Needle Roller and Cage Assemblies

**NTN Needle Roller Bearings & Needle Roller and Cage Assemblies: Precision Performance for Demanding Applications**

NTN is a global leader in bearing technology, renowned for its high-performance needle roller bearings and needle roller and cage assemblies. These precision-engineered components are designed to deliver exceptional load capacity, durability, and efficiency in compact spaces, making them indispensable in industrial machinery, automotive systems, and precision equipment.

### **Technical Features & Design Advantages**
NTN’s needle roller bearings and cage assemblies are optimized for applications requiring high radial load support with minimal radial cross-section. Key features include:

– **High Load Capacity:** Despite their compact design, needle rollers provide a large load-bearing surface, enabling superior radial load handling compared to conventional ball bearings.
– **Space-Saving Design:** The slim profile reduces overall assembly size, making them ideal for applications with strict space constraints.
– **Precision Cage Guidance:** High-quality cages (typically steel or polymer) ensure smooth roller movement, reducing friction and wear while maintaining proper alignment.
– **Versatile Configurations:** Available in various designs, including drawn cup, solid, and open types, with options for sealed or open variants to suit different lubrication and contamination conditions.
– **Enhanced Durability:** Advanced heat treatment and surface finishing processes extend service life, even under high-speed or heavy-load conditions.

### **Performance Advantages**
NTN’s needle roller solutions excel in demanding environments due to:

– **Reduced Friction & Heat Generation:** Optimized roller geometry and cage design minimize energy loss, improving efficiency and reducing operating temperatures.
– **High-Speed Capability:** Precision balancing and low-mass rollers allow stable performance at elevated speeds.
– **Reliability in Harsh Conditions:** Resistant to shock loads, misalignment, and contamination, ensuring consistent operation in industrial and automotive settings.

### **Typical Applications**
These bearings are widely used in:

– **Automotive Systems:** Transmission components (gearboxes, differentials), engine accessories (rocker arms, cam followers), and steering mechanisms.
– **Industrial Machinery:** Printing presses, textile equipment, agricultural machinery, and construction gear where compact, high-load solutions are critical.
– **Precision Equipment:** Robotics, medical devices, and aerospace actuators requiring lightweight, high-rigidity bearing solutions.

By combining advanced engineering with rigorous quality control, NTN’s needle roller bearings and cage assemblies provide unmatched performance, reliability, and longevity—ensuring optimal functionality in the most challenging applications. Whether enhancing automotive efficiency or supporting heavy industrial loads, NTN delivers precision you can trust.

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Part Number Fw Ew Bc Mass
K6X9X8
6.000 mm
9.000 mm
8.000 mm
0.001 kg
K6X9X8T2
6.000 mm
9.000 mm
8.000 mm
0.001 kg
K70X76X20
70.000 mm
76.000 mm
20.000 mm
0.070 kg
K70X76X30
70.000 mm
76.000 mm
30.000 mm
0.100 kg
K70X77X21
70.000 mm
77.000 mm
21.000 mm
0.080 kg
K70X78X23
70.000 mm
78.000 mm
23.000 mm
0.107 kg
K70X78X30
70.000 mm
78.000 mm
30.000 mm
0.136 kg
K60X65X26.8X
60.000 mm
65.000 mm
27.000 mm
0.067 kg
K65X70X30
65.000 mm
70.000 mm
30.000 mm
0.083 kg
K60X65X30
60.000 mm
65.000 mm
30.000 mm
0.071 kg
K60X66X19
60.000 mm
66.000 mm
19.000 mm
0.053 kg
K60X66X20
60.000 mm
66.000 mm
20.000 mm
0.056 kg
K60X66X30
60.000 mm
66.000 mm
30.000 mm
0.084 kg
K60X68X15
60.000 mm
68.000 mm
15.000 mm
0.058 kg
K60X68X20
60.000 mm
68.000 mm
20.000 mm
0.077 kg
K60X68X23
60.000 mm
68.000 mm
23.000 mm
0.092 kg
K60X68X25
60.000 mm
68.000 mm
25.000 mm
0.097 kg
K60X68X27
60.000 mm
68.000 mm
27.000 mm
0.098 kg
K60X68X30ZW
60.000 mm
68.000 mm
30.000 mm
0.119 kg
K61X66X20
61.000 mm
66.000 mm
20.000 mm
0.054 kg
K61X66X30
61.000 mm
66.000 mm
30.000 mm
0.073 kg
K5X8X10
5.000 mm
8.000 mm
10.000 mm
0.001 kg
K63X70X21
63.000 mm
70.000 mm
21.000 mm
0.075 kg
K5X8X8
5.000 mm
8.000 mm
8.000 mm
0.001 kg