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
PK30X38X13.8X1
30.000 mm
38.000 mm
13.800 mm
0.029 kg
PK30X38X15.8X
30.000 mm
38.000 mm
15.800 mm
0.032 kg
PK30X38X17.8X1
30.000 mm
38.000 mm
17.800 mm
0.037 kg
PK31X41X21.4X
31.000 mm
41.000 mm
21.400 mm
0.057 kg
PK32X43X22.4X
32.000 mm
43.000 mm
22.400 mm
0.069 kg
PK34X42X19.8X
34.000 mm
42.000 mm
19.800 mm
0.046 kg
PK38X47X19.8X1
38.000 mm
47.000 mm
19.800 mm
0.056 kg
PK19X25X15.8X1
19.000 mm
25.000 mm
15.800 mm
0.015 kg
PK29X39X21.4X2
29.000 mm
39.000 mm
21.400 mm
0.055 kg
PK20X26X13.8X6
20.000 mm
26.000 mm
13.800 mm
0.014 kg
PK30X37X15.9X
30.000 mm
37.000 mm
15.900 mm
0.028 kg
PK22X28X15.8X1
22.000 mm
28.000 mm
15.800 mm
0.017 kg
PK22X29X17.8X7
22.000 mm
29.000 mm
17.800 mm
0.024 kg
PK22X30X14.7X2
22.000 mm
30.000 mm
14.700 mm
0.024 kg
PK22X30X17.8X2
22.000 mm
30.000 mm
17.800 mm
0.027 kg
PK24X31X16.8X7
24.000 mm
31.000 mm
16.800 mm
0.024 kg
PK24X32X19.8X6
24.000 mm
32.000 mm
19.800 mm
0.033 kg
PK26X31X13.8X31
26.000 mm
31.000 mm
13.800 mm
0.014 kg
PK26X32X13.8X
26.000 mm
32.000 mm
13.800 mm
0.018 kg
PK26X34X16.8X7
26.000 mm
34.000 mm
16.800 mm
0.032 kg