Machined-Ring Needle Roller Bearings – Separable Type w/ Inner Ring

NTN Product Introduction

**NTN Machined Ring Needle Roller Bearings (Separable Type with Inner Ring): Precision and Durability for Demanding Applications**

NTN Corporation, a global leader in bearing technology, offers high-performance **Machined Ring Needle Roller Bearings (Separable Type with Inner Ring)** designed to deliver exceptional load capacity, compact design efficiency, and reliable operation in demanding industrial and automotive applications. These precision-engineered bearings are optimized for applications where space constraints, high radial loads, and smooth rotational performance are critical.

### **Technical Features & Design Advantages**
NTN’s separable machined ring needle roller bearings feature a robust construction with a hardened and ground **inner ring**, ensuring precise alignment and extended service life. Key design and performance benefits include:

– **High Load Capacity:** The use of needle rollers with a large number of rolling elements enables superior radial load support in a compact envelope, making these bearings ideal for applications with limited radial space.
– **Separable Design:** The separable inner and outer ring configuration allows for easy installation, removal, and maintenance—reducing downtime in industrial machinery and automotive systems.
– **Precision-Ground Components:** The inner ring raceway and rollers are precision-ground to minimize friction, vibration, and noise while ensuring smooth rotation under high-speed conditions.
– **Enhanced Lubrication Retention:** Optimal cage designs and surface treatments help maintain effective lubrication, reducing wear and extending bearing life even in harsh operating environments.
– **Interchangeability & Standardization:** Conforming to ISO and JIS standards, these bearings offer compatibility and easy replacement in existing systems.

### **Performance Advantages**
NTN’s machined ring needle roller bearings excel in applications requiring **high rigidity, space savings, and durability**. Their separable design allows for simplified assembly in complex systems, while the hardened steel construction resists deformation under heavy loads. Additionally, the low cross-sectional height makes them an excellent choice for weight-sensitive applications without sacrificing performance.

### **Typical Applications**
These bearings are widely used across industries where compact, high-load solutions are essential:

– **Automotive Systems:** Gearboxes, transmissions, differential assemblies, and steering mechanisms benefit from their high load capacity and space efficiency.
– **Industrial Machinery:** Printing presses, textile equipment, packaging machines, and robotics rely on these bearings for precision motion control.
– **Construction & Agricultural Equipment:** Excavators, hydraulic pumps, and power take-off (PTO) units utilize their durability under shock and vibration loads.
– **Precision Equipment:** Medical devices, semiconductor manufacturing tools, and aerospace actuators demand the reliability and low friction offered by NTN’s needle roller bearings.

By combining advanced materials, precision engineering, and innovative design, NTN’s separable machined ring needle roller bearings provide a dependable solution for industries that require high performance in constrained spaces. Whether in automotive drivetrains or heavy-duty industrial systems, these bearings ensure long-lasting operation with minimal maintenance.

For engineers and designers seeking a balance of compactness, load capacity, and ease of installation, NTN’s needle roller bearings stand out as a trusted choice for optimizing mechanical performance.

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Part Number d D C r Mass
NAO-7X20X12
7.000 mm
20.000 mm
12.000 mm
0.300 mm
NAO-80X110X30
80.000 mm
110.000 mm
30.000 mm
1.000 mm
NAO-85X115X30
85.000 mm
115.000 mm
30.000 mm
1.000 mm
NAO-90X120X30
90.000 mm
120.000 mm
30.000 mm
1.000 mm
NAO-9X22X12
9.000 mm
22.000 mm
12.000 mm
0.300 mm
NAO-70X100X60ZW
70.000 mm
100.000 mm
60.000 mm
1.000 mm
NAO-45X62X40ZW
45.000 mm
62.000 mm
40.000 mm
0.300 mm
NAO-70X95X30
70.000 mm
95.000 mm
30.000 mm
1.000 mm
NAO-45X72X20
45.000 mm
72.000 mm
20.000 mm
0.600 mm
NAO-70X95X56ZW
70.000 mm
95.000 mm
56.000 mm
1.000 mm
NAO-45X72X40ZW
45.000 mm
72.000 mm
40.000 mm
0.600 mm
NAO-75X105X25
75.000 mm
105.000 mm
25.000 mm
1.000 mm
NAO-50X68X20
50.000 mm
68.000 mm
20.000 mm
0.600 mm
NAO-75X105X30
75.000 mm
105.000 mm
30.000 mm
1.000 mm
NAO-50X68X40ZW
50.000 mm
68.000 mm
40.000 mm
0.600 mm
NAO-50X78X20
50.000 mm
78.000 mm
20.000 mm
1.000 mm
NAO-50X78X40ZW
50.000 mm
78.000 mm
40.000 mm
1.000 mm
NAO-55X85X30
55.000 mm
85.000 mm
30.000 mm
1.000 mm
NAO-55X85X60ZW
55.000 mm
85.000 mm
60.000 mm
1.000 mm
NAO-60X90X30
60.000 mm
90.000 mm
30.000 mm
1.000 mm