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
K38X46X32
38.000 mm
46.000 mm
32.000 mm
0.073 kg
K42X50X20
42.000 mm
50.000 mm
20.000 mm
0.054 kg
K3X6X7
3.000 mm
6.000 mm
7.000 mm
0.000 kg
K42X54X17.8X
42.000 mm
54.000 mm
17.800 mm
K40X45X13
40.000 mm
45.000 mm
13.000 mm
0.022 kg
K40X45X13V2
40.000 mm
45.000 mm
13.000 mm
0.023 kg
K40X45X17
40.000 mm
45.000 mm
17.000 mm
0.027 kg
K40X45X21
40.000 mm
45.000 mm
21.000 mm
0.037 kg
K40X45X21V2
40.000 mm
45.000 mm
21.000 mm
0.035 kg
K40X45X27
40.000 mm
45.000 mm
27.000 mm
0.044 kg
K40X46X17
40.000 mm
46.000 mm
17.000 mm
0.030 kg
K40X47X18
40.000 mm
47.000 mm
18.000 mm
0.045 kg
K40X47X20
40.000 mm
47.000 mm
20.000 mm
0.048 kg
K40X48X20
40.000 mm
48.000 mm
20.000 mm
0.052 kg
K40X48X25
40.000 mm
48.000 mm
25.000 mm
0.065 kg
K35X40X30ZW
35.000 mm
40.000 mm
30.000 mm
0.043 kg
K38X43X17
38.000 mm
43.000 mm
17.000 mm
0.026 kg
K35X41X14
35.000 mm
41.000 mm
14.000 mm
0.026 kg
K35X41X15
35.000 mm
41.000 mm
15.000 mm
0.027 kg
K35X41X23.8X1
35.000 mm
41.000 mm
24.000 mm
0.042 kg
K35X41X40ZW
35.000 mm
41.000 mm
40.000 mm
0.055 kg
K35X42X16
35.000 mm
42.000 mm
16.000 mm
0.035 kg
K35X42X18
35.000 mm
42.000 mm
18.000 mm
0.039 kg
K35X42X20
35.000 mm
42.000 mm
20.000 mm
0.041 kg