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
PCJ162112
25.400 mm
33.338 mm
19.050 mm
0.032 kg
KV50X55X20S
50.000 mm
55.000 mm
20.000 mm
0.040 kg
PCJ162116
25.400 mm
33.338 mm
25.400 mm
0.044 kg
KV50X58X57.8XZWS
50.000 mm
58.000 mm
58.000 mm
0.188 kg
PCJ182416
28.575 mm
38.100 mm
25.400 mm
0.058 kg
KV52X57X17.8XS
52.000 mm
57.000 mm
18.000 mm
0.037 kg
KV52X57X22.8X1S
52.000 mm
57.000 mm
23.000 mm
0.048 kg
KV40X46X33.8XS
40.000 mm
46.000 mm
34.000 mm
0.063 kg
KV40X48X25SV1
40.000 mm
48.000 mm
25.000 mm
0.065 kg
KV43X48X37.8XZWS
43.000 mm
48.000 mm
38.000 mm
0.058 kg
KV44X50X30.8XS
44.000 mm
50.000 mm
31.000 mm
0.067 kg
KV44X50X41.8X1ZWS
44.000 mm
50.000 mm
41.800 mm
KV45X50X25.8XS
45.000 mm
50.000 mm
25.800 mm
0.045 kg
KV14X17X10S
14.000 mm
17.000 mm
10.000 mm
0.004 kg
KV45X51X26.8XS
45.000 mm
51.000 mm
27.000 mm
0.058 kg
KV15X19X7.8XS
15.000 mm
19.000 mm
8.000 mm
0.003 kg
KV47X52X22.8XS
47.000 mm
52.000 mm
23.000 mm
0.044 kg
KV30X34X13.8XS
30.000 mm
34.000 mm
14.000 mm
0.014 kg
KV47X52X32.8XZWS
47.000 mm
52.000 mm
33.000 mm
0.064 kg
KV30X35X13S
30.000 mm
35.000 mm
13.000 mm
0.017 kg