK ensures optimal performance in the most demanding applications.

*For further technical specifications or application support, consult NSK’s engineering team or product catalog.*

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Designations Shaft diameter (Reference) Basic Dimensions
d
mm
d3
mm
d5
mm
B1
mm
AW36X
180
180
242
2.5
AWL38
190
190
230
2.5
AWL38X
190
190
230
2.5
AW38
190
190
252
2.5
AW38X
190
190
252
2.5
AWL40
200
200
250
2.5
AWL40X
200
200
250
2.5
AW40
200
200
262
2.5
AW40X
200
200
262
2.5
AW36
180
180
242
2.5
AW25X
125
125
170
2
AW30X
150
150
205
2
AWL26
130
130
165
2
AW31
155
155
212
2.5
AWL26X
130
130
165
2
AW31X
155
155
212
2.5
AW26
130
130
175
2
AWL32
160
160
200
2.5
AW26X
130
130
175
2
AWL32X
160
160
200
2.5