Adapter

**Introduction to NSK Bearing Accessories: Precision Adapters for Optimal Motion Control**

In the world of precision motion and control, every component plays a critical role in ensuring efficiency, reliability, and longevity. NSK, a global leader in bearing and motion solutions, offers a range of high-performance **bearing accessories**, including precision **adapter sleeves**, designed to enhance the functionality and ease of installation of bearings in demanding applications. NSK’s **Adapter Sleeves** provide a secure and precise mounting solution for bearings with tapered bores, ensuring optimal alignment, reduced vibration, and extended service life in industrial machinery, automotive systems, and precision equipment.

### **Technical Features & Design Advantages**
NSK’s **Adapter Sleeves** are engineered to simplify the installation and adjustment of bearings while maintaining exceptional mechanical stability. Key features include:

– **Precision Tapered Fit**: The sleeves feature a finely machined taper that ensures a tight, concentric fit between the bearing and shaft, minimizing misalignment and preventing slippage under high loads.
– **High-Strength Materials**: Manufactured from high-quality steel, NSK adapters offer superior durability, resistance to wear, and the ability to withstand harsh operating conditions, including heavy radial and axial loads.
– **Easy Installation & Adjustment**: The design includes a threaded end with a lock nut and washer, allowing for quick mounting and fine-tuning of bearing preload, reducing downtime during assembly and maintenance.
– **Vibration Damping**: By ensuring a rigid connection between the bearing and shaft, NSK adapters help reduce vibration and noise, critical for high-speed applications such as electric motors and machine tool spindles.

### **Performance Benefits for Industrial & Automotive Applications**
NSK’s **Adapter Sleeves** enhance system performance across multiple industries by improving bearing stability and load distribution. Key advantages include:

– **Extended Bearing Life**: Proper alignment and secure mounting reduce uneven stress on bearings, preventing premature wear and failure.
– **Enhanced Load Capacity**: The tapered design distributes loads evenly, making these adapters ideal for heavy-duty machinery, conveyor systems, and gearboxes.
– **Versatility**: Compatible with a wide range of bearing types, including spherical roller bearings and ball bearings, NSK adapters are used in applications from wind turbines to automotive transmissions.

### **Typical Applications**
NSK’s precision adapters are widely used in:
– **Industrial Machinery**: Machine tool spindles, pumps, and compressors where precise bearing alignment is critical.
– **Automotive Systems**: Wheel hubs, drivetrains, and electric vehicle motors requiring high load capacity and vibration resistance.
– **Precision Equipment**: Robotics, medical devices, and aerospace components where reliability and minimal maintenance are essential.

By integrating NSK’s **Adapter Sleeves** into motion control systems, engineers and maintenance teams achieve superior performance, reduced maintenance costs, and longer operational lifespans—key factors in today’s high-demand industrial environments.

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Designations Dimensions Associated products
d1
mm
d
mm
B1
mm
Adapter Sleeve Nut Stopper Lock-Washer
H3164
300
320
226
A3164
AN64
AL64
H3264
300
320
258
A3264
AN64
AL64
H3968
320
340
144
A3968
AN68
AL68
H3068
320
340
187
A3068
ANL68
ALL64
H3168
320
340
254
A3168
AN68
AL68
H3268
320
340
288
A3268
AN68
AL68
H3972
340
360
144
A3972
AN72
AL68
H3072
340
360
188
A3072
ANL72
ALL72
H3172
340
360
259
A3172
AN72
AL68
H3272
340
360
299
A3272
AN72
AL68
H3976
360
380
164
A3976
AN76
AL76
H3076
360
380
193
A3076
ANL76
ALL76
H3176
360
380
264
A3176
AN76
AL76
H3276
360
380
310
A3276
AN76
AL76
H3980
380
400
168
A3980
AN80
AL80
H2317X
75
85
82
A2317X
AN17
AW17X
H218X
80
90
52
A218X
AN18
AW18X
H318X
80
90
65
A318X
AN18
AW18X
H2318X
80
90
86
A2318X
AN18
AW18X
H219X
85
95
55
A219X
AN19
AW19X
H319X
85
95
68
A319X
AN19
AW19X
H2319X
85
95
90
A2319X
AN19
AW19X
H220X
90
100
58
A220X
AN20
AW20X
H320X
90
100
71
A320X
AN20
AW20X